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Document and Entity Information - USD ($) $ in Millions	12 Months Ended
Document and Entity Information - USD ($) $ in Millions	Dec. 31, 2018	Feb. 28, 2019	Jun. 29, 2018
Document and Entity Information
Entity Registrant Name	ATN International, Inc.
Entity Central Index Key	0000879585
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 575
Entity Common Stock, Shares Outstanding		16,003,345
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 191,836	$ 207,956
Restricted cash	1,071	833
Short-term investments	393	7,076
Accounts receivable, net of allowances of $16.5 million and $15.0 million, respectively	38,305	43,529
Inventory, materials and supplies	6,305	15,398
Prepayments and other current assets	37,855	68,136
Total current assets	275,765	342,928
Fixed Assets:
Property, plant and equipment	1,188,916	1,169,806
Less accumulated depreciation	(562,064)	(526,660)
Net fixed assets	626,852	643,146
Telecommunication licenses, net	93,686	95,952
Goodwill	63,970	63,970
Customer relationships, net	9,323	11,734
Restricted cash		11,101
Other assets	37,708	36,774
Total assets	1,107,304	1,205,605
Current Liabilities:
Current portion of long-term debt	4,688	10,919
Accounts payable and accrued liabilities	80,873	116,133
Dividends payable	2,720	2,724
Accrued taxes	31,795	6,751
Advance payments and deposits	20,574	25,178
Total current liabilities	140,650	161,705
Deferred income taxes	10,276	31,732
Other liabilities	46,760	37,072
Long-term debt, excluding current portion	86,294	144,873
Total liabilities	283,980	375,382
Commitments and contingencies (Note 14)
ATN International, Inc. Stockholders’ Equity:
Preferred stock, $0.01 par value per share; 10,000,000 shares authorized, none issued and outstanding
Common stock, $0.01 par value per share; 50,000,000 shares authorized; 17,274,215 and 17,102,530 shares issued, respectively, 16,002,699 and 16,025,745 shares outstanding respectively	172	170
Treasury stock, at cost; 1,271,516 and 1,076,785 shares, respectively	(48,547)	(36,110)
Additional paid-in capital	181,778	167,973
Retained earnings	563,593	552,948
Accumulated other comprehensive income	(1,609)	3,746
Total ATN International, Inc. stockholders’ equity	695,387	688,727
Non-controlling interests	127,937	141,496
Total equity	823,324	830,223
Total liabilities and equity	$ 1,107,304	$ 1,205,605

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
CONDENSED CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowances (in dollars)	$ 16,462	$ 15,023
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	17,274,215	17,102,530
Common stock, shares outstanding	16,002,699	16,025,745
Treasury stock, shares	1,271,516	1,076,785

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
REVENUE:
Total Revenue	$ 451,207	$ 481,193	$ 457,003
OPERATING EXPENSES (excluding depreciation and amortization unless otherwise indicated):
Termination and access fees	114,478	120,624	126,443
Engineering and operations	73,031	74,614	60,414
Sales, marketing and customer service	35,207	35,184	30,253
General and administrative	104,267	102,294	90,431
Transaction-related charges	2,642	1,009	18,064
Restructuring charges	515	1,169
Depreciation and amortization	85,719	86,934	75,980
Impairment of intangible assets			11,425
Bargain purchase gain			(7,304)
(Gain) loss on disposition of long-lived assets	(26,425)	101	27
Loss on damaged assets and other hurricane related charges, net of insurance recovery	750	3,956
Total operating expenses	390,184	425,885	405,733
Income from operations	61,023	55,308	51,270
OTHER INCOME (EXPENSE)
Interest income	1,811	1,613	1,239
Interest expense	(7,973)	(8,838)	(5,362)
Loss on deconsolidation of subsidiary		(529)
Other expenses	(1,119)	(1)	(1,773)
Other expense, net	(7,281)	(7,755)	(5,896)
INCOME BEFORE INCOME TAXES	53,742	47,553	45,374
Income tax provisions (benefit)	18,870	(1,341)	21,160
NET INCOME	34,872	48,894	24,214
Net income attributable to non-controlling interests, net of tax expense of $1.5 million, $1.0 million, and $1.3 million, respectively.	(15,057)	(17,406)	(12,113)
NET INCOME ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS	$ 19,815	$ 31,488	$ 12,101
NET INCOME PER WEIGHTED AVERAGE SHARE ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS:
Basic (in dollars per share)	$ 1.24	$ 1.95	$ 0.75
Diluted (in dollars per share)	$ 1.24	$ 1.94	$ 0.75
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	15,988	16,138	16,131
Diluted (in shares)	16,042	16,210	16,227
DIVIDENDS PER SHARE APPLICABLE TO COMMON STOCK (in dollars per share)	$ 0.68	$ 1.02	$ 1.32
Wireless
REVENUE:
Total Revenue	$ 198,824	$ 232,501	$ 244,404
Wireline
REVENUE:
Total Revenue	230,225	227,827	190,598
Renewable Energy
REVENUE:
Total Revenue	$ 22,158	$ 20,865	$ 22,001

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Noncontrolling interest income tax expense	$ 1.5	$ 1.0	$ 1.3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 5,485	$ 20,910	$ 10,780	$ (2,303)	$ 47,377	$ (20,976)	$ 10,909	$ 11,584	$ 34,872	$ 48,894	$ 24,214
Other comprehensive income:
Foreign currency translation adjustment									(4,390)	1,265	(687)
Reclassifications of gains on sale of marketable securities to net income										(1,044)
Unrealized gain on securities									78	440	868
Projected pension benefit obligation, net of tax expense of $0.6 million, $0.7 million and $0.7 million									(840)	1,357	5,251
Other comprehensive income (loss), net of tax									(5,152)	2,018	5,432
Comprehensive income									29,720	50,912	29,646
Less: Comprehensive income attributable to non-controlling interests									(15,057)	(17,406)	(12,113)
Comprehensive income attributable to ATN International, Inc.									$ 14,663	$ 33,506	$ 17,533

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Projected pension benefit obligation, tax expense (benefit)	$ 0.6	$ 0.7	$ 0.7

CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total ATNI Stockholders' Equity	Common Stock	Treasury Stock, Common, at cost	Additional Paid In Capital	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)	Non-Controlling Interests	Total
Equity, beginning of period at Dec. 31, 2015	$ 680,299	$ 168	$ (18,254)	$ 154,768	$ 547,321	$ (3,704)	$ 81,425	$ 761,724
Increase (Decrease) in Stockholders' Equity
Issuance of 100,005, 95,095 and 13,664 restricted shares of common stock for the years ended December 31,2016, 2017 and 2018, respectively	(1)			(1)				(1)
Issuance of 43,053, 35,081 and 158,021 shares of common stock upon exercise of stock options for the years ended December 31,2016 , 2017 and 2018, respectively	1,409	1		1,408				1,409
Purchase of common stock (70,686, 234,746 and 171,907 for the years ended December 31, 2016, 2017, and 2018, respectively)	(4,873)		(4,873)					(4,873)
Stock-based compensation	6,440			6,440				6,440
Dividends declared on common stock	(21,313)				(21,313)		(8,848)	(30,161)
Excess tax benefits from share-based compensation	592			592				592
Non-controlling interest in equity acquired	(4,106)			(4,106)			29,998	25,892
Investments made by minority shareholders							22,409	22,409
Deconsolidation of a subsidiary							(310)	(310)
Repurchase of non-controlling interests	1,075			1,075			(4,673)	(3,598)
Comprehensive income:
Net income	12,101				12,101		12,113	24,214
Other comprehensive loss, net of tax	5,432					5,432		5,432
Comprehensive income	17,533						12,113	29,646
Equity, end of period at Dec. 31, 2016	677,055	169	(23,127)	160,176	538,109	1,728	132,114	809,169
Increase (Decrease) in Stockholders' Equity
Issuance of 100,005, 95,095 and 13,664 restricted shares of common stock for the years ended December 31,2016, 2017 and 2018, respectively	1	1						1
Issuance of 43,053, 35,081 and 158,021 shares of common stock upon exercise of stock options for the years ended December 31,2016 , 2017 and 2018, respectively	1,156			1,156				1,156
Purchase of common stock (70,686, 234,746 and 171,907 for the years ended December 31, 2016, 2017, and 2018, respectively)	(12,983)		(12,983)					(12,983)
Stock-based compensation	6,970			6,970				6,970
Dividends declared on common stock	(16,465)				(16,465)		(7,318)	(23,783)
Investments made by minority shareholders							123	123
Deconsolidation of a subsidiary							529	529
Repurchase of non-controlling interests	(670)			(670)			(1,356)	(2,026)
Change in accounting method- adoption	155			341	(186)			155
Comprehensive income:
Net income	31,490				31,490		17,404	48,894
Other comprehensive loss, net of tax	2,018					2,018		2,018
Comprehensive income	33,508						17,404	50,912
Equity, end of period at Dec. 31, 2017	688,727	170	(36,110)	167,973	552,948	3,746	141,496	830,223
Increase (Decrease) in Stockholders' Equity
Issuance of 100,005, 95,095 and 13,664 restricted shares of common stock for the years ended December 31,2016, 2017 and 2018, respectively	2	2						2
Issuance of 43,053, 35,081 and 158,021 shares of common stock upon exercise of stock options for the years ended December 31,2016 , 2017 and 2018, respectively	6,319			6,319				6,319
Purchase of common stock (70,686, 234,746 and 171,907 for the years ended December 31, 2016, 2017, and 2018, respectively)	(12,437)		(12,437)					(12,437)
Stock-based compensation	6,420			6,420				6,420
Dividends declared on common stock	(10,863)				(10,863)		(19,033)	(29,896)
Repurchase of non-controlling interests	1,066			1,066			(10,729)	(9,663)
Change in accounting method- adoption	1,490				1,693	(203)	1,146	2,636
Comprehensive income:
Net income	19,815				19,815		15,057	34,872
Other comprehensive loss, net of tax	(5,152)					(5,152)		(5,152)
Comprehensive income	14,663						15,057	29,720
Equity, end of period at Dec. 31, 2018	$ 695,387	$ 172	$ (48,547)	$ 181,778	$ 563,593	$ (1,609)	$ 127,937	$ 823,324

CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CONSOLIDATED STATEMENTS OF EQUITY
Issuance of restricted shares of common stock	13,664	95,095	100,005
Issuance of shares of common stock upon exercise of stock options	158,021	35,081	43,053
Purchase of shares of common stock	171,907	234,746	70,686
Other comprehensive income (loss), tax	$ 637	$ 679	$ 677

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income	$ 34,872	$ 48,894	$ 24,214
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization	85,719	86,934	75,980
Provision for doubtful accounts	5,134	3,993	2,454
Amortization and write off of debt discount and debt issuance costs	763	670	505
Stock-based compensation	6,420	6,977	6,410
Unrealized loss on foreign currency	1,342	(1,209)
Deferred income taxes	(23,242)	(13,505)	(5,636)
Loss on equity method investments		2,033
Bargain purchase gain			(7,304)
Loss on damaged assets from Hurricanes		35,443
Insurance recovery related to hurricane claims		(34,606)
(Gain) loss on disposition of long-lived assets	(26,425)	101	27
Gain on sale of investments		(826)
Impairment of long-lived assets	0	0	11,425
Pension funding required by Viya acquisition			(22,494)
Loss on deconsolidation of subsidiary		529
Other non-cash activity	308	424	566
Changes in operating assets and liabilities, excluding the effects of acquisitions and dispositions:
Accounts receivable	(1,682)	(4,074)	2,601
Materials and supplies, prepayments, and other current assets	5,924	1,002	(8,410)
Prepaid income taxes	3,147	996
Accounts payable and accrued liabilities, advance payments and deposits and other current liabilities	(7,044)	4,649	6,522
Accrued taxes	29,089	(1,385)	21,547
Other assets	(238)	4,102	(12,122)
Other liabilities	1,778	4,583	15,371
Net cash provided by operating activities	115,865	145,725	111,656
Cash flows from investing activities:
Capital expenditures	(105,769)	(133,786)	(124,282)
Hurricane rebuild capital expenditures	(80,152)	(8,585)
Hurricane insurance proceeds	34,606
Receipt of government grants	5,400
Purchase of strategic investments	(3,000)	(18,107)	(2,000)
Divestiture of businesses, net of transferred cash of $11.5 million and $2.1 million, respectively	48,270	22,381
Acquisition of businesses, net of acquired cash of $0.0 million and $12.6 million, respectively		(1,183)	(146,395)
Purchases of spectrum licenses and other intangible assets, including deposits		(36,832)	(10,860)
Acquisition of non-controlling interest in subsidiary			(7,045)
Purchase of short-term investments	(138)		(7,422)
Proceeds from sale of investments	6,564	3,794
Proceeds from disposition of long-lived assets	6,900		1,424
Net cash used in investing activities	(87,319)	(172,318)	(296,580)
Cash flows from financing activities:
Dividends paid on common stock	(10,866)	(19,227)	(20,965)
Proceeds from new borrowings		8,571	125,800
Distribution to non-controlling interests	(18,780)	(6,858)	(8,632)
Payment of debt issuance costs		(326)	(2,763)
Proceeds from stock option exercises	72	1,030	649
Principal repayments of term loan	(9,795)	(9,355)	(33,564)
Repurchase of common stock	(6,198)	(12,855)	(4,114)
Acquisition of businesses, net of acquired cash of $0.0 million		(1,178)
Repurchases of non-controlling interests	(9,663)	(2,025)	(3,485)
Investments made by minority shareholders in consolidated affiliates		122	22,408
Net cash used in provided by financing activities	(55,230)	(42,101)	75,334
Effect of foreign currency exchange rates on cash and cash equivalents	(299)	226	(626)
Net change in cash, cash equivalents, and restricted cash	(26,983)	(68,468)	(110,216)
Total cash, cash equivalents, and restricted cash, beginning of period	219,890	288,358	398,574
Total cash, cash equivalents, and restricted cash, end of period	192,907	219,890	288,358
Supplemental cash flow information:
Interest paid	7,235	7,411	4,451
Taxes paid	12,486	13,685	8,237
Dividends declared, not paid	2,720	2,724	5,487
Noncash investing activity:
Transfer from inventory, materials and supplies to property, plant and equipment	6,708
Purchases of property, plant and equipment included in accounts payable and accrued expenses	$ 12,877	$ 19,466	$ 16,847

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net of transferred cash	$ 11.5	$ 2.1
Net of acquired cash, investing activities		0.0	$ 12.6
Net of acquired cash, financing activities		$ 0.0

ORGANIZATION AND BUSINESS OPERATIONS

12 Months Ended

Dec. 31, 2018

ORGANIZATION AND BUSINESS OPERATIONS

ORGANIZATION AND BUSINESS OPERATIONS

1. ORGANIZATION AND BUSINESS OPERATIONS

The Company is a holding company that, directly and through its subsidiaries, owns and operates telecommunications and renewable energy businesses in North America, India, Bermuda and the Caribbean. The Company was incorporated in Delaware in 1987, began trading publicly in 1991 and spun off more than a half of its operations to stockholders in 1998. Since that time, the Company has engaged in many strategic acquisitions and investments to help grow its operations, using the cash generated from its established operating units to re-invest in its existing businesses and to make strategic investments in earlier stage businesses. The Company looks for businesses that offer growth opportunities or potential strategic benefits, but that required additional capital investment in order to execute on their business plans. The Company holds controlling positions with respect to some of its investments and minority positions in others. These strategic investments frequently offer a product and service development component in addition to the prospects of generating returns on invested capital. The Company has identified three operating segments to manage and review its operations, and to facilitate investor presentations of its results, as follows:

U.S. Telecom In the United States, the Company offers wireless and wireline services. The Company offers wholesale wireless voice and data roaming services to national, regional, local and selected international wireless carriers in rural markets located principally in the Southwest and Midwest United States. The Company also provides retail wireless, wireline services and wholesale long-distance voice services to telecommunications carriers in the areas in which it offers wireline services.

International Telecom. The Company’s international wireless services include voice and data services to retail customers in Bermuda, Guyana and the U.S. Virgin Islands. The Company’s international wireline services include voice and data services in Bermuda, the Cayman Islands, Guyana and the U.S. Virgin Islands, as well as video services in Bermuda, the Cayman Islands, and the U.S Virgin Islands. In addition, the Company offers wholesale long‑distance voice services to other telecommunications carriers in the countries in which it offers international wireline services.

Renewable Energy. In India, the Company provides distributed generation solar power to corporate, utility and municipal customers. Through November 6, 2018, the Company also provided distributed generation solar power in the United States in Massachusetts, California and New Jersey.

The following chart summarizes the operating activities of the Company’s principal subsidiaries, the segments in which it reports its revenue and the markets it served as of December 31, 2018:


Segment	Services	Markets	Tradenames
U.S. Telecom	Wireless	United States (rural markets)	Choice, Choice NTUA Wireless, Commnet, WestNet, Geoverse
	Wireline	United States	Essextel, Deploycom
International Telecom	Wireline	Bermuda, Cayman Islands, Guyana, U.S. Virgin Islands	Fireminds, GTT+, One, Logic, Viya
	Wireless	Bermuda, Guyana, U.S. Virgin Islands	GTT+, One, Viya
	Video Services	Bermuda, Cayman Islands, U.S. Virgin Islands	Logic, One, Viya
Renewable Energy	Solar	India	Vibrant Energy

The Company actively evaluates potential acquisitions, investment opportunities and other strategic transactions, both domestic and international, that meet its return on investment and other criteria. In addition, the Company considers non-controlling investments in earlier stage businesses that it considers strategically relevant, and which may offer long-term growth potential for the Company, either individually, or as research and development businesses that can support the Company’s operating subsidiaries in new product and service development and offerings. The Company provides management, technical, financial, regulatory, and marketing services to its subsidiaries and typically receives a management fee equal to a percentage of their revenues, which is eliminated in consolidation. For information about the Company’s financial segments and geographical information about its operating revenues and assets see Notes 1 and 17 to the Consolidated Financial Statements included in this Report.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

12 Months Ended

Dec. 31, 2018

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The consolidated financial statements include the accounts of the Company, its majority-owned subsidiaries and certain entities, which are consolidated in accordance with the provisions of the Financial Accounting Standards Board’s (“FASB”) authoritative guidance on the consolidation of variable interest entities since it is determined that the Company is the primary beneficiary of these entities.

Certain reclassifications have been made in the December 31, 2016 financial statements to conform to the Company’s consolidated income statements to how it analyzes its operations in the current period. These changes did not impact operating income. For the year ended December 31, 2016 the aggregate impact of the changes included a decrease to termination and access fees of $4.9 million, an increase to engineering and operations expenses of $7.5 million, a decrease to sales and marketing expenses of $0.8 million, an increase to equipment expense of $0.6 million and a decrease to general and administrative expenses of $2.4 million.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenue and expenses during the reporting periods. The most significant estimates relate to the allowance for doubtful accounts, useful lives of the Company’s fixed and finite-lived intangible assets, allocation of purchase price to assets acquired and liabilities assumed in business combinations, fair value of indefinite-lived intangible assets, goodwill and income taxes. Actual results could differ significantly from those estimates.

Cash and Cash Equivalents

The Company considers all investments with an original maturity of three months or less at date of purchase to be cash equivalents. The Company places its cash and temporary investments with banks and other institutions that it believes have a high credit quality. At December 31, 2018, the Company had deposits with banks in excess of FDIC insured limits and $25.2 million of its cash is on deposit with noninsured institutions such as corporate money market issuers and cash held in foreign banks. The Company’s cash and cash equivalents are not subject to any restrictions (see Note 9). As of December 31, 2018 and 2017, the Company held $7.5 million and $12.6 million, respectively, of its cash in Guyana dollars. While there are risks associated with the conversion of Guyana dollars to U.S. dollars due to limited liquidity in the Guyana foreign currency markets, to date it has not prevented the Company from converting Guyana dollars into U.S. dollars within a given three month period or from converting at a price that reasonably approximates the reported exchange rate.

Short Term Investments

The Company's short-term investments consist of corporate bonds, which have remaining maturities of more than three months at the date of purchase, and equity securities classified as available for sale, which are stated at fair value. Unrealized gains and losses are recorded in other income. The estimated fair values of investments are based on quoted market prices as of the end of the reporting period.

Restricted Cash

The Company generally classifies cash that is legally restricted as to withdrawal or usage as restricted cash. Generally, the cash is restricted due to debt service obligations, acquisitions, or to support the Company’s telecommunications operations. In 2018, the Company disposed of $8.4 million of restricted cash as a result of the U.S. Solar Transaction described in Note 4.

Allowance for Doubtful Accounts

The Company maintains an allowance for doubtful accounts for the estimated probable losses on uncollectible accounts receivable. The allowance is based upon a number of factors including the credit worthiness of customers, the Company’s historical experience with customers, the age of the receivable and current market and economic conditions. Such factors are reviewed and updated by the Company on a quarterly basis. Uncollectible amounts are charged against the allowance account.

Inventory, Materials and Supplies

Inventory, materials and supplies primarily include handsets and other equipment held for sale to customers. These balances are recorded at the lower of cost or market cost being determined on the basis of specific identification and market determined using replacement.

Fixed Assets

The Company’s fixed assets are recorded at cost and depreciated using the straight‑line method generally between 3 and 39 years. Expenditures for major renewals and betterments that extend the useful lives of fixed assets are capitalized. Repairs and replacements of minor items of property are charged to maintenance expense as incurred. The cost of fixed assets in service and under construction includes an allocation of indirect costs applicable to construction. Grants received for the construction of assets are recognized as a reduction of the cost of fixed assets, a reduction of depreciation expense over the useful lives of the assets and as a reduction of capital expenditures in the statements of cash flows.

The fair value of a liability for an asset retirement obligation is recorded in the period in which it is incurred if a reasonable estimate of fair value can be made. In periods subsequent to initial measurement, period‑to‑period changes in the liability for an asset retirement obligation resulting from the passage of time and revisions to either the timing or the amount of the original estimate of undiscounted cash flows are recognized. The increase in the carrying value of the associated long‑lived asset is depreciated over the corresponding estimated economic life. The consolidated balance sheets include accruals of $3.8 million and $3.9 million as of December 31, 2018 and 2017, respectively, for estimated costs associated with asset retirement obligations.

In accordance with the authoritative guidance for the accounting for the impairment or disposal of long‑lived assets, the Company evaluates the carrying value of long‑lived assets, including property and equipment, in relation to the operating performance and future undiscounted cash flows of the underlying business whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. An impairment loss exists when estimated undiscounted cash flows attributable to an asset are less than its carrying amount. If an asset is deemed to be impaired, the amount of the impairment loss recognized represents the excess of the asset’s carrying value as compared to its estimated fair value, based on management’s assumptions and projections.

Management’s estimate of the future cash flows attributable to its long‑lived assets and the fair value of its businesses involve significant uncertainty. Those estimates are based on management’s assumptions of future results, growth trends and industry conditions. If those estimates are not met, the Company could have additional impairment charges in the future, and the amounts may be material.

The Company did not record any fixed asset impairments for the year ended December 31, 2018. See Note 3, Impact of Hurricanes Irma and Maria, regarding the Company’s write off of certain damaged fixed assets. See Note 4, Disposition- U.S. Telecom, regarding the Company’s impairment of certain fixed assets in the year ended December 31, 2016.

Goodwill and Indefinite‑Lived Intangible Assets

Goodwill is recognized in business combinations equal to the amount by which the cost of acquired net assets exceeded the fair value of those net assets on the date of acquisition. The Company allocates goodwill to reporting units at the time of acquisition and bases that allocation on which reporting units will benefit from the acquired assets and liabilities. Reporting units are defined as operating segments or one level below an operating segment, referred to as a component. The Company has determined that its reporting units are components of its multiple operating segments. The Company assesses goodwill for impairment on an annual basis in the fourth quarter or more frequently when events and circumstances occur indicating that the recorded goodwill may be impaired. The assessment begins with a qualitative analysis to determine whether it is more likely than not that the fair value of the reporting unit is less than its carrying amount. If the reporting unit passes this analysis, the impairment assessment is complete and no impairment is recorded. If the reporting unit does not pass the analysis, the Company performs additional quantitative analysis by calculating the fair value of the reporting unit. If the fair value exceeds the carrying value, the test is complete and no impairment is recorded. If the carrying value of the reporting unit, including goodwill, exceeds the fair value of the reporting unit an impairment charge is recorded equal to the excess, but not more than the total amount of goodwill allocated to the reporting unit.

A significant majority of the Company’s telecommunications licenses are not amortized and are carried at their historical costs. The Company believes that telecommunications licenses generally have an indefinite life based on the historical ability to renew such licenses, that such renewals may be obtained indefinitely and at little cost, and that the related technology used is not expected to be replaced in the foreseeable future. The Company has elected to perform its annual testing of its telecommunications licenses in the fourth quarter of each fiscal year, or more often if events or circumstances indicate that there may be impairment. If the value of these assets were impaired by some factor, such as an adverse change in the subsidiary’s operating market, the Company may be required to record an impairment charge. The impairment test consists of a comparison of the fair value of telecommunications licenses with their carrying amount on a license by license basis and as a part of the test the Company assesses the appropriateness of the application of the indefinite‑lived assertion.

As of December 31, 2018 and 2017, the Company performed its annual impairment assessment of its goodwill and indefinite‑lived intangible assets (telecommunications licenses) and determined that no impairment charge was required. See Note 8 for a discussion of the Company’s quantitative and qualitative tests of its goodwill. Also, see Note 4, Disposition- U.S. Telecom, regarding the Company’s impairment of goodwill in the year ended December 31, 2016.

Other Intangible Assets

Intangible assets resulting from the acquisitions of entities accounted for using the purchase method of accounting are estimated by management based on the fair value of assets acquired. These include acquired customer relationships, tradenames, and franchise rights.

Customer relationships are amortized over their estimated lives ranging from 7-13 years, which are based on the pattern in which economic benefit of the customer relationship is estimated to be realized.

Debt

Debt is measured at amortized cost. Debt issuance costs on term loans and specified maturity borrowings are recorded as a reduction to the carrying value of the debt and are amortized as interest expense in the consolidated income statements over the period of the debt. Fees related to revolving credit facilities and lines of credit are recorded in other assets in the consolidated balance sheet and are amortized as interest expense in the consolidated income statements over the life of the facility. Except for interest costs incurred for the construction of a qualifying asset which are capitalized during the period the assets are prepared for their intended use, interest costs are expensed.

Non‑Controlling Interests

The non‑controlling interests in the accompanying consolidated balance sheets reflect the original investments and subsequent capital contributions made by the minority stockholders in the Company’s subsidiaries which are less than wholly-owned. Non-controlling interests acquired in a business combination are initially recorded at fair value. Subsequently, all non-controlling interest is adjusted for the minority stockholder’s proportional share of the earnings or losses, net of any distributions.

Changes in Accumulated Other Comprehensive Income (Loss)

Changes in accumulated other comprehensive income (loss), by component, were as follows (in thousands):


	Projected
	Pension
	Benefit		Translation
	Obligation		Adjustment		Other		Total

Balance at December 31, 2015	$	(3,481)	$	(223)	$	—	$	(3,704)
Adjust funded status of pension plan, net of tax of $0.7 million		5,251		—		—		5,251
Foreign currency translation adjustment		—		(687)		—		(687)
Unrealized gain on marketable securities		—		—		868		868
Balance at December 31, 2016		1,770		(910)		868		1,728
Adjust funded status of pension plan, net of tax of $0.7 million		1,357		—		—		1,357
Foreign currency translation adjustment		—		1,265		—		1,265
Reclassifications of gains on sale of marketable securities to net income		—		—		(1,044)		(1,044)
Unrealized gain on marketable securities		—		—		440		440
Balance at December 31, 2017		3,127		355		264		3,746
Adjust funded status of pension plan, net of tax of $0.6 million		(840)		—		—		(840)
Foreign currency translation adjustment		—		(4,390)		—		(4,390)
Adoption of ASU 2016-01		—		—		(203)		(203)
Interest rate swap		—		—		78		78
Balance at December 31, 2018	$	2,287	$	(4,035)	$	139	$	(1,609)

Amounts reclassified from accumulated other comprehensive income to net income were as follows (in thousands):


		2018		2017		2016
Pension and other postretirement benefit plans	$	54	$	716	$	1,300
Realized gains on marketable securities		—		(1,044)		—
Total	$	54	$	(328)	$	1,300

Revenue Recognition

The Company earns revenue from its telecommunication and renewable energy operations. The Company recognizes revenue through the following steps:

Identification of the contract with a customer

Identification of the performance obligations in the contract

Determination of the transaction price

Allocation of the transaction price to the performance obligations in the contract

Recognize revenue when, or as, the Company satisfies performance obligations

Revenue Recognition- Telecommunications

Wireless revenue consists of wholesale and retail revenue. Wholesale revenue is generated from providing mobile voice and data services to the customers of other wireless carriers, the provision of network switching services and certain transport services using the Company’s wireless networks. The transaction price of some wholesale revenue contracts includes variable consideration in the form of volume discounts. Management uses its judgment based on projected transaction volumes to estimate the transaction price and to allocate the transaction price to the performance obligations in the contract. Revenue is recognized over time as the service is rendered to the customer. Retail revenue is generated from providing mobile voice and data services to subscribers as well as roaming services provided to other carriers’ customers roaming into the Company’s retail markets. This revenue is recognized over time as the service is rendered. Lastly, wireless revenue includes revenues from equipment sold to customers which is recognized when the equipment is delivered to the customer.

Management considers transactions where customers purchase subsidized or discounted equipment and mobile voice or data services to be a single contract. For these contracts, the transaction price is allocated to the equipment and mobile service based on their standalone selling prices. The standalone selling price is based on the amount the Company charges for the equipment and service to similar customers. Equipment revenue is recognized when the equipment is delivered to customers and service revenue is recognized as service is rendered.

Wireline revenue is generated from access and usage fees for internet, voice and video services charged to subscribers as well as wholesale long-distance voice services provided to telecommunication carriers at contracted rates. Revenue from these contracts is recognized over time as the service is rendered to the customer.

The Company’s wireless and wireline contracts occasionally include promotional discounts such as free service periods or discounted products. If a contract contains a substantive termination penalty, the transaction price is allocated to the performance obligations based on standalone selling price resulting in accelerated revenue recognition and the establishment of a contract asset that will be recognized over the life of the contract. If a contract includes a promotional discount but no substantive termination penalty the discount is recorded in the promotional period and no contract asset is established. The Company’s customers also have the option to purchase additional telecommunication services. Generally, these options are not performance obligations and are excluded from the transaction price because they do not provide the customers with a material right.

The Company may charge upfront fees for activation and installation of some of its products and services. These fees are reviewed to determine if they represent a separate performance obligation. If they are not a separate performance obligation, the contract price associated with them is recognized over the life of the customer. If the fees represent a performance obligation they are recognized when delivered to the customer based on standalone selling price.

Sales and use and state excise taxes collected from customers that are remitted to the governmental authorities are reported on a net basis and excluded from the revenues and sales.

Revenue Recognition-Renewable Energy

Revenue from the Company’s Renewable Energy segment is generated from the sale of electricity through power purchase agreements (“PPAs”) with various customers that generally range from 10 to 25 years. The Company recognizes revenue at contractual PPA rates over time as electricity is generated and simultaneously consumed by the customer. In the United States, the Company’s Renewable Energy segment also generates revenue from the sale of Solar Renewable Energy Credits (“SRECs”). Revenue is recognized over time as SRECs are sold through long-term purchase agreements at the contractual rate specified in the agreement.

Contract Acquisition Costs

The Company pays sales commissions to its employees and agents for obtaining customer contracts. These costs are incremental because they would not have been incurred if the contract was not obtained. The Company recognizes an asset for these costs and subsequently amortizes the asset on a systematic basis consistent with the pattern of the transfer of the services to the customer. The amortization period, which is between 2 and 6 years, considers both the original contract period as well as anticipated contract renewals as appropriate. The amortization period also includes renewal commissions when those commissions are not commensurate with new commissions. The Company estimates contract renewals based on its actual renewals in recent periods. When the expected amortization period is one year or less the Company utilizes the practical expedient and expenses the costs as incurred.

Operating Expenses

Termination and access fee expenses. Termination and access fee expenses are charges that are incurred for voice and data transport circuits (in particular, the circuits between the Company’s wireless sites and its switches), internet capacity, video programming costs, other access fees the Company pays to terminate its calls, telecommunication spectrum fees and direct costs associated with the Company’s managed services and technology business as well as within its Renewable Energy segment. Termination and access fees also include the cost of handsets and customer resale equipment incurred by the Company’s retail businesses.

Engineering and operations expenses. Engineering and operations expenses include the expenses associated with developing, operating and supporting the Company’s expanding telecommunications networks and renewable energy operations, including the salaries and benefits paid to employees directly involved in the development and operation of the Company’s networks and renewable energy operations.

Sales and marketing expenses. Sales and marketing expenses include salaries and benefits the Company pays to sales personnel, customer service expenses, sales commissions and the costs associated with the development and implementation of the Company’s promotion and marketing campaigns.

General and administrative expenses. General and administrative expenses include salaries, benefits and related costs for general corporate functions including executive management, finance and administration, legal and regulatory, facilities, information technology and human resources. General and administrative expenses also include internal costs associated with the Company’s performance of due-diligence in connection with acquisition activities.

Transaction-related charges. Transaction-related charges include the external costs, such as legal, tax, accounting and consulting fees directly associated with acquisition and disposition-related activities, which are expensed as incurred. Transaction-related charges do not include internal costs, such as employee salary and travel-related expenses, incurred in connection with acquisitions or dispositions or any integration-related costs.

Restructuring charges. Restructuring charges are costs incurred as a result of reorganizing the Company’s operating from acquisition or disposition activities.

Depreciation and amortization expenses. Depreciation and amortization expenses represent the depreciation and amortization charges the Company records on its property and equipment and on certain intangible assets.

Impairment of intangible assets. The Company evaluates the carrying value of its long lived assets, including property and equipment, whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. An impairment loss exists when estimated undiscounted cash flows attributable to non-current assets subject to depreciation and amortization and discounted cash flows for intangible assets not subject to amortization are less than their carrying amount. For long lived assets other than goodwill, if an asset is deemed to be impaired, the amount of the impairment loss recognized represents the excess of the asset’s carrying value as compared to its estimated fair value, based on management’s assumptions and projections.

The Company also assesses the carrying value of goodwill and indefinite‑lived intangible assets on an annual basis or more frequently if events or changes in circumstances indicate that the carrying value of goodwill may not be recoverable. The carrying value of each reporting unit, including goodwill assigned to that reporting unit, is compared to its fair value. If the carrying value of the reporting unit, including goodwill, exceeds the fair value of the reporting unit an impairment charge is recorded equal to the excess, but not more than the total amount of goodwill allocated to the reporting unit.

(Gain) loss on disposition of long-lived assets. The Company sells or disposes assets from time to time. A gain or loss is recorded by comparing the carrying amount of the assets to the proceeds received.

Loss on damaged assets and other Hurricane-related charges, net of insurance recovery. During September 2017, the Company’s operations and customers in the U.S. Virgin Islands were severely impacted by Hurricanes Irma and Maria (the “Hurricanes”). Loss on damaged assets and other hurricane related charges, net of insurance recovery represents the write off of damaged assets, net of insurance recoveries and also includes additional operating expenses that were specifically incurred to address the impact of the Hurricanes.

Accounting for Grants

The Company receives funding from the U.S. Government and its agencies under Stimulus and Universal Service Fund and other programs. These funding programs are generally designed to fund telecommunications operations, and infrastructure expansion into rural or underserved areas. The funding programs are evaluated to determine if they represent funding related to revenue, capital expenditures, or operating activities. Funding for revenue and operating activities are recorded as revenue or contra expense in the Company’s consolidated income statement as the services are provided. Funding for capital expenditures is recorded as a reduction to property, plant and equipment on the Company’s consolidated balance sheets and a future reduction in depreciation expense in the consolidated income statements. Government funding related to revenue and operations are recorded as operating cash inflows and grants for capital expenditures are recorded as investing cash inflows.

The Company monitors government funding for grant requirements to ensure that conditions related to grants have been met and there is reasonable assurance that the Company will be able to retain the grant proceeds and to ensure that any contingencies that may arise from not meeting the conditions are appropriately recognized. See Note 10, Government Grants.

Income Taxes

The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined on the basis of the differences between the financial statement and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date.

The Company recognizes deferred tax assets to the extent that the Company believes these assets are more likely than not to be realized. In making such a determination, the Company considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax‑planning strategies, and results of recent operations. If the Company determines that it would be able to realize its deferred tax assets in the future in excess of their net recorded amount, the Company would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes.

The Company records uncertain tax positions in accordance with ASC 740 on the basis of a two-step process whereby (1) the Company determines whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (2) for those tax positions that meet the more‑likely‑than-not recognition threshold, the Company recognizes the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related authority. It is possible that the ultimate resolution of these uncertain matters may be greater or less than the amount that the Company estimated. If payment of these amounts proves to be unnecessary, the reversal of the liabilities would result in tax benefits being recognized in the period in which it is determined that the liabilities are no longer necessary. If the estimate of tax liabilities proves to be more than the ultimate assessment, a further charge to expense would result.

The Company recognizes interest and penalties related to unrecognized tax benefits within the income tax expense line in the accompanying consolidated statements of operations. Accrued interest and penalties are included within the related tax liability line in the consolidated balance sheets.

The Company does not provide for United States income taxes on earnings of foreign subsidiaries as such earnings are considered to be indefinitely reinvested. The Tax Cuts and Jobs Act of 2017 resulted in a one-time transition tax on the deemed repatriation of foreign earnings for federal tax purposes.

Credit Concentrations and Significant Customers

Historically, the Company has been dependent on a limited amount of customers for its wholesale roaming business. For the year ended December 31, 2018, one customer accounted for 11% of the Company’s consolidated revenue. For the years ended December 31, 2017, two customers accounted for 13% and 10% of the Company’s consolidated revenue. For the year ended December 31, 2016, two customers accounted for 14% and 12% of the Company’s consolidated revenue.

As of December 31, 2018, no customer accounted for more than 10% of the Company’s consolidated accounts receivable. As of December 31, 2017, one customer accounted for 18% of the Company’s consolidated accounts receivable, net of allowances.

Foreign Currency Gains and Losses

The Company translate the assets and liabilities of its foreign subsidiaries from their respective functional currencies, primarily the Indian Rupee and the Guyana Dollar, to U.S. dollars at the appropriate spot rates as of the balance sheet date. Changes in the carrying value of these assets and liabilities attributable to fluctuations in spot rates are recognized in foreign currency translation adjustment, a component of accumulated other comprehensive income. Income statement accounts are translated using the monthly average exchange rates during the year.

Monetary assets and liabilities denominated in a currency that is different from a reporting entity’s functional currency must first be remeasured from the applicable currency to the legal entity’s functional currency. The effect of this remeasurement process is reported in other income on the income statement.

Employee Benefit Plans

The Company sponsors pension and other postretirement benefit plans for employees of certain subsidiaries. Net periodic pension expense is recognized in the Company’s income statement. The service cost component of net periodic pension expense is presented with other employee compensation within income from operations. Other components of net periodic pension expense, such as interest cost, expected return on plan assets, and amortization of actuarial gains and losses are presented in other income. The Company recognizes a pension or other postretirement benefit plan’s funded status as either an asset or liability in its consolidated balance sheet. Actuarial gains and losses are deferred, reported as a component of other comprehensive income, and amortized through net periodic pension expense in subsequent periods.

Fair Value of Financial Instruments

In accordance with the provisions of fair value accounting, a fair value measurement assumes that a transaction to sell an asset or transfer a liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability and defines fair value based upon an exit price model.

The fair value measurement guidance establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The guidance describes three levels of inputs that may be used to measure fair value:


Level 1	Quoted prices in active markets for identical assets or liabilities as of the reporting date. Active markets are those in which transactions for the asset and liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis. Level 1 assets and liabilities include money market funds, debt and equity securities and derivative contracts that are traded in an active exchange market.
Level 2	Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 2 assets and liabilities include debt securities with quoted prices that are traded less frequently than exchange‑traded instruments and derivative contracts whose value is determined using a pricing model with inputs that are observable in the market or can be derived principally from or corroborated by observable market data. This category generally includes corporate obligations and non‑exchange traded derivative contracts.
Level 3	Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments and intangible assets that have been impaired whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation.

Assets and liabilities of the Company measured at fair value on a recurring basis as of December 31, 2018 and 2017 are summarized as follows:


			December 31, 2018
			Significant Other
	Quoted Prices in		Observable
	Active Markets		Inputs
Description	(Level 1)		(Level 2)		Total
Certificates of deposit	$	—	$	380	$	380
Money market funds		2,266		—		2,266
Short term investments		393		—		393
Commercial paper		—		13,972		13,972
Interest rate swap		—		140		140
Total assets and liabilities measured at fair value	$	2,659	$	14,492	$	17,151


	December 31, 2017
			Significant Other
	Quoted Prices in		Observable
	Active Markets		Inputs
Description	(Level 1)		(Level 2)		Total
Certificates of deposit	$	—	$	391	$	391
Money market funds		2,894		—		2,894
Short term investments		555		6,521		7,076
Commercial paper		—		49,954		49,954
Interest rate swap		—		52		52
Total assets and liabilities measured at fair value	$	3,449	$	56,918	$	60,367

Certificate of Deposit

As of December 31, 2018 and December 31, 2017 this asset class consisted of a time deposit at a financial institution denominated in U.S. dollars. The asset class is classified within Level 2 of the fair value hierarchy because the fair value was based on observable market data.

Money Market Funds

As of December 31, 2018 and December 31, 2017, this asset class consisted of a money market portfolio that comprises Federal government and U.S. Treasury securities. The asset class is classified within Level 1 of the fair value hierarchy because its underlying investments are valued using quoted market prices in active markets for identical assets.

Short Term Investments and Commercial Paper

As of December 31, 2018 and December 31, 2017, these asset classes consisted of short term foreign and U.S. corporate bonds, equity securities, and commercial paper. Corporate bonds and commercial paper are classified within Level 2 of the fair value hierarchy because the fair value is based on observable market data. Equity securities are classified within Level 1 because fair value is based on quoted market prices in active markets for identical assets. The Company held equity securities with a fair value of $0.3 million and $0.6 million at December 31, 2018 and December 31, 2017, respectively. Net income for the year ended December 31, 2018 includes $0.3 million of losses on these securities.

Other Fair Value Disclosures

The carrying amounts of cash and cash equivalents, accounts receivable, and accounts payable and accrued expenses approximate their fair values because of the relatively short-term maturities of these financial instruments. The fair value of the interest rate swap is measured using Level 2 inputs.

At December 31, 2018, the Company holds $23.1 million of equity securities consisting of non-controlling investments in privately held companies. These investments, over which the Company does not have the ability to exercise significant influence, are without readily determinable fair values. The investments are measured at cost, less any impairment, adjusted for observable price changes of similar investments of the same issuer. Fair value is not estimated for these investments if there are no identified events or changes in circumstances that may have an effect on the fair value of the investment. The carrying value of the strategic investments was $23.1 million and $20.1 million at December 31, 2018 and December 31, 2017, respectively. As of December 31, 2018 no impairments or price adjustments were recorded on the investments. Strategic investments are included with other assets on the consolidated balance sheets.

The fair value of long-term debt is estimated using Level 2 inputs. At December 31, 2018, the fair value of long-term debt, including the current portion, was $91.6 million and its book value was $91.0 million. At December 31, 2017, the fair value of long-term debt, including the current portion, was $159.2 million and its book value was $155.8 million.

Net Income Per Share

Basic net income per share is computed by dividing net income attributable to the Company’s stockholders by the weighted‑average number of common shares outstanding during the period and does not include any other potentially dilutive securities. Diluted net income per share gives effect to all potentially dilutive securities using the treasury stock method.

The reconciliation from basic to diluted weighted average shares of Common Stock outstanding is as follows (in thousands):


	Year ended December 31,
	2018	2017	2015
Basic weighted-average shares of common stock outstanding	15,988	16,138	16,131
Stock options	54	72	96
Diluted weighted-average shares of common stock outstanding	16,042	16,210	16,227

The following notes the number of potential shares of common stock not included in the above calculation because the effects of such were anti‑dilutive (in thousands of shares):


	For the Year Ended
	December 31,
	2018	2017	2016
Stock options	5	7	5
Total	5	7	5

Stock‑Based Compensation

The Company applies the fair value recognition provisions of the authoritative guidance for the accounting for stock‑based compensation and is expensing the fair value of the grants of options to purchase common stock over their vesting period of four years. Relating to grants of options, the Company recognized $0.1 million, $0.1 million and $0.1 million of non‑cash, share‑based compensation expense during 2018, 2017, and 2016, respectively. See Note 11 for assumptions used to calculate the fair value of the options granted.

The Company also issued 111,474 restricted shares of common stock in 2018; 95,095 restricted shares of common stock in 2017 and 100,005 restricted shares of common stock in 2016. These shares are being charged to income based upon their fair values over their vesting period of four years. The Company accounts for forfeitures as they occur. Non‑cash equity‑based compensation expense, related to the vesting of restricted shares issued was $6.1 million, $6.6 million and $6.2 million in 2018, 2017, and 2016, respectively.

In connection with certain acquisitions, the Company issued shares of the acquired company to its local management and recorded $0.2 million, $0.3 million, and $0.1 million of stock based compensation during 2018, 2017 and 2016, respectively.

Stock‑based compensation expense is recognized within general and administrative expenses within the consolidated income statements.

Business Combinations

The Company accounts for business combinations using the acquisition method of accounting, under which the purchase price of the acquisition is allocated to the assets acquired and liabilities assumed using the fair values determined by management as of the acquisition date. Contingent consideration obligations that are elements of the consideration transferred are recognized as of the acquisition date as part of the fair value transferred in exchange for the acquired business. Acquisition-related costs incurred in connection with a business combination are expensed as incurred.

Recent Accounting Pronouncements

In May 2014, the FASB issued Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”), and subsequently issued related updates, (collectively known as ASC 606), which provides a single, comprehensive revenue recognition model for all contracts with customers. The revenue standard is based on the principle that revenue should be recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The Company adopted this standard on January 1, 2018. Refer to Note 3 to the Consolidated Financial Statements in this Report.

In April 2015, the FASB issued ASU 2015-05, “Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement”, which provides guidance about whether a cloud computing arrangement includes software and how to account for the license for software. The new guidance does not change the accounting for a customer’s accounting for service contracts. The adoption of ASU 2015-05 by the Company on January 1, 2017 did not have a material impact on the Company’s financial position, result of operations or cash flows.

In January 2016, the FASB issued ASU 2016-01, “Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities” (“ASU 2016-01”), which addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. The Company adopted this standard on January 1, 2018. Upon adoption the Company held $20.1 million of equity investments that did not have readily determinable fair values. As a result these investments are measured at cost less impairments, adjusted for observable price changes of similar investments of the same issuer. The Company has not adjusted the cost of these investments since acquisition. Upon adoption, the Company held $0.6 million of equity investments with readily determinable fair values and reclassified $0.2 million of unrealized gains on this investment to retained earnings.

In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)” and subsequently issued related updates (“ASU 2016-02”), which provide comprehensive lease accounting guidance. The standard requires entities to recognize lease assets and liabilities on the balance sheet as well as disclosure of key information about leasing arrangements. ASU 2016-02 will become effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, with early adoption permitted. The Company has implemented new systems, processes and controls to implement the guidance. The Company will adopt the standard on January 1, 2019 by applying the new lease requirements at the effective date and will recognize a cumulative-effect adjustment to the opening balance sheet retained earnings in the period of adoption with no adjustments to prior periods. The Company expects to adopt the package of practical expedients which allows it to not reassess: i) whether an arrangement contains a lease, ii) operating and capital lease classifications; and iii) previously recorded initial direct costs. The adoption will result in right to use assets and liabilities being recorded on the Company’s balance sheet. The Company is finalizing quantitative information related to the impact of the guidance including the incremental borrowing rates for classes of leases. The right of use asset and liability balances recorded will be material to the Company’s financial statements.

In March 2016, the FASB issued ASU 2016-09, “Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting”. The standard is intended to simplify several areas of accounting for share-based compensation arrangements, including the income tax impact, classification on the statement of cash flows and forfeitures. The Company adopted ASU 2016-09 on January 1, 2017. The guidance requires the recognition of the income tax effects of awards in the income statement when the awards vest or are settled, thus eliminating additional paid-in capital pools. This had no impact on the Company’s historical results. Also as a result of the adoption, the Company changed its policy election to account for forfeitures as they occur rather than on an estimated basis. The change resulted in the Company reclassifying $0.3 million from additional paid-in capital to retained earnings for the net cumulative-effect adjustment in stock compensation expense related to prior periods.

In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments” (“ASU 2016-15”), which provides further clarification on eight cash flow classification issues. The Company adopted this standard on January 1, 2018. In November 2016, the FASB issued ASU 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash,” (“ASU 2016-18”). The amendments in ASU 2016-18 are intended to reduce diversity in practice related to the classification and presentation of changes in restricted cash or restricted cash equivalents on the statement of cash flows. The amendments in ASU 2016-18 require that amounts generally described as restricted cash and restricted cash equivalents be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The Company adopted this standard on January 1, 2018.

The Company’s statement of cash flows reports the cash effects during a period of an entity’s operations, its investing transactions, and its financing transactions. The statement of cash flows explains the change during the period in the total cash which includes cash equivalents as well as restricted cash. The Company applies the predominance principle to classify separately identifiable cash flows based on the nature of the underlying cash flows. Debt prepayment or extinguishment costs are classified as cash outflows from financing activities. Contingent consideration payments made three months or less after a business combination are classified as investing activities and those made after that time are classified as financing activities. Proceeds from the settlement of insurance claims are classified on the basis of the nature of the loss. Prior to January 1, 2018, the Company classified all payments made in a business combination as investing activities and did not include restricted cash in total cash. The adoption of ASU 2016-15 and ASU 2016-18 impacted the Company’s cash flows for the years ended December 31, 2017 and December 31, 2016 as indicated below (amounts in thousands):


		Statement of Cash flows

		Year ended December 31, 2017						Year ended December 31, 2016
		Reported		Change		Under previous guidance		Reported		Change		Under previous guidance
Net cash provided by operating activities	$	145,725	$	—	$	145,725	$	111,656	$	—	$	111,656
Net cash used in investing activities		(172,318)		5,525		(166,793)		(296,580)		(12,108)		(308,688)
Net cash used in financing activities		(42,101)		1,178		(40,923)		75,334		—		75,334
Effect of foreign currency exchange rates on total cash		226		—		226		(626)		—		(626)
Net change in total cash	$	(68,468)	$	6,703	$	(61,765)	$	(110,216)	$	(12,108)	$	(122,324)
Total cash, beginning of period		288,358		(18,637)		269,721		398,574		(6,529)		392,045
Total cash, end of period	$	219,890	$	(11,934)	$	207,956	$	288,358	$	(18,637)	$	269,721

In October 2016 the FASB issued ASU 2016-16, “Accounting for Income Taxes: Intra-Entity Asset Transfers of Assets Other than Inventory”. The new standard eliminates all intra-entity sales of assets other than inventory, the exception under current standards that permits the tax effects of intra-entity asset transfers to be deferred until the transferred asset is sold to a third party or otherwise recovered through use. As a result, a reporting entity would recognize the tax expense from the sale of the asset in the seller’s tax jurisdiction when the transfer occurs. Any deferred tax asset that arises in the buyer’s jurisdiction would also be recognized at the time of the transfer. The new standard was effective for the Company on January 1, 2018. There was not a material impact to the Company’s Consolidated Financial Statements upon adoption.

In January 2017, the FASB issued Accounting Standards Update 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business,” or ASU 2017-01. The amendments in ASU 2017-01 provide a screen to assist entities with evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. Under ASU 2017-01, an entity first determines whether substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets. If this threshold is met, the set is not a business and the entity then evaluates whether the set meets the requirement that a business include, at a minimum, an input and a substantive process that together significantly contribute to the ability to create outputs. ASU 2017-01 also narrows the definition of outputs by more closely aligning it with how outputs are described in ASC 606. ASU 2017-01 is effective for annual reporting periods, including interim periods within those periods, beginning after December 15, 2017, with early adoption permitted. The Company prospectively adopted ASU 2017-01 in the fourth quarter of 2016. The Company expects that the standard will result in accounting for more transactions as asset acquisitions as opposed to business combination.

In January 2017, the FASB issued Accounting Standards Update 2017-04, “Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment,” or ASU 2017-04. The amendments in ASU 2017-04 simplify the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test. In computing the implied fair value of goodwill under Step 2, an entity had to perform procedures to determine the fair value at the impairment testing date of its assets and liabilities. Instead, under the amendments in ASU 2017-04, an entity performs its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and recognizes an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value, but not more than the total amount of goodwill allocated to the reporting unit. ASU 2017-04 is effective for annual reporting periods, including interim periods within those periods, beginning after December 15, 2019, with early adoption permitted. The Company adopted this standard in the third quarter of 2017.

In March 2017, the FASB issued ASU 2017-07, “Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost”. The new guidance requires the service cost component to be presented separately from the other components of net benefit costs. Service cost will be presented with other employee compensation cost within income from operations. The other components of net benefit cost, such as interest cost, expected return on plan assets, amortization of prior service cost and gains or losses are required to be presented in other income. The Company adopted this standard on January 1, 2018.

Prior to January 1, 2018, all components of pension expense were recognized in operating income. The adoption of the standard impacted the Company’s Statement of Operations for year ending December 31, 2017 by increasing operating expenses $0.2 million and increasing other income by the same amount. For the year ending December 31, 2016 the adoption decreased operating expenses by $1.4 million and decreased other income by the same amount. There was no impact on income before income taxes. The Company elected the practical expedient allowing the use of the amounts disclosed for the various components of net benefit cost in the pension and other postretirement benefit plans footnote as the basis for the retrospective application.

In August 2017, the FASB issued ASU 2017-12, “Derivatives and Hedging (Topic 815) – Targeted Improvements to Accounting for Hedging Activities” (“ASU 2017-12”). The standard: (a) expands and refines hedge accounting for both financial and non-financial risk components, (b) aligns the recognition and presentation of the effects of hedging instruments and hedge items in the financial statements, and (c) includes certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. The guidance is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company adopted ASU 2017-12 on January 1, 2019. There was not a material impact to the Company’s Consolidated Financial Statements upon adoption.

In February 2018, the FASB issued ASU 2018-02 “Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” (“ASU 2018-02”). The standard gives entities the option to reclassify to retained earnings tax effects related to items in accumulated other comprehensive income that were impacted by the 2017 Tax Cuts and Jobs Act. The guidance is effective for all entities for fiscal years beginning after December 31, 2018 and interim periods within those fiscal years. Early adoption is permitted. The guidance may be applied in the period of adoption or retrospectively to each impacted period. The Company has elected to early adopt ASU 2018-02 on its consolidated financial Statements and apply it to the period of adoption. The impact of the adoption results in a $0.8 million reclassification from accumulated other comprehensive income to retained earnings, which is offset by an equivalent valuation allowance, the net impact is zero.

In August 2018, the FASB issued ASU No. 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (“ASU 2018-15”). This standard requires entities that are customers in cloud computing arrangements to defer implementation costs if they would be capitalized by the entity in software licensing arrangements under the internal-use software guidance. The guidance may be applied retrospectively or prospectively to implementation costs incurred after the date of adoption. ASU 2018-15 is effective for annual and interim reporting periods beginning after December 15, 2019, with early adoption permitted. The Company prospectively adopted this standard in the fourth quarter of 2018. At December 31, 2018, the Company capitalized $0.6 million of implementation costs and none of that amount was amortized during the quarter.

REVENUE RECOGNITION

12 Months Ended

Dec. 31, 2018

REVENUE RECOGNITION

REVENUE RECOGNITION

3. REVENUE RECOGNITION

The Company adopted ASC 606 on January 1, 2018. The adoption of ASC 606 impacted the accounting for contract acquisition costs, multiyear retail wireless contracts with promotional discounts, and deferral of certain activation fees as further described below. As a result of the adoption, the company established contract asset and liability balances and began capitalizing and subsequently amortizing contract acquisition costs.

Contract Assets and Liabilities

The Company recognizes contract assets and liabilities on its balance sheet. Contract assets represent unbilled amounts typically resulting from retail wireless contracts with both a multiyear service period and a promotional discount. In these contracts the revenue recognized exceeds the amount billed to the customer. The current portion of the contract asset is recorded in prepayments and other current assets and the noncurrent portion is included in other assets on the Company’s balance sheet. Contract liabilities consist of advance payments and billings in excess of revenue recognized. Retail revenue for postpaid customers is generally billed one month in advance and recognized over the period that the corresponding service is rendered to customers. To the extent the service is not provided by the reporting date the amount is recognized as a contract liability. Prepaid service, including mobile voice and data services, sold to customers is recorded as deferred revenue prior to the commencement of services. Contract liabilities are recorded in advanced payments and deposits on its balance sheets. Contract assets and liabilities consisted of the following (amounts in thousands):


		December 31, 2018		January 1, 2018		$ Change	% Change
Contract asset – current	$	1,900	$	1,176	$	724	62%
Contract asset – noncurrent		802		453		349	77%
Contract liabilities		(13,787)		(9,912)		(3,875)	39%
Net contract liability	$	(11,085)	$	(8,283)	$	(2,802)	34%

The contract asset-current is included in prepayments and other current assets, the contract asset – noncurrent is included in other assets, and the contract liabilities are included in advance payments and deposits on the Company’s balance sheet. The increase in the Company’s net contract liability was due to the timing of customer prepayments and contract billings. During the year ended December 31, 2018, the Company recognized revenue of $8.0 million related to its January 1, 2018 contract liability and amortized $1.8 million of the January 1, 2018 contract asset into revenue. The Company did not recognize any revenue in the year ended December 31, 2018 related to performance obligations that were satisfied or partially satisfied in previous periods.

Contract Acquisition Costs

The December 31, 2018 balance sheet includes current contract acquisition costs of $1.4 million in prepayments and other current assets and long term contract acquisition costs of $1.0 million in other assets. During the year ended December 31, 2018 the Company amortized $1.6 million of contract acquisition cost.

Remaining Performance Obligations

Remaining performance obligations represent the transaction price allocated to unsatisfied performance obligations of certain multiyear retail wireless contracts that include a promotional discount. The transaction price allocated to unsatisfied performance obligations was $12.1 million at December 31, 2018. The Company expects to satisfy the remaining performance obligations and recognize the transaction price within 24 months. The Company has certain retail, wholesale, and renewable energy contracts where transaction price is allocated to remaining performance obligations. However, the Company omits these contracts from the disclosure by applying the right to invoice, one year or less, and wholly unsatisfied performance obligation practical expedients.

Disaggregation

The Company's revenue is presented on a disaggregated basis in Note 16 based on an evaluation of disclosures outside the financial statements, information regularly reviewed by the chief operating decision maker for evaluating the financial performance of operating segments and other information that is used for performance evaluation and resource allocations. This includes revenue from wireline, wireless and renewable energy, as well as domestic versus international wireline and wireless services. This disaggregation of revenue depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors.

Impacts of adoption in the current period

The Company adopted ASC 606 on January 1, 2018 using the modified retrospective method. The Company elected the practical expedient to apply the new guidance only to contracts that were not substantially complete at the adoption date. The cumulative effect of adopting ASC 606 resulted in a contract asset of $1.6 million of which $1.2 million was recorded in prepayments and other current assets and $0.4 million was recorded in other assets, a contract liability of $0.2 million recorded in advance payments and deposits, contract acquisition costs of $1.5 million of which $0.9 million was recorded in prepayments and other current assets and $0.6 million was recorded in other assets, and a deferred tax liability of $0.3 million with the offset of $1.5 million recorded to retained earnings and $1.1 million recorded to minority interest. The tables below identify changes to the Company’s financial statements as of December 31, 2018 and for the year then ended as a result of the adoption of ASC 606 as compared to previous revenue guidance (amounts in thousands):


Balance Sheet - December 31, 2018
		Reported		Change		Under previous guidance
Prepayments and other current assets	$	37,855	$	(3,319)	$	34,536

Total current assets		275,765		(3,319)		272,446

Other assets		37,708		(1,785)		35,923

Total assets		1,107,304		(5,104)		1,102,200

Advance payments and deposits		20,574		(337)		20,237
Accrued taxes		31,795		(131)		31,664

Total current liabilities		140,650		(468)		140,182

Deferred income taxes		10,276		(302)		9,974

Total liabilities		283,980		(770)		283,210

Retained earnings		563,593		(2,481)		561,112
Minority interest		127,937		(1,853)		126,084

Total equity		823,324		(4,334)		818,990

Total liabilities and equity	$	1,107,304	$	(5,104)	$	1,102,200


		Statement of Operations

		Year ended December 31, 2018

		Reported		Change		Under previous guidance
Wireless revenue	$	198,824	$	(1,075)	$	197,749

Total revenue		451,207		(1,075)		450,132

Sales, marketing and customer service		35,207		755		35,962

Total operating expenses		390,184		755		390,939

Income from operations		61,023		(1,830)		59,193
Income before taxes		53,742		(1,830)		51,912
Income tax provision		18,870		(131)		18,739

Net income		34,872		(1,699)		33,173
Net income attributable to non-controlling interests		(15,057)		706		(14,351)
Net income attributable to ATN International, Inc. stockholders	$	19,815	$	(993)	$	18,822


		Statement of Comprehensive Loss

		Year ended December 31, 2018

		Reported		Change		Under previous guidance
Net income	$	34,872	$	(1,699)	$	33,173
Other comprehensive loss, net of tax		(5,152)		—		(5,152)
Comprehensive loss		29,720		(1,699)		28,021
Less: Comprehensive income attributable to non-controlling interests		(15,057)		706		(14,351)
Comprehensive income (loss) attributable to ATN International, Inc.	$	14,663	$	(993)	$	13,670


Statement of Cash Flows - Year ended December 31, 2018

		Reported		Change (1)		Under previous guidance
Net income	$	34,872	$	(1,699)	$	33,173

Materials and supplies, prepayments and other current assets	$	5,924	$	1,243	$	7,167
Accrued taxes		29,089		(131)		28,958
Accounts payable and accrued liabilities, advance payments and deposits and other current liabilities		(7,044)		(107)		(7,151)
Other assets	$	(238)	$	694	$	456

(1)

The adoption of ASC 606 had no impact on operating cash flows, investing cash flows, financing cash flows or net change in total cash.

IMPACT OF HURRICANES IRMA AND MARIA	12 Months Ended
IMPACT OF HURRICANES IRMA AND MARIA	Dec. 31, 2018
IMPACT OF HURRICANES IRMA AND MARIA
IMPACT OF HURRICANES IRMA AND MARIA	4. IMPACT OF HURRICANES IRMA AND MARIA During September 2017, the economy, the Company’s customer base and its operations in the U.S. Virgin Islands were severely impacted by the Hurricanes Irma and Maria. The Company’s wireless and wireline networks as well as its commercial operations were severely damaged by these storms. As a result of the significant damage to the wireline network and the lack of consistent commercial power in the territory, the Company was unable to provide most of its wireline services, which comprise the majority of revenue in this business, subsequent to the Hurricanes and through a majority of 2018. During the year ended December 31, 2017, the Company recorded a net pre-tax loss within the Company’s consolidated statement of operations of $4.0 million related to the impact of the Hurricanes. This loss consisted of $35.4 million for the write off of damaged assets, net of insurance recoveries of $34.6 million which were received in February 2018. This loss also included $3.2 million of additional operating expenses that were specifically incurred to address the impact of the Hurricanes. During the year ended December 31, 2018, the Company received $15.5 million in additional funding from the Federal Communications Commission’s (“FCC”) Universal Service Fund (“USF”) to further subsidize its operations in the U.S. Virgin Islands that was recorded as revenue. This level of additional funding is not expected to continue in future periods. During the years ended December 31, 2017 and 2018, the Company spent $8.6 million and $80.2 million, respectively, for network restoration and resiliency enhancements which allowed the reconnection of a significant majority of affected households and businesses. The Company believes that the wireline network restoration work is substantially complete, however, returning the Company’s revenue to pre-Hurricane levels may take significant time as a result of population movements, the economic impact the Hurricanes had on the market, and the Company’s subscriber base’s appetite for continued wireline services.

ACQUISITIONS AND DISPOSITIONS

12 Months Ended

Dec. 31, 2018

ACQUISITIONS AND DISPOSITIONS

ACQUISITIONS AND DISPOSITIONS

5. ACQUISITIONS AND DISPOSITIONS

International Telecom

Acquisitions

One Communications (formerly KeyTech Limited)

On May 3, 2016, the Company completed its acquisition of a controlling interest in One Communications Ltd. (formerly known as KeyTech Limited, “One Communications”), a publicly held Bermuda company listed on the Bermuda Stock Exchange (“BSX”) that provides broadband and video services and other telecommunications services to residential and enterprise customers in Bermuda and the Cayman Islands (the “One Communications Acquisition”). Subsequent to the completion of the Company’s acquisition, One Communications changed its legal name from KeyTech Limited and changed its “CellOne” and “Logic” trade names in Bermuda to “One Communications”. Prior to the Company’s acquisition, One Communications also owned a minority interest of approximately 43% in the Company’s previously held and consolidated subsidiary, Bermuda Digital Communications Ltd. (“BDC”), that provides wireless services in Bermuda. As part of the transaction, the Company contributed its ownership interest of approximately 43% in BDC and approximately $42 million in cash in exchange for a 51% ownership interest in One Communications. As part of the transaction, BDC was merged with and into a company within the One Communications group. The approximate 15% interest in BDC held in the aggregate by BDC’s minority shareholders was converted into the right to receive common shares in One Communications. Following the transaction, BDC became wholly-owned by One Communications, and One Communications continues to be listed on the BSX. A portion of the cash proceeds that One Communications received upon closing was used to fund a one-time special dividend to One Communications’ existing shareholders and to retire One Communications’ subordinated debt. On May 3, 2016, the Company began consolidating the results of One Communications within its financial statements in its International Telecom segment.

The One Communications Acquisition was accounted for as a business combination of a controlling interest in One Communications in accordance with ASC 805, Business Combinations, and the acquisition of an incremental ownership interest in BDC in accordance with ASC 810, Consolidation. The total purchase consideration of $41.6 million of cash was allocated to the assets acquired and liabilities assumed at their estimated fair values as of the date of the acquisition.


Consideration Transferred
Cash consideration - One Communications	$	34,518
Cash consideration - BDC		7,045
Total consideration transferred		41,563
Non-controlling interests - One Communications		32,909
Total value to allocate	$	74,472
Value to allocate - One Communications	$	67,427
Value to allocate - BDC		7,045

Purchase price allocation One Communications:
Cash		8,185
Accounts receivable		6,451
Other current assets		3,241
Property, plant and equipment		100,892
Identifiable intangible assets		10,590
Other long term assets		3,464
Accounts payable and accrued liabilities		(16,051)
Advance payments and deposits		(6,683)
Current debt		(6,429)
Long term debt		(28,929)
Net assets acquired		74,731

Gain on One Communications bargain purchase	$	7,304

Purchase price allocation BDC:
Carrying value of BDC non-controlling interest acquired		2,940

Excess of purchase price paid over carrying value of non-controlling interest acquired	$	4,105

The acquired property, plant and equipment is comprised of telecommunication equipment located in Bermuda and the Cayman Islands. The property, plant and equipment was valued using the income and cost approaches. Cash flows were discounted at an approximate 15% rate to determine fair value under the income approach. The property, plant and equipment have useful lives ranging from 3 to 18 years and the customer relationships acquired have useful lives ranging from 9 to 12 years. The fair value of the non-controlling interest was determined using the income approach and a discount rate of approximately 15%. The acquired receivables consist of trade receivables incurred in the ordinary course of business. The Company has subsequently collected the full amount of the receivables.

The purchase price and resulting bargain purchase gain are the result of the market conditions and competitive environment in which One Communications operates along with the Company's strategic position and resources in those same markets. Each of the Company and One Communications realized that their combined resources could better serve customers in Bermuda. The bargain purchase gain is included in operating income for the year ended December 31, 2016.

The Company’s income statement for the year ended December 31, 2016 includes $55.5 million of revenue and $2.8 million of income before taxes attributable to the One Communications Acquisition. The Company incurred $4.3 million of transaction related charges pertaining to legal, accounting and consulting services associated with the transaction, of which $3.4 million was incurred during the year ended December 31, 2016 and $0.9 million was incurred during the year ended December 31, 2015.

Viya (formerly Innovative) Transaction

On July 1, 2016, the Company completed its acquisition of all of the membership interests of Caribbean Asset Holdings LLC (“CAH”), the holding company for the group of companies operating video services, Internet, wireless and landline services in the U.S. Virgin Islands, British Virgin Islands and St. Maarten (collectively, “Viya”), from the National Rural Utilities Cooperative Finance Corporation (“CFC”). In April 2017, the U.S. Virgin Islands operations and the Company’s existing wireless operations rebranded their tradenames from “Innovative” and “Choice”, respectively, to “Viya.” The Company acquired the Viya operations for a contractual purchase price of $145.0 million, reduced by purchase price adjustments of $5.3 million (the “Viya Transaction”). In connection with the transaction, the Company financed $60.0 million of the purchase price with a loan from an affiliate of CFC, the Rural Telephone Finance Cooperative (“RTFC”) on the terms and conditions of a Loan Agreement by and among RTFC, CAH and ATN VI Holdings, LLC, the parent entity of CAH and a wholly-owned subsidiary of the Company. The Company funded the remaining purchase price with (i) $51.9 million in cash paid to CFC, (ii) $22.5 million in additional cash paid directly to fund Viya’ s pension in the fourth quarter of 2016, and (iii) $5.3 million to satisfy Viya’ s other postretirement benefit plan liability. On July 1, 2016, the Company began consolidating the results of Viya within its financial statements in its International Telecom segment. Subsequent to the Viya Transaction, the Company sold the acquired businesses in St. Maarten and the British Virgin Islands, as further described in “Dispositions” below.

The Viya Transaction was accounted as a business combination in accordance with ASC 805. The consideration transferred to CFC of $111.9 million, and used for the purchase price allocation, differed from the contractual purchase price of $145.0 million due to certain GAAP purchase price adjustments including a reduction of $5.3 million related to working capital adjustments and the Company assuming pension and other postretirement benefit liabilities of $27.8 million as discussed above. The Company transferred $51.9 million in cash and $60.0 million in loan proceeds to CFC for total consideration of $111.9 million that was allocated to the assets acquired and liabilities assumed at their estimated fair values as of the date of the acquisition. The table below represents the allocation of the consideration transferred to the net assets of Viya based on their acquisition date fair values:


Consideration Transferred	$	111,860
Non-controlling interests		221
Total value to allocate		112,081
Purchase price allocation:
Cash		4,229
Accounts receivable		6,553
Materials & supplies		6,533
Other current assets		1,927
Property, plant and equipment		108,284
Telecommunication licenses		7,623
Goodwill		20,586
Intangible assets		7,800
Other assets		4,394
Accounts payable and accrued liabilities		(15,971)
Advance payments and deposits		(7,793)
Deferred tax liability		(2,935)
Pension and other postretirement benefit liabilities		(29,149)
Net assets acquired	$	112,081

The acquired property, plant and equipment is comprised of telecommunication equipment located in the U.S Virgin Islands, British Virgin Islands and St. Maarten (subsequently disposed, see below). The property, plant and equipment was valued using the income and cost approaches. Cash flows were discounted between 14% and 25% based on the risk associated with the cash flows to determine fair value under the income approach. The property, plant and equipment have useful lives ranging from 1 to 18 years and the customer relationships acquired have useful lives ranging from 7 to 13 years. The fair value of the non-controlling interest was determined using the income approach with discount rates ranging from 15% to 25%. The acquired receivables consist of trade receivables incurred in the ordinary course of business. The Company has collected full amount of the receivables. The Company recorded a liability equal to the funded status of the plans in its purchase price allocation. Discount rates between 3.6% and 3.9% were used to determine the pension and postretirement benefit obligations.

The goodwill generated from the Viya Transaction is primarily related to value placed on the acquired employee workforces, service offerings, and capabilities of the acquired businesses as well as expected synergies from future combined operations. The goodwill is not deductible for income tax purposes.

The Company’s income statement for the year ended December 31, 2016 includes $53.0 million of revenue and $1.5 million of income before taxes attributable to the Viya Acquisition. The Company incurred $4.1 million of transaction related charges pertaining to legal, accounting and consulting services associated with the transaction, of which $2.2 million was incurred during the year ended December 31, 2016 and $1.9 million was incurred during the year ended December 31, 2015.

Disposition

On August 18, 2017, the Company completed the sale of the Viya cable operations located in the British Virgin Islands. The company did not recognize a gain or loss on the transaction.

On January 3, 2017, the Company completed the sale of the Viya cable operations located in St. Maarten for $4.8 million and recognized a gain of $0.1 million on the transaction.

On December 15, 2016, the Company transferred control of its subsidiary in Aruba to another stockholder in a nonreciprocal transfer. Subsequent to that date, it no longer consolidated the results of the operations of the Aruba business. The Company did not recognize a gain or loss on the transaction.

The results of the British Virgin Islands, St. Maarten, and Aruba operations are not material to the Company’s historical results of operations. Since the dispositions do not relate to a strategic shift in its operations, the historical results and financial position of the operations are presented within continuing operations.

U.S. Telecom

Acquisition

In July 2016, the Company acquired certain telecommunications fixed assets and the associated operations located in the western United States. The acquisition qualified as a business combination for accounting purposes. The Company transferred $9.1 million of cash consideration in the acquisition. The consideration transferred was allocated to $10.2 million of acquired fixed assets, $3.5 million of deferred tax liabilities, and $0.7 million to other net liabilities, and the resulting $3.1 million in goodwill which is not deductible for income tax purposes. Results of operations for the business are included in the U.S. Telecom segment and are not material to the Company’s historical results of operations.

Disposition

On March 8, 2017, the Company completed the sale of its integrated voice and data communications and wholesale transport businesses in New England and New York for consideration of $25.9 million (the “Sovernet Transaction”). The consideration included $2.0 million of contingent consideration which represented the fair value of payments related to certain operational milestones of the disposed assets. The value of the contingent consideration was up to $4.0 million based on whether or not the operational milestones are achieved by December 31, 2017. The table below identifies the assets and liabilities transferred (amounts in thousands):


Consideration Received	$	25,926
Assets and liabilities disposed
Cash		1,821
Accounts receivable		1,696
Inventory		639
Prepayments and other current assets		1,034
Property, plant and equipment		25,294
Other assets		288
Accounts payable and accrued liabilities		(1,718)
Advance payments and deposits		(1,897)
Net assets disposed		27,157

Consideration less net assets disposed		(1,231)

Transaction costs		(1,156)

Loss	$	(2,387)

Prior to the closing of the transaction, the Company repurchased non-controlling interests from minority shareholders in a Sovernet subsidiary for $0.7 million. The non-controlling interest had a book value of zero. Additionally, the Company recorded a loss on deconsolidation of $0.5 million.

The Company incurred $1.2 million of transaction related charges pertaining to legal, accounting and consulting services associated with the transaction, of which $0.6 million were incurred during the year ended December 31, 2017 and $0.6 million were incurred during the year ended December 31, 2016. Since the Sovernet disposition does not relate to a strategic shift in its operations, the historic results and financial position of the operations are presented within continuing operations.

Subsequent to close of the Sovernet Transaction, management continually monitored and assessed the probability of earning the contingent consideration. In September 2017, based on progress toward achieving the operational milestones, and the December 31, 2017 deadline under which to do so, management determined that earning the contingent consideration was unlikely. As a result, the fair value of the contingent consideration was reduced to zero. The amount was recorded as a loss on disposition of assets within operating income during the year ended December 31, 2017. The disposed assets did not achieve the operational milestones by the December 31 deadline.

Prior to the Sovernet Transaction, in the second quarter of 2016, the Company recorded an impairment loss of $11.1 million on assets related to Sovernet. The impairment consisted of a $3.6 million impairment of property, plant and equipment and $7.5 million impairment of goodwill.

Renewable Energy

Acquisition

On April 7, 2016, the Company completed its acquisition of a solar power development portfolio in India (the “Vibrant Energy Acquisition”). The business operates under the name Vibrant Energy. The projects to be developed initially are located in the states of Andhra Pradesh and Telangana and are based on a commercial and industrial business model, similar to the Company’s existing renewable energy operations in the United States. As of April 7, 2016, the Company began consolidating the results of Vibrant Energy in its financial statements within its Renewable Energy segment.

The Vibrant Energy Acquisition was accounted for as a business combination in accordance with ASC 805. The total purchase consideration of $6.2 million was allocated to the assets acquired and liabilities assumed at their estimated fair values as of the date of the acquisition. The table below represents the allocation of the consideration transferred to the net assets of Vibrant Energy based on their acquisition date fair values (in thousands):


Consideration Transferred	$	6,193
Purchase price allocation:
Cash		136
Prepayments and other assets		636
Property, plant and equipment		7,321
Goodwill		3,279
Accounts payable and accrued liabilities		(5,179)
Net assets acquired	$	6,193

The consideration transferred included $3.5 million paid at close of the transaction and $2.7 million of contingent consideration payable subsequent to that time, which was contingent upon the passage of time and achievement of production milestones that were considered probable. As of December 31, 2018, $1.4 million of the contingent consideration was paid, $0.2 million remains payable, and $1.1 million was not paid as the operational milestones were not achieved. The acquired property, plant and equipment is comprised of solar equipment and the accounts payable and accrued liabilities consists mainly of amounts payable for certain asset purchases. The fair value of the property, plant, and equipment was based on recent acquisition costs for the assets, given their recent purchase dates from third parties. The goodwill is not deductible for income tax purposes and primarily relates to the assembled workforce of the business acquired.

The Company incurred $11.4 million of transaction related charges pertaining to legal, accounting and consulting services associated with the transaction, of which $10.1 million was incurred during the year ended December 31, 2016 and $1.3 million was incurred during the year ended December 31, 2015.

Disposition

On November 6, 2018, the Company completed the sale of its U.S. solar business that owns and manages distributed generation solar power projects operated under the Ahana name in Massachusetts, California and New Jersey (the “U.S. Solar Operations”) to CleanCapital Holdco 4, LLC. The transaction has a total value of approximately $122.6 million, which includes a cash purchase price of $65.3 million and the assumption of approximately $57.3 million in debt, and is subject to certain other post-closing adjustments (the “U.S. Solar Transaction”). The Company is finalizing working capital adjustments. Approximately $6.5 million of the purchase price will be held in escrow for a period of twelve months after the closing to secure the Company’s indemnification obligation. The table below identifies the assets and liabilities transferred (amounts in thousands):


Consideration Received	$	65,286
Assets and liabilities disposed
Cash		3,049
Accounts receivable		1,248
Prepayments and other current assets		801
Property, plant and equipment		94,678
Restricted cash		8,407
Other assets		38
Current portion of long-term debt		(6,992)
Accounts payable and accrued liabilities		(938)
Accrued taxes		586
Long-term debt, excluding current portion		(48,038)
Net assets disposed		52,839

Consideration less net assets disposed		12,447

Transaction costs		(2,133)

Gain	$	10,314

The Company allocated $1.1 million of the gain to non-controlling interests within the consolidated income statement. During the year ended December 31, 2018, the Company incurred $2.1 million of transaction related charges pertaining to legal, accounting and consulting services associated with the transaction. The U.S. Solar Operations do not qualify as a discontinued operation because the disposition does not represent a strategic shift that has a major effect on the Company’s operations and financial results. As a result, the historical results are included in continuing operations.

Pro forma Results

The following table reflects unaudited pro forma operating results of the Company for the years ended December 31, 2016 and December 31, 2015 as if the One Communications and Viya Transactions occurred on January 1, 2015. Other acquisitions are not included in the pro forma amounts since the results are immaterial. The pro forma amounts adjust One Communications’ and Viya’s results to reflect the depreciation and amortization that would have been recorded assuming the fair value adjustments to property, plant and equipment and intangible assets had been applied from January 1, 2015. Also, the pro forma results were adjusted to reflect changes to the acquired entities’ capital structure related to the transaction. One Communications’ results reflect the retirement of $24.7 million of debt. Viya’s results reflect the retirement of $185.8 million of debt and the addition of $60 million of purchase price debt. Finally, the Company’s results were adjusted to reflect the Company’s incremental ownership in BDC.

The pro forma results for the year ended December 31, 2016 include $5.4 million of impairment charges recorded by One Communications and Viya prior to the Company’s acquisition of the businesses and were recorded prior to ATN’s acquisition of the entities. The pro forma results for the year ended December 31, 2015 include $168.7 million of impairment charges, $85.6 million recorded by One Communications and $83.1 million recorded by Viya. Both the 2016 and 2015 impairment charges were recorded prior to ATN’s acquisition of the entities. Amounts are presented in thousands, except per share data.


		Year ended December 31,
(unaudited)		2016				2015
		As		Pro-		As		Pro-
		Reported		Forma		Reported		Forma
Revenue	$	457,003	$	535,628	$	355,369	$	546,589
Net income (loss) attributable to ATN International, Inc. Stockholders		12,101		14,660		16,940		(97,102)
Earnings per share:
Basic		0.75		0.91		1.06		(6.06)
Diluted		0.75		0.90		1.05		(6.02)

The unaudited pro forma data is presented for illustrative purposes only and is not necessarily indicative of the operating resulted that would have occurred if the acquisitions had been consummated on these dates or of future operating results of the combined company following this transaction.

ACCOUNTS RECEIVABLE

12 Months Ended

Dec. 31, 2018

ACCOUNTS RECEIVABLE:

ACCOUNTS RECEIVABLE:

6. ACCOUNTS RECEIVABLE:

As of December 31, 2018 and 2017, accounts receivable consist of the following (in thousands):


	2018		2017
Retail	$	13,785	$	19,530
Wholesale		40,982		39,022
Accounts receivable		54,767		58,552
Less: allowance for doubtful accounts		(16,462)		(15,023)
Total accounts receivable, net	$	38,305	$	43,529

- Definition

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

+ References + Details

FIXED ASSETS

12 Months Ended

Dec. 31, 2018

FIXED ASSETS:

FIXED ASSETS:

7. FIXED ASSETS:

As of December 31, 2018 and 2017, property, plant and equipment consisted of the following (in thousands):


	Useful Life
	(in Years)	2018		2017
Telecommunications equipment and towers	5 -15	$	914,276	$	774,548
Solar assets	20-23		57		113,218
Office and computer equipment	3 -10		77,085		76,706
Buildings	15-39		48,900		48,058
Transportation vehicles	3 -10		15,039		12,221
Leasehold improvements	Shorter of useful life or lease term		2,033		2,864
Land	—		14,728		12,516
Furniture and fixtures	5 -10		9,200		6,674
Total property, plant and equipment			1,081,318		1,046,805
Construction in progress			107,598		123,001
Total property, plant and equipment			1,188,916		1,169,806
Less: Accumulated depreciation			(562,064)		(526,660)
Net fixed assets		$	626,852	$	643,146

Depreciation and amortization of fixed assets, using the straight‑line method over the assets’ estimated useful life, for the years ended December 31, 2018, 2017 and 2016 was $83.0 million, $83.3 million and $73.3 million, respectively. Included within telecommunication equipment and towers are certain right to use assets under capital lease with a cost of $27.7 million and $30.0 million and net book value of and $20.2 million and $24.4 million, as of December 31, 2018 and 2017, respectively. Remaining amounts due under the Indefeasible Rights of Use (“IRUs”) are $1.3 million and $0.6 million as of December 31, 2018 and 2017, respectively.

For the years ended December 31, 2017 and 2016, amounts of capital expenditures were offset by grants of $1.5 million and $2.3 million, respectively. There was no such offset for the year ended December 31, 2018.

In 2018, the U.S. Telecom segment sold approximately 100 cell sites for $24.0 million. The disposed assets had a book value of $8.8 million and the Company recorded a gain of $15.2 million on the transaction.

GOODWILL AND INTANGIBLE ASSETS

12 Months Ended

Dec. 31, 2018

GOODWILL AND INTANGIBLE ASSETS

GOODWILL AND INTANGIBLE ASSETS

8. GOODWILL AND INTANGIBLE ASSETS

Goodwill

The Company tests goodwill for impairment at each of its reporting units on an annual basis, which has been determined to be as of December 31st of each fiscal year. The Company’s reporting units are one level below its operating segments. The Company also tests goodwill between annual tests if an event occurs or circumstances change that indicate that the fair value of a reporting unit may be below its carrying value.

The Company’s qualitative goodwill impairment test includes, but is not limited to, assessing macroeconomic conditions, industry and market considerations, technological changes and trends, overall financial performance of the reporting unit. The Company quantitative test for goodwill impairment involves a comparison of the estimated fair value of a reporting unit to its carrying amount, including goodwill. The Company determines the fair value of a reporting unit using a discounted cash flow (“DCF”) analysis. Determining fair value requires the exercise of significant judgment, including judgments about appropriate discount rates, perpetual growth rates, and the amount and timing of expected future cash flows. Discount rates are based on a weighted‑average cost of capital (“WACC”), which represents the average rate a business must pay its providers of debt and equity. The cash flows employed in the DCF analysis were derived from internal earnings and forecasts and external market forecasts.

During 2018 and 2017, the Company performed qualitative assessments for all of its reporting units except for the 2017 trigger based impairment review in its International Telecom segment discussed below. During 2016, the Company performed a qualitative assessment for one reporting unit in its International Telecom segment and one reporting unit in its Renewable Energy segment and determined there was no impairment. Also in 2016, the company performed a quantitative assessment for one reporting unit in its International Telecom segment and one reporting unit in its US Telecom segment concluding no impairment was present.

The Company’s annual impairment assessment of its goodwill for all reporting units as of December 31, 2018 determined that no impairment relating to its goodwill existed during the year ended December 31, 2018.

In the third quarter of 2017, the Company determined that the damage caused by the Hurricanes caused a triggering event requiring it to assess the related reporting unit’s goodwill for impairment. After consideration of the disposals of fixed assets within the reporting unit, the impairment test for goodwill was performed by comparing the fair value of the reporting unit to its carrying amount. The Company calculated the fair value of the reporting unit by utilizing an income approach, with Level 3 valuation inputs, including a cash flow discount rate of 14.5%. Determining fair value requires the exercise of significant judgment, including judgments about appropriate discount rates, perpetual growth rates, and the amount and timing of expected future cash flows. The discount rate was based on a weighted‑average cost of capital, which represents the average rate the business would pay its providers of debt and equity. The cash flows employed in the discounted cash flow analysis were derived from internal and external forecasts. The impairment assessment concluded that no impairment was required for the goodwill because the fair value of the reporting unit exceeded its carrying amount.

During June 2016, as a result of recent industry consolidation activities and a review of strategic alternatives for the Company’s U.S. Wireline business in the Northeast, the Company identified factors indicating the carrying amount of certain assets may not be recoverable. More specifically, the factors included the competitive environment, recent industry consolidation, and the Company’s view of future opportunities in the market which began to evolve in the second quarter of 2016. On August 4, 2016, the Company entered into a stock purchase agreement to sell the majority of its U.S. Wireline business. The transaction was completed in March 2017.

As a result of this transaction and market developments, the Company determined it was appropriate to assess the reporting unit’s assets for impairment. The reporting unit holds three types of assets for purposes of impairment testing: i) other assets such as accounts receivable and inventory, ii) long lived assets such as property plant and equipment, and iii) goodwill. Management first assessed the other assets for impairment and determined no impairment was appropriate. Second, the property, plant and equipment was assessed for impairment. The impairment test compared the undiscounted cash flows from the use and eventual disposition of the asset group to its carrying amount and determined the carrying amount was not recoverable. The impairment loss of $3.6 million was equal to the amount by which the carrying amount exceeded the fair value. Third management assessed goodwill for impairment and recorded an impairment of $7.5 million. The Company utilized the income approach, with Level 3 valuation inputs, which considered both the purchase agreement and cash flows discounted at a rate of 14% in its fair value calculations. In total, the Company recorded an impairment charge of $11.1 million. The impairment charge is included in income from operations for the year ended December 31, 2016.

The table below disclosed goodwill recorded in each of the Company’s segments and accumulated impairment changes (in thousands):


	U.S.		International		Renewable
	Telecom		Telecom		Energy		Consolidated
Balance at December 31, 2016	$	35,268	$	24,326	$	3,279	$	62,873
Acquisitions		—		1,097		—		1,097
Balance at December 31, 2017		35,268		25,423		3,279		63,970
Acquisitions		—		—		—		—
Balance at December 31, 2018	$	35,268	$	25,423	$	3,279	$	63,970

	U.S.		International		Renewable
	Telecom		Telecom		Energy		Consolidated
Balance at December 31, 2017
Gross	$	35,268	$	25,423	$	3,279	$	63,970
Accumulated Impairment		—		—		—		—
Net		35,268		25,423		3,279		63,970
Balance at December 31, 2018
Gross		35,268		25,423		3,279		63,970
Accumulated Impairment		—		—		—		—
Net	$	35,268	$	25,423	$	3,279	$	63,970

Telecommunications Licenses

The Company tests those telecommunications licenses that are indefinite lived for impairment on an annual basis, which has been determined to be as of December 31 of each fiscal year. The Company also tests telecommunication licenses that are indefinite lived between annual tests if an event occurs or circumstances change that indicate that the fair value of a reporting unit may be below its carrying value.

The Company’s qualitative impairment test includes, but is not limited to, assessing macroeconomic conditions, industry and market considerations, technological changes and trends, overall financial performance, and legal and regulatory changes. The Company’s quantitative test for impairment involves a comparison of the estimated fair value of an asset to its carrying amount. The Company determines the fair value of a reporting unit using a discounted cash flow analysis with Level 3 valuation inputs.

The Company performed qualitative assessments for its annual impairment assessment of its indefinite lived telecommunications licenses as of December 31, 2018 and determined that there were no indications of potential impairments. The Company performed quantitative and qualitative assessments for its annual impairment assessments of its indefinite lived telecommunications licenses as of December 31, 2017 and 2016 and determined that there no impairments were required.

In the third quarter of 2017, the Company determined that the damage caused by the Hurricanes caused a triggering event requiring us to assess the related reporting unit’s indefinite lived telecommunications licenses for impairment. After consideration of the write-downs of fixed assets within the reporting unit, the impairment test for telecommunications licenses was performed by comparing the fair value of the asset to its carrying amount. The Company performed a qualitative and quantitative analysis. The Company calculated the fair value by utilizing an income approach, with Level 3 valuation inputs, including a cash flow discount rate of 14.5%. Determining fair value requires the exercise of significant judgment, including judgments about appropriate discount rates, perpetual growth rates, and the amount and timing of expected future cash flows. The discount rate was based on a weighted‑average cost of capital, which represents the average rate the business would pay its providers of debt and equity. The cash flows employed in the discounted cash flow analysis were derived from internal and external forecasts. The impairment assessment concluded that no impairment was required for the indefinite lived telecommunication licenses because the fair value exceeded its carrying amount.

The changes in the carrying amount of the Company’s telecommunications licenses, by operating segment, for the three years ended December 31, 2018 were as follows (in thousands):


	U.S.		Int'l
	Telecom		Telecom		Consolidated
Balance at December 31, 2016	$	24,944	$	23,347	$	48,291
Acquired licenses		47,692		—		47,692
Dispositions		(31)		—		(31)
Balance at December 31, 2017	$	72,605	$	23,347	$	95,952
Acquired licenses		485		—		485
Dispositions		(2,750)		—		(2,750)
Balance at December 31, 2018	$	70,340	$	23,347	$	93,687

The licenses acquired during 2018 and 2017 are expected to be available for use into perpetuity.

Customer Relationships

The customer relationships, all of which are included in the International Telecom segment, are being amortized on an accelerated basis, over the expected period during which their economic benefits are to be realized. The Company recorded $2.4 million, $3.2 million, and $2.0 million of amortization related to customer relationships during year ended December 31, 2018, 2017, and 2016, respectfully.

Future amortization of customer relationships, in its International Telecom segment, is as follows (in thousands):


	Future Amortization
2019	$	1,897
2020		1,528
2021		1,300
2022		1,143
2023		828
Thereafter		2,627
Total	$	9,323

Other Intangible Assets

The Company has other intangible assets of $4.5 million consisting of $3.0 million of franchise rights and $1.5 million of tradenames in its International Telecom segment. These assets are recorded in other assets on the Company’s balance sheet as of December 31, 2018. In 2016, the Company assessed the value of a tradename and concluded that its book value exceeded its fair value. As a result, the Company recorded a non-cash impairment charge of $0.3 million during the year ended December 31, 2016.

LONG-TERM DEBT	12 Months Ended
LONG-TERM DEBT	Dec. 31, 2018
LONG-TERM DEBT
LONG-TERM DEBT	9. LONG‑TERM DEBT The Company has a credit facility with CoBank, ACB and a syndicate of other lenders to provide for a $225 million revolving credit facility (the “Credit Facility”) that includes (i) up to $10 million under the Credit Facility for standby or trade letters of credit, (ii) up to $25 million under the Credit Facility for letters of credit that are necessary or desirable to qualify for disbursements from the FCC’s mobility fund and (iii) up to $10 million under a Swingline sub-facility. The Credit Facility has a maturity date of December 31, 2019 and the Company currently expects to enter into a new agreement before the maturity date. The Credit Facility also provides for the incurrence by the Company of incremental term loan facilities, when combined with increases to revolving loan commitments, in an aggregate amount not exceed $200 million (the “Accordion”). Amounts the Company may borrow under the Credit Facility bear interest at a rate equal to, at the Company’s option, either (i) the London Interbank Offered Rate (LIBOR) plus an applicable margin ranging between 1.50% to 1.75% or (ii) a base rate plus an applicable margin ranging from 0.50% to 0.75%. Swingline Loans will bear interest at the base rate plus the applicable margin for base rate loans. The base rate is equal to the higher of (i) 1.00% plus the higher of (x) the one-week LIBOR and (y) the one-month LIBOR; (ii) the federal funds effective rate (as defined in the Credit Facility) plus 0.50% per annum; and (iii) the prime rate (as defined in the Credit Facility). The applicable margin is determined based on the ratio (as further defined in the Credit Facility) of the Company’s indebtedness to EBITDA. Under the terms of the Credit Facility, the Company must also pay a fee ranging from 0.175% to 0.250% of the average daily unused portion of the Credit Facility over each calendar quarter. The Credit Facility contains customary representations, warranties and covenants, including a financial covenant that imposes a maximum ratio of indebtedness to EBITDA as well as covenants limiting additional indebtedness, liens, guaranties, mergers and consolidations, substantial asset sales, investments and loans, sale and leasebacks, transactions with affiliates and fundamental changes. The Company’s investment in “unrestricted” subsidiaries is limited to $400 Million less the aggregate amount of certain dividend payments to its stockholders. Amounts borrowed under the Accordion are also subject to proforma compliance with a net leverage ratio financial covenant. As of December 31, 2018, the Company in compliance with all of the financial covenants of the Credit Facility. As of December 31, 2018, the Company had no borrowings under the Credit Facility. Ahana Debt On December 24, 2014, in connection with the Ahana Acquisition, the Company assumed $38.9 million in long-term debt (the “Original Ahana Debt”). The Original Ahana Debt included multiple loan agreements with banks that bore interest at rates between 4.5% and 6.0%, matured at various times between 2018 and 2023 and were secured by certain solar facilities. Repayment of the Original Ahana Debt was being made in cash on a monthly basis until maturity. The Original Ahana Debt also included a loan from Public Service Electric & Gas (the “PSE&G Loan”). The PSE&G Loan bore interest at 11.3%, matured in 2027, and was secured by certain solar facilities. Repayment of the Original Ahana Debt with PSE&G were able to be made in either cash or SRECs, at the Company’s discretion, with the value of the SRECs being fixed at the time of the loan’s closing. Historically, the Company had made all repayments of the PSE&G Loan using SRECs. On December 19, 2016, Ahana’s wholly owned subsidiary, Ahana Operations, issued $20.6 million in aggregate principal amount of 4.427% senior notes due 2029 (the “Series A Notes”) and $45.2 million in aggregate principal amount of 5.327% senior notes due 2031 (the “Series B Notes” and collectively with the Series A Notes and the PSE&G Loan, the “Ahana Debt”). Interest and principal were payable semi-annually, until the respective maturity dates of March 31, 2029 (for the Series A Notes) and December 31, 2031 (for the Series B Notes). Cash flows generated by the solar projects that secured the Series A Notes and Series B Notes were only available for payment of such debt and were not available to pay other obligations or the claims of the creditors of Ahana or its subsidiaries. However, subject to certain restrictions, Ahana Operations held the right to the excess cash flows not needed to pay the Series A Notes and Series B Notes and other obligations arising out of the securitizations. The Series A Notes and Series B Notes were secured by certain assets of Ahana and were guaranteed by certain of its subsidiaries. A portion of the proceeds from the issuances of the Series A Notes and Series B Notes was used to repay the Original Ahana Debt in full except for the PSE&G Loan which remained outstanding after the refinancing. The Company capitalized $2.8 million of fees associated with the Series A Notes and Series B Notes which were recorded as a reduction to the debt carrying amount and was being amortized over the life of the notes. On November 6, 2018, the Company consummated the U.S. Solar Transaction, which included the transfer of the Original Ahana Debt, the Series A Notes and Series B Notes to the purchaser. One Communications Debt In connection with the One Communications Acquisition on May 3, 2016, the Company assumed $35.4 million in debt (the “One Communications Debt”) in the form of a loan from HSBC Bank Bermuda Limited. The One Communications Debt was scheduled to mature in 2021, was bearing interest at the three-month LIBOR rate plus a margin of 3.25%, and was repaid quarterly. The One Communications Debt contained customary representations, warranties and affirmative and negative covenants (including limitations on additional debt, guaranties, sale of assets and liens) and a financial covenant that limited the maximum ratio of indebtedness less cash to annual operating cash flow. On May 22, 2017, the Company amended and restated the One Communications Debt to increase the original facility by $8.6 million to $37.5 million. The amended and restated debt is scheduled to mature on May 22, 2022 and bears interest at the three month LIBOR rate plus an applicable margin rate ranging between 2.5% to 2.75% paid quarterly. The amended and restated One Communications Debt contains customary representations, warranties and affirmative and negative covenants (including limitations on additional debt, guaranties, sale of assets and liens) and financial covenants that limit the ratio of tangible net worth to long term debt and total net debt to EBITDA and require a minimum debt service coverage ratio (net cash generated from operating activities plus interest expense less net capital expenditures to debt repayments plus interest expense). The Company was in compliance with its covenants as of December 31, 2018. As a condition of the amendment of the One Communications Debt, within 90 days of the refinance date the Company was required to enter into a hedging arrangement with a notional amount equal to at least 30% of the outstanding loan balance and a term corresponding to the maturity of the One Communications Debt. In July 2017, the Company entered into an amortizing interest rate swap. This swap has been designated as a cash flow hedge, had an original notional amount of $11.0 million, has an interest rate of 1.874%, and expires in March 2022. As of December 31, 2018, the swap has an unamortized balance of $9.6 million. In connection with the amendment of the One Communications Debt, the Company increased the limit of its overdraft facility from $5.0 million to $10.0 million. This facility has an interest rate of three month LIBOR plus 1.75%. The Company capitalized $0.3 million of fees in 2017 associated with the One Communications Debt, which is recorded as a reduction to the debt carrying amount and will be amortized over the life of the debt. As of December 31, 2018, $31.9 million of the One Communications Debt was outstanding, there were no borrowings under the overdraft facility, and $0.2 million of the capitalized fees remain unamortized. As of December 31, 2018, One Communications was in compliance with its financial covenants. Viya Debt (formerly Innovative Debt) On July 1, 2016, the Company and certain of its subsidiaries entered into a $60.0 million loan agreement (the “Viya Debt”) with Rural Telephone Finance Cooperative (“RTFC”). The Viya Debt agreement contains customary representations, warranties and affirmative and negative covenants (including limitations on additional debt, guaranties, sale of assets and liens) and a financial covenant that limits the maximum ratio of indebtedness to annual operating cash flow to 3.5 to 1.0 (the “Net Leverage Ratio”). This covenant is tested on an annual basis at the end of each fiscal year. Interest is paid quarterly at a fixed rate of 4.0% and principal repayment is not required until maturity on July 1, 2026. Prepayment of the Viya Debt may be subject to a fee under certain circumstances. The debt is secured by certain assets of the Company’s Viya subsidiaries and is guaranteed by the Company. Earlier in 2018, the Company began funding the restoration of Viya’s network following the Hurricanes through an intercompany loan arrangement which exceeded certain limitations on Viya incurring additional debt. RTFC consented to these intercompany advances and increased the intercompany debt limit to $50.0 million. Subsequent to the end of the second quarter end, RTFC increased the limit to $75.0 million at the Company’s request due to an increase in the on-going restoration and resiliency costs. The Company was not in compliance with the Net Leverage Ratio covenant for the year ending December 31, 2018 and received a waiver from the RTFC on February 25, 2019 The Company paid a fee of $0.9 million in 2016 to lock the interest rate at 4% per annum over the term of the Viya debt. The fee was recorded as a reduction to the Viya debt carrying amount and will be amortized over the life of the loan. As of December 31, 2018, $60.0 million of the Viya Debt remained outstanding and $0.7 million of the rate lock fee was unamortized.

GOVERNMENT GRANTS	12 Months Ended
GOVERNMENT GRANTS	Dec. 31, 2018
GOVERNMENT GRANTS
GOVERNMENT GRANTS	10. GOVERNMENT GRANTS Universal Service Fund The Federal Universal Service Fund (‘USF’) is a subsidy program managed by the FCC. USF funds are disbursed to telecommunication providers through four programs: the High Cost Program; Low Income Program; Schools and Libraries Program (“E-Rate”); and Rural Health Care Program. The Company participates in High Cost Program, Low Income Program, Schools and Libraries Programs, and Rural Health Care Support programs as further described below. All of the funding programs are subject to certain operational and reporting compliance requirements. The Company believes it is in compliance will all applicable requirements. The FCC’s Mobility Funds and Connect America Funds are administered through the High Cost Program. The High-Cost Support program subsidizes telecommunications services in rural and remote areas. The FCC created the Phase I Mobility Fund (“Phase I Mobility Fund”), a one-time award meant to support wireless coverage in underserved geographic areas in the United States. The Company received $21.1 million of Phase I Mobility Fund support to its wholesale wireless business (the “Mobility Funds”) to be used to expand voice and broadband networks in certain geographic areas in order to offer either 3G or 4G service. Of these funds, $7.2 million was recorded as an offset to the cost of the property, plant, and equipment associated with these projects and, consequentially, a reduction of future depreciation expense. The remaining $13.9 million received offset operating expenses from inception of the program through part of the third quarter of 2018. The Mobility Funds projects and their operating results are included within the Company’s U.S. Telecom segment. As part of the receipt of the Mobility Funds, the Company committed to comply with certain additional FCC construction and other requirements. If the requirements are not met the funds may be subject to claw back provisions. The Company currently expects to comply with all applicable requirements related to these funds. During the years ended December 31, 2018, 2017 and 2016, the Company recorded $16.5 million, $16.5 million, and $8.2 million, respectively, of revenue from High Cost Support in its International Telecom segment for its U.S. Virgin Islands operations. Also, during each year ended December 31, 2018, 2017 and 2016, the Company recorded $1.2 million of High Cost Support revenue in its US Telecom segment. The Company is subject to certain operational, reporting and construction requirements as a result of this funding and the Company believes that it is in compliance with all of these requirements. In addition, the Company recorded revenue of $15.5 million during the year ended December 31, 2018, from additional funding authorized by the FCC following the Hurricanes. In August 2018, the Company was awarded $79.9 million over 10 years under the Connect America Fund Phase II Auction. The funding requires the Company to provide fixed broadband and voice services to certain eligible areas in the United States. The Company is subject to operational and reporting requirements under the program. The Company determined the award is a revenue grant and as a result will record the funding as revenue upon receipt. The Company expects to begin receiving funds under the Connect America Fund Phase II program during mid-2019. The E-Rate program provides discounted telecommunication access to eligible schools and libraries. The E-Rate program awards (i) special construction funding to build network connectivity for eligible participants, and (ii) pays for discounted recurring charges for eligible broadband services. The special construction funding is used to reimburse construction costs and is distributed upon completion of a project. As of December 31, 2018, the Company was awarded approximately $15.4 million of E-Rate grants with construction completion obligations between June 2019 and June 2020. Once these projects are constructed the Company is obligated to provide service to the E-Rate program participants. The Company is in various stages of constructing the networks and has not received any of the funds. The Company expects to meet all requirements associated with these grants. The Company also receives funding to provide discounted telecommunication services to eligible customers under the E-Rate, Lifeline, and Rural Health Care Support Programs. During the years ended December 31, 2018, 2017, and 2016 the Company recorded revenue of $8.2 million, $10.2 million, and $11.0 million, respectively, in the aggregate from these programs. The Company is subject to certain operational and reporting requirements under the above mentioned programs and it believes that it is in compliance with all of these requirements. Tribal Bidding Credit As part of the broadcast television spectrum incentive auction, the FCC implemented a tribal lands bidding credit to encourage deployment of wireless services utilizing 600 MHz spectrum on the lands of federally recognized tribes. The Company received a bidding credit of $7.4 million under this program in 2018. A portion of these funds will be used to offset network capital costs and a portion will be used to offset the costs of supporting the networks. The Company’s current estimate is that it will use $5.4 million to offset capital costs and, consequently, reduce future depreciation expense and $2.0 million to offset the cost of supporting the network which will reduce future operating expense. The credits are subject to certain requirements, including deploying service by January 2021 and meeting minimum coverage metrics. If the requirements are not met the funds may be subject to claw back provisions. The Company currently expects to comply with all applicable requirements related to these funds.

EQUITY

12 Months Ended

Dec. 31, 2018

EQUITY

EQUITY

11. EQUITY

Common Stock

The Company has paid quarterly dividends on its common stock since January 1999.

Treasury Stock

In September 2004, the Company’s Board of Directors approved a $5.0 million stock buyback plan (the “2004 Repurchase Plan”). Through September 19, 2016, the Company repurchased $4.1 million of its common stock, under the 2004 Repurchase Plan.

On September 19, 2016, the Company’s Board of Directors authorized the repurchase of up to $50.0 million of its common stock, from time to time, on the open market or in privately negotiated transactions (the “2016 Repurchase Plan”). The 2016 Repurchase Plan replaces the 2004 Repurchase Plan. As of December 31, 2018, the Company has $37.7 million available to be repurchased under the 2016 Repurchase Plan.

During the years ended December 31, 2018, 2017 and 2016, the Company repurchased the following shares under the 2004 Repurchase Plan and the 2016 Repurchase Plan:


		Aggregate
	Shares	Cost		Average
Year ended December 31,	Repurchased	(in thousands)		Repurchase Price
2018	30,427	$	1,577	$	51.82
2017	201,932		10,636		52.67
2016	32,407		2,195		64.72

During the years ended December 31, 2018, 2017 and 2016, the Company repurchased the following shares from employees to satisfy tax withholding and stock options exercise obligations incurred in connection with the vesting of restricted stock awards and the exercise of stock options:


		Aggregate
	Shares	Cost		Average
Year ended December 31,	Repurchased	(in thousands)		Repurchase Price
2018	141,180	$	10,859	$	76.76
2017	32,814		2,348		71.54
2016	38,279		2,775		72.50

Stock‑Based Compensation

The Company reserved 2,000,000 shares for the grant of stock options, restricted stock awards, restricted stock units, stock equivalents and awards of shares of common stock that are not subject to restrictions or forfeiture. As of December 31, 2018, the Company has approximately 801,000 shares available for grants.

Stock Options

Stock options have a term of ten years and vest annually and ratably over a period of four years.

The following table summarizes stock option activity for the years ended December 31, 2018 and 2017:


	Year Ended December 31, 2018
				Weighted Average
		Weighted Avg.		Remaining
	Number of	Exercise		Contractual	Aggregate
	Options	Price		Term (Years)	Intrinsic Value
Outstanding at January 1, 2018	200,021	$	41.76
Granted	—		—
Exercised	(158,021)		39.95
Outstanding at December 31, 2018	42,000		48.61	4.1	$	823,515
Vested and expected to vest at December 31, 2018	42,000		48.61	4.1	$	962,840
Exercisable at December 31, 2018	33,250		46.76	3.0	$	823,515


	Year Ended December 31, 2017
				Weighted Average
				Remaining
	Number of	Weighted Avg.		Contractual	Aggregate
	Options	Exercise Price		Term (Years)	Intrinsic Value
Outstanding at January 1, 2017	225,822	$	39.77
Granted	10,000		52.97
Exercised	(35,801)		32.29
Outstanding at December 31, 2017	200,021		41.76	3.6	$	2,780,253
Vested and expected to vest at December 31, 2017	200,021		41.76	3.6	$	2,780,253
Exercisable at December 31, 2017	187,521		40.77	3.6	$	2,757,353

The unvested options as of December 31, 2018 represent $0.1 million in unamortized stock‑based compensation which will be recognized over a weighted average term of 2.3 years.

The following table summarizes information relating to options granted and exercised during the years ended December 31, 2018, 2017 and 2016 (in thousands, except fair value of options granted data):


	2018		2017		2016
Weighted-average fair value of options granted	$	—	$	13.77	$	—
Aggregate intrinsic value of options exercised		5,927		936		1,591
Cash proceeds received upon exercise of options		72		1,030		649
Excess tax benefits from share-based compensation		—		—		591

The aggregate intrinsic value represents the total pre‑tax intrinsic value (the difference between the Company’s closing common stock price on December 31st and the exercise price, multiplied by the number of the in‑the‑money stock options) that would have been received by the stock option holders had all stock options holders exercised their stock options on December 31st. The amount of aggregate intrinsic value will change based on the fair market value of the Company’s common stock.

The estimated fair value of the options granted during the year ended December 31, 2017 was determined using a Black Scholes option pricing model, based on the following weighted average assumptions:


	2017

Risk-free interest rate	1.79	%
Expected dividend yield	1.28	%
Expected life	4.00	years
Expected volatility	34.01	%

The Company did not grant any options during the years ended December 31, 2018 or 2016. The Company recognized $0.1 million, $0.1 million and $0.1 million, respectively, of stock compensation expense relating to the granted options during 2018, 2017, and 2016, respectively.

Restricted Stock

Restricted stock issued under the 2008 Equity Investment Plan vest ratably over four years.

The following table summarizes restricted stock activity during the year ended December 31, 2018:


		Weighted Avg.
	Shares	Fair Value
Unvested as of January 1, 2018	214,938	$	68.62
Granted	111,474		59.52
Forfeited	(31,327)		66.53
Vested and issued	(94,432)		66.27
Unvested as of December 31, 2018	200,653	$	65.21

The following table summarizes restricted stock activity during the year ended December 31, 2017:


		Weighted Avg.
	Shares	Fair Value
Unvested as of January 1, 2017	229,040	$	67.13
Granted	95,095		68.09
Forfeited	(12,074)		69.71
Vested and issued	(97,123)		64.01
Unvested as of December 31, 2017	214,938	$	68.62

In connection with the grant of restricted shares, the Company recognized $6.1 million, $6.6 million and $6.2 million of compensation expense within its income statements for the years ended December 31, 2018, 2017, and 2016, respectively. In addition, the Company recognized $0.2 million, $0.3 million, and $0.1 million of compensation expense within its income statement for the year ended December 31, 2018, 2017 and 2016, respectively, for shares of the Company’s subsidiaries granted to the management team of those subsidiaries.

The unvested shares as of December 31, 2018 represent $9.0 million in unamortized stock based compensation which will be recognized over a weighted average period of 2.5 years.

INCOME TAXES

12 Months Ended

Dec. 31, 2018

INCOME TAXES

INCOME TAXES

12. INCOME TAXES

Tax Reform

The Tax Cuts and Jobs Act of 2017 (“2017 Tax Act” also commonly referred to as U.S. tax reform), which was signed into law on December 22, 2017, has resulted in significant changes to the U.S. corporate income tax system and the U.S. Virgin Islands mirror code which replaces “United States” with “U.S. Virgin Islands” throughout the Internal Revenue Code. These changes include a U.S. federal statutory rate reduction from 35% to 21%, which results in a U.S. Virgin Islands rate change of 38.5% to 23.1% under the mirror tax code which allows for a 10% surcharge on the U.S. federal tax rate, 100% expensing of certain qualified capital investments, the elimination or reduction of the alternative minimum tax regime, certain domestic deductions and credits and limitations on the deductibility of interest expense and executive compensation.

The Tax Act also transitions international taxation from a worldwide system to a modified territorial system and includes two base erosion prevention measures on non-U.S. earnings, which has the effect of subjecting certain earnings of the Company’s foreign subsidiaries to U.S. taxation as global intangible low taxed income (“GILTI”) and eliminates the deduction of certain payments made to related foreign corporations, and imposes a minimum tax if greater than regular tax under the base-erosion and anti-abuse tax (“BEAT”). These changes became effective beginning in 2018. The Tax Act also includes a one-time mandatory deemed repatriation tax on accumulated foreign subsidiaries' previously untaxed foreign earnings (“the Transition Toll Tax”).

Transition Toll Tax

The Tax Act eliminates the deferral of U.S. income tax on the historical unrepatriated earnings by imposing the Transition Toll Tax, which is a one-time mandatory deemed repatriation tax on undistributed foreign earnings. The Transition Toll Tax is assessed on the U.S. shareholder's share of the foreign corporation's accumulated foreign earnings that have not previously been taxed. Earnings in the form of cash and cash equivalents will be taxed at a rate of 15.5% and all other earnings will be taxed at a rate of 8.0%.

Due to the timing of the enactment and the complexity involved in applying the provisions of the Tax Act, the Company made reasonable estimates of the effects and recorded provisional amounts in its consolidated financial statements as of December 31, 2017. During 2018, the Company made adjustments to the provisional amounts, including a $3.2 million provision on the deemed repatriation of undistributed foreign earnings in addition to the $7.4 million provision recorded at year-end. The Company has completed its determination of the accounting implications for charges related to the Transition Toll Tax.

At December 31, 2018, the Company continues to assert its earnings are permanently reinvested outside the U.S.. Cash dividends from Guyana was made in 2018, however these distributions are not subject to Guyanese withholding tax and the U.S. state tax impact is minimal.

Effect on Deferred Tax Assets and Liabilities and other Adjustments

The Company’s deferred tax assets and liabilities are measured at the enacted tax rate expected to apply when these temporary differences are expected to be realized or settled. As the Company’s deferred tax liabilities exceed the balance of its deferred tax assets at the date of enactment, the Company recorded a tax benefit of $18.0 million in 2017, reflecting the decrease in the U.S. and U.S. Virgin Islands corporate income tax rates, including the state impact, net of federal benefit. An additional adjustment of $0.4 million was recorded in the three-month period ending September 30, 2018 for temporary differences finalized with the filing of the 2017 tax return. The Company has completed its accounting for the measurement of deferred taxes.

The BEAT provisions in the Tax Act eliminate the deduction of certain base-erosion payments made to related foreign corporations, and impose a minimum tax if greater than regular tax. The Company does not expect it will be subject to this tax and therefore have not included any tax impacts of BEAT in its consolidated financial statements for the year ended December 31, 2018. Based on the Company’s calculation under the GILTI rules, it does not have an inclusion as of December 31, 2018.

Status of the Company’s Assessment

In accordance with SAB 118, the Company has completed its determination of the accounting implications of the Tax Act as of December 22, 2018.

The components of income before income taxes for the years ended December 31, 2018, 2017 and 2016 are as follows (in thousands):


	2018		2017		2016
Domestic	$	28,917	$	25,232	$	28,047
Foreign		24,825		22,321		17,327
Total	$	53,742	$	47,553	$	45,374

The following is a reconciliation from the tax computed at statutory income tax rates to the Company’s income tax expense for the years ended December 31, 2018, 2017, and 2016 (in thousands):


	2018		2017		2016
Tax computed at statutory U.S. federal income tax rates	$	11,286	$	16,644	$	15,782
Non-controlling interest		(1,114)		(2,887)		(2,893)
Foreign tax rate differential		(2,716)		(6,621)		(3,074)
Over (under) provided in prior periods		(4,683)		(18)		1,069
Nondeductible expenses		1,610		929		1,134
Goodwill Impairment		—		—		2,622
Capitalized transactions costs		62		53		3,138
Change in tax reserves		10,657		4,433		2,561
State Taxes, net of federal benefit		1,674		1,075		1,853
Change in valuation allowance		1,539		6,137		(7,292)
Foreign tax credit expiration		—		—		4,179
Refund Claim for Domestic Production Deduction		235		(3,382)		—
Tax Cuts and Jobs Act of 2017		(148)		(10,639)		—
Capital loss		15		(6,990)		—
Other, net		453		(75)		2,081
Total Income Tax Expense	$	18,870	$	(1,341)	$	21,160

The components of income tax expense (benefit) for the years ended December 31, 2018, 2017 and 2016 are as follows (in thousands):

\
	2018		2017		2016
Current:
United States—Federal	$	24,546	$	375	$	15,763
United States—State		4,506		500		505
Foreign		13,060		11,289		10,528
Total current income tax expense	$	42,112	$	12,164	$	26,796
Deferred:
United States—Federal	$	(17,947)	$	(10,892)	$	(1,880)
United States—State		(2,832)		950		(291)
Foreign		(2,463)		(3,563)		(3,465)
Total deferred income tax expense (benefit)	$	(23,242)	$	(13,505)	$	(5,636)
Consolidated:
United States—Federal	$	6,599	$	(10,517)	$	13,883
United States—State		1,674		1,450		214
Foreign		10,597		7,726		7,063
Total income tax expense (benefit)	$	18,870	$	(1,341)	$	21,160

The significant components of deferred tax assets and liabilities are as follows as of December 31, 2018 and 2017 (in thousands):


	2018		2017
Deferred tax assets:
Receivables reserve	$	3,087	$	1,524
Temporary differences not currently deductible for tax		9,035		7,869
Deferred compensation		784		1,446
Pension		635		245
Net operating losses		29,496		26,685
Tax Credits		645		8,969
Total deferred tax asset		43,682		46,738
Deferred tax liabilities:
Property, plant and equipment, net		14,608		35,630
Intangible assets, net		5,959		5,817
Total deferred tax liabilities		20,567		41,447

Valuation allowance		(31,442)		(35,829)

Net deferred tax liabilities	$	(8,327)	$	(30,538)

Deferred tax assets and liabilities are reflected in the accompanying consolidated balance sheets as follows (in thousands):


	2018		2017
Deferred tax assets:
Current	$	—	$	—
Long term		1,949		1,194
Total deferred tax asset	$	1,949	$	1,194
Deferred tax liabilities:
Current	$	—	$	—
Long term		(10,276)		(31,732)
Total deferred tax liabilities	$	(10,276)	$	(31,732)
Net deferred tax liabilities	$	(8,327)	$	(30,538)

The Company's effective tax rate for the year ended December 31, 2018 and 2017 was 35.1% and (2.8)%, respectively. The effective tax rate for the year ended December 31, 2018 was primarily impacted by the following items: (i) a $10.6 million net increase of unrecognized tax positions, (ii) a $4.7 million net benefit to record a return to accrual adjustment, (iii) a $1.2 million benefit to recognize a capital loss carryover due to capital gains on sales of wireless licenses, (iv) a $1.4 million net benefit to record a valuation allowance release on an indefinite lived intangible asset, (v) a $1.7 million provision associated with the intercompany sale of assets from the U.S. to the U.S. Virgin Islands, and (vi) the mix of income generated among the jurisdictions in which the Company operates along with the exclusion of losses in jurisdictions where the Company cannot benefit from those losses as required by ASC 740-270-30-36(a), primarily in the U.S. Virgin Islands and India.

The effective tax rate for the year ended December 31, 2017 was primarily impacted by the following items: (i) a $10.6 million benefit for the net impact of the 2017 Tax Act which includes lowering the U.S. corporate income tax rate to 21% effective in 2018 resulting in an $18.0 million benefit from the remeasurement of the deferred tax assets and liabilities, which was partially offset by a provision of $7.4 million on the deemed repatriation of undistributed foreign earnings (ii) a $3.9 million benefit for the net capital transactions related to the Company’s businesses in New England, New York, the British Virgin Islands, and St. Maarten, (iii) a $3.4 million benefit for an amended return refund claim filed for tax year 2013, (iv) a $4.4 million increase (net) in unrecognized tax benefits related to current year and prior year positions, (v) a $6.1 million provision (net) to record the change in valuation allowance and, (vi) the mix of income generated among the jurisdictions in which the Company operates.

As of December 31, 2018, the Company estimated that it had gross federal and foreign net operating loss (“NOL”) carryforwards of $1.2 million and $115.8 million respectively. Of these, $64.0 million will expire between 2024 and 2037 and $53.1 million may be carried forward indefinitely.

The Company assesses available positive and negative evidence to estimate if sufficient future taxable income will be generated to realize the existing deferred tax assets. A significant piece of negative evidence evaluated is cumulative losses incurred in certain reporting jurisdictions over the three-year period ended December 31, 2018. Other negative evidence examined includes, but is not limited to, losses expected in early future years, a history of tax benefits expiring unused, uncertainties whose unfavorable resolution would adversely affect future results, and brief carryback, carry forward periods. On the basis of this evaluation, the Company believed it was more likely than not that the benefit from some of these federal, state, and foreign deferred taxes would not be realized.

In recognition of this risk at December 31, 2018 the Company has provided a valuation allowance against certain foreign deferred tax assets of $31.4 million. The foreign valuation allowance primarily relates to foreign net operating losses of $29.1 million, while the remaining $2.3 million is on other net foreign deferred tax assets which the Company does not expect to be able to realize. At December 31, 2017, the Company’s federal and foreign NOL carryforward valuation allowances were $1.9 million and $24.3 million, respectively. The federal foreign tax credit valuation allowance was $8.2 million and the remaining valuation allowance of $1.4 million was applied to the other foreign deferred taxes for entities with a full valuation allowance at December 31, 2017.

As of December 31, 2018, the Company has approximately $119.7 million of undistributed earnings of its foreign subsidiaries, which are considered to be indefinitely reinvested. As such, the Company has not provided deferred tax on those earnings. The Company received $51.6 million of cash distributions from GTT in 2018 but does not anticipate dividends in the future.

The Company had unrecognized tax benefits (including interest and penalty) of $34.7 million as of December 31, 2018, $24.1 million as of December 31, 2017 and, $20.0 million as of December 31, 2016. The net increase of the reserve during the year ended December 31, 2018 was attributable to an increase in tax positions for prior periods of $8.8 million, a net increase in tax positions for the current period of $3.4 million and partially offset by a lapse in statute of a prior year position of $1.6 million.

The following shows the activity related to unrecognized tax benefits (not including interest and penalty) during the three years ended December 31, 2018 (in thousands):


Gross unrecognized tax benefits at December 31, 2015	$	17,216
Increase in unrecognized tax benefits taken during a prior period		561
Increase in unrecognized tax benefits taken during the current period		2,321
Lapse in statute of limitations		(1,673)
Settlements		(521)
Gross unrecognized uncertain tax benefits at December 31, 2016		17,904
Increase in unrecognized tax benefits taken during a prior period		—
Increase in unrecognized tax benefits taken during the current period		3,394
Lapse in statute of limitations		(2)
Settlements		(335)
Gross unrecognized uncertain tax benefits at December 31, 2017		20,961
Increase in unrecognized tax benefits taken during a prior period		7,293
Increase in unrecognized tax benefits taken during the current period		3,408
Lapse in statute of limitations		(1,430)
Settlements		—
Gross unrecognized uncertain tax benefits at December 31, 2018	$	30,232

The Company’s accounting policy is to classify interest and penalties related to income tax matters as part of income tax expense. The accrued amounts for interest and penalties are $4.5 million as of December 31, 2018, and $3.1 million as of December 31, 2017, and $2.1 million as of December 31, 2016.

All $34.7 million of gross unrecognized uncertain tax benefits (including interest and penalty) would impact the effective tax rate if recognized.

The Company and its subsidiaries file income tax returns in the U.S. and in various, state and local and foreign jurisdictions. The statute of limitations related to the consolidated U.S. federal income tax return is closed for all tax years up to and including 2012. The federal tax audits are closed through 2014. There are no tax audits currently in progress. The expiration of the statute of limitations related to the various state and foreign income tax returns that the Company and subsidiaries file varies by jurisdiction.

RETIREMENT PLANS

12 Months Ended

Dec. 31, 2018

RETIREMENT PLANS

RETIREMENT PLANS

13. RETIREMENT PLANS

The Company has noncontributory defined benefit pension plans for eligible employees of its GTT and Viya subsidiaries who meet certain age and employment criteria. The Company also has a noncontributory defined medical, dental, vision, and life benefit plan for eligible employees of its Viya subsidiary who meet certain age and employment criteria. The Company acquired the Viya plans as a result of the July 2016 Viya Acquisition. The Company reviews the funded status of its pension plans and makes contributions based on that analysis. The benefits are based on the participants’ compensation during their employment and the credited service years earned by participants. The Company funds the other postretirement benefit plans as benefits are paid.

The weighted‑average rates assumed in the actuarial calculations for the pension and other postretirement benefit plans are as follows as of December 31, 2018, 2017 and 2016:


	2018		2017		2016
Discount Rate – Pension Benefit Obligation	4.7	%	4.2	%	4.6	%
Discount Rate – Pension Benefit Cost	4.3	%	4.6	%	4.3	%
Discount Rate – Postretirement Benefit Obligation	4.5	%	3.9	%	4.3	%
Discount Rate – Postretirement Benefit Cost	3.9	%	4.3	%	3.9	%
Annual salary increase	6.5	%	6.5	%	6.5	%
Expected long-term return on plan assets	6.1	%	6.1	%	6.3	%

The expected long‑term rate of return on plan assets was determined based on several factors including input from pension investment consultants, projected long‑term returns of equity and bond indices, and historical returns over the life of the related obligations of the fund. The Company, in conjunction with its pension investment consultants, reviews its asset allocation periodically and rebalances its investments when appropriate in an effort to earn the expected long‑term returns. The Company will continue to evaluate its long‑term rate of return assumptions at least annually and will adjust them as necessary.

The annual salary increase assumption reflects the Company’s estimated long term average rate of salary increases. The assumption is not applicable to the Viya pension and other postretirement plans as the obligations associated with these plans are not dependent on participant’s salaries.

The discount rate was determined based on a review of market data including yields on high quality corporate bonds with maturities approximating the remaining life of the project benefit obligations.

The other postretirement benefit plans healthcare cost trend assumptions is based on health care trend rates. The 2019 assumed medical health care cost trend rate is 6% trending to an ultimate rate of 4% in 2073. The 2019 and ultimate assumed dental care cost trend rate is 4%. The effect of a one-percentage-point increase in the assumed health care cost trend rates for each future year on the accumulated postretirement benefit obligation for health care benefits and the aggregate of the service and interest cost components of net periodic postretirement health care benefit cost is shown below:


	2018						2017
	Accumulated postretirement benefit obligation			Service cost plus interest cost			Accumulated postretirement benefit obligation			Service cost plus interest cost

At trend		4,013			308			5,308			389
At trend + 1%		4,305			338			5,723			429
Dollar Impact		292			30			415			40
Percentage Impact		7.3	%		9.7	%		7.8	%		10.3	%
At trend – 1%		3,755			282			4,944			355
Dollar Impact		(258)			(26)			(364)			(34)
Percentage Impact		(6.4)	%		(8.4)	%		(6.9)	%		(8.7)	%

Changes during the year in the projected benefit obligations and in the fair value of plan assets are as follows for 2018 and 2017 (in thousands):


	2018				2017

	Pension Benefits		Postretirement Benefits		Pension Benefits		Postretirement Benefits
Projected benefit obligations:
Balance at beginning of year:	$	80,355	$	5,307	$	76,119	$	5,108
Service cost		1,794		147		1,676		183
Interest cost		3,279		161		3,388		206
Benefits and settlements paid		(4,524)		(360)		(3,942)		(367)
Actuarial (gain) loss		(4,295)		(272)		3,114		177
Experience (gain) loss		291		(971)		—		—
Balance at end of year	$	76,900	$	4,012	$	80,355	$	5,307
Plan net assets:
Balance at beginning of year:	$	80,892	$	—	$	75,331	$	—
Actual return on plan assets		(730)		—		8,789		—
Company contributions		1,830		360		842		367
Benefits and settlements paid		(4,462)		(360)		(4,070)		(367)
Balance at end of year	$	77,530	$	—	$	80,892	$	—
Over/ (Under) funded status of plan	$	630	$	(4,012)	$	537	$	(5,307)

The Company reports an asset or liability on its balance equal to the funded status of its pension and other postretirement benefit plans. Plans in an overfunded status are aggregated and recorded as a net benefit asset in other assets. Plans in an underfunded status are aggregated and recorded as a net benefit liability in other liabilities. The funded status of the Company’s pension and other retirement benefit plans is below (in thousands):


	2018						2017

	GTT Pension Benefit		Viya Pension Benefit		Postretirement Benefits		GTT Pension Benefit		Viya Pension Benefit		Postretirement Benefits

Projected benefit obligation	$	14,712	$	62,188	$	4,012	$	13,205	$	67,150	$	5,307
Plan Net Assets		14,105		63,425		—		10,307		70,585		—
Over/ (Under) funded status of plan	$	(607)	$	1,237	$	(4,012)	$	(2,898)	$	3,435	$	(5,307)

The Company’s investment policy for its pension assets is to have a reasonably balanced investment approach, with a long‑term bias toward debt investments. The Company’s strategy allocates plan assets among equity, debt and other assets to achieve long‑term returns without significant risk to principal. The GTT pension fund has limitations from investing in the equity, debt or other securities of the employer, its subsidiaries or associates of the employer or any company of which the employer is a subsidiary or an associate. Furthermore, the GTT plan must invest between 70% - 80% of its total plan assets within Guyana.

The fair values for the pension plan’s net assets, by asset category, at December 31, 2018 are as follows (in thousands):


Asset Category	Total		Level 1		Level 2		Level 3
Cash, cash equivalents, money markets and other	$	5,173	$	5,173	$	—	$	—
Common stock		23,052		18,760		4,292		—
Mutual funds - fixed income		16,444		—		16,444		—
Mutual funds - equities		13,099		4,748		8,351		—
Fixed income securities		18,095		—		18,095		—
Other		1,667		1,177		—		490
Total	$	77,530	$	29,858	$	47,182	$	490

The fair values for the pension plan’s net assets, by asset category, at December 31, 2017 are as follows (in thousands):


Asset Category	Total		Level 1		Level 2		Level 3
Cash, cash equivalents, money markets and other	$	6,363	$	6,363	$	—	$	—
Common stock		28,467		25,312		3,155		—
Mutual funds - equities		9,248		9,248		—		—
Exchange traded funds - equities		904		904		—		—
Fixed income securities		35,414		—		35,414		—
Annuities		496		—		—		496
Total	$	80,892	$	41,827	$	38,569	$	496

The plan’s weighted‑average asset allocations at December 31, 2018 and 2017, by asset category are as follows:


	2018		2017
Cash, cash equivalents, money markets and other	7	%	8	%
Common stock	30		35
Mutual funds - fixed income	21		—
Mutual funds - equities	17		11
Fixed income securities	23		44
Other	2		2
Total	100	%	100	%

Amounts recognized on the Company’s consolidated balance sheets consist of (in thousands):


	As of December 31,
	2018				2017
	Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits

Accrued and current liabilities	$	—	$	271	$	—	$	392
Other Liabilities		744		3,742		2,898		4,915
Other Assets		1,375		—		3,435		—
Accumulated other comprehensive income, net of tax		938		1,350		2,953		174

Amounts recognized in accumulated other comprehensive loss consist of (in thousands):


	As of December 31,
	2018				2017
	Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits

Net actuarial gain	$	30	$	1,350	$	1,408	$	174
Accumulated other comprehensive income, pre-tax		30		1,350		1,408		174
Accumulated other comprehensive income, net of tax		938		1,350		2,953		174

Components of the plan’s net periodic pension cost are as follows for the years ended December 31, 2018, 2017 and 2016 (in thousands):


	2018				2017				2016
	Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits

Service cost	$	1,794	$	147	$	1,676	$	183	$	1,308	$	97
Interest cost		3,279		161		3,388		206		2,002		97
Expected return on plan assets		(4,835)		—		(4,470)		—		(2,024)		—
Amortization of actuarial (gain) loss		121		(67)		716		—		1,271		—
Curtailment		—		—		—		—		128		—
Net periodic pension cost	$	359	$	241	$	1,310	$	389	$	2,685	$	194

The Company does not plan to make any contributions to its pension and postretirement benefit plans during the year ending December 31, 2019.

The following estimated benefits, which reflect expected future service, as appropriate, are expected to be paid over the next ten years as indicated below (in thousands):


	Pension		Postretirement
Fiscal Year	Benefits		Benefits
2019	$	5,022	$	277
2020		4,292		255
2021		4,452		237
2022		5,079		261
2023		4,355		236
2024-2028		23,534		1,535
	$	46,734	$	2,801

COMMITMENTS AND CONTINGENCIES

12 Months Ended

Dec. 31, 2018

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

14. COMMITMENTS AND CONTINGENCIES

Regulatory and Litigation Matters

The Company and its subsidiaries are subject to certain regulatory and legal proceedings and other claims arising in the ordinary course of business, some of which involve claims for damages and taxes that are substantial in amount. The Company believes that, except for the items discussed below, for which the Company is currently unable to predict the final outcome, the disposition of proceedings currently pending will not have a material adverse effect on the Company’s financial position or results of operations.

The Company’s Guyana subsidiary, GTT, holds a license to provide domestic fixed services and international voice and data services in Guyana on an exclusive basis until December 2030. Since 2001, the Government of Guyana has stated its intention to introduce additional competition into Guyana’s telecommunications sector. In connection therewith, the Company and GTT have met on several occasions with officials of the Government of Guyana to discuss potential modifications of GTT’s exclusivity and other rights under the existing agreement and license. On July 18, 2016, the Guyana Parliament passed telecommunications legislation, and on August 5, 2016, the legislation was signed into law that introduces material changes to many features of Guyana’s existing telecommunications regulatory regime with the intention of creating a more competitive market. The legislation does not have the effect of terminating the Company’s exclusive license. Instead the legislation as passed requires the Minister of Telecommunications to conduct further proceedings and issue implementing orders to enact the various provisions of the legislation, including the issuance of competing licenses. The Company cannot predict the manner in which or when the legislation will be implemented by the Minister of Telecommunications.

In January 2018 the Government of Guyana and the Company met to discuss modifications of the Company’s exclusivity rights and other rights under its existing agreement and license. Those discussions are on-going, however, there can be no assurance that those discussions will be concluded before the Government issues new licenses contemplated by the legislation or at all, or that such discussions will satisfactorily address the Company’s contractual exclusivity rights. Although the Company believes that it would be entitled to damages or other compensation for any involuntary termination of its contractual exclusivity rights, it cannot guarantee that the Company would prevail in a proceeding to enforce its rights or that its actions would effectively halt any unilateral action by the Government.

Historically, GTT has been subject to other litigation proceedings and disputes in Guyana that, while not conclusively resolved, to the Company’s knowledge have not been the subject of discussions or other significant activity in the last five years. It is possible, but the Company believes unlikely, that these disputes, as discussed below, may be revived. The Company believes that none of these additional proceedings would, in the event of an adverse outcome, have a material impact on the Company’s consolidated financial position, results of operation or liquidity.

In a letter dated September 8, 2006, the National Frequency Management Unit (“NFMU”) agreed that total spectrum fees in Guyana should not increase for the years 2006 and 2007. However, that letter implied that spectrum fees in 2008 and onward may be increased beyond the amount GTT agreed to with the Government. GTT has objected to the NFMU’s proposed action and reiterated its position that an increase in fees prior to development of an acceptable methodology would violate the Government’s prior agreement. In 2011, GTT paid the NFMU $2.6 million representing payments in full for 2008, 2009 and 2010. However, by letter dated November 23, 2011, the NFMU stated that it did not concur with GTT’s inference that the amount was payment in full for the specified years as it was NFMU’s continued opinion that the final calculation for spectrum fees was not agreed upon and was still an outstanding issue. By further letter dated November 24, 2011, the NFMU further rejected a proposal that was previously submitted jointly by GTT and another communications provider that outlined a recommended methodology for the calculation of these fees. The NFMU stated that it would prepare its own recommendation for consideration by the Minister of Telecommunications, who would decide the matter. GTT has paid undisputed spectrum fees according to the methodology used for its 2011 payments, and has reserved amounts payable according to this methodology. There have been limited further discussions on this subject and GTT has not had the opportunity to review any recommendation made by the NFMU to the Minister.

In November 2007, Caribbean Telecommunications Limited (“CTL”) filed a complaint in the U.S. District Court for the District of New Jersey against GTT and ATN claiming breach of an interconnection agreement for domestic cellular services in Guyana and related claims. CTL asserted over $200 million in damages. GTT and ATN moved to dismiss the complaint on procedural and jurisdictional grounds. On January 26, 2009, the court granted the motions to dismiss the complaint on the grounds asserted. In November 2009 and again in April 2013, CTL filed and then abandoned a similar claim against GTT and the Public Utility Commission in the High Court of Guyana. CTL once more filed a similar claim against the Company in December 2017, seeking damages of $25 million; however, this matter was dismissed in May 2018. CTL made an untimely filing for an appeal thereafter, which the court subsequently denied. The Company continues to believe this claim is without merit and intends to vigorously defend against it.

On May 8, 2009, a GTT competitor, Digicel, filed a lawsuit in Guyana challenging the legality of GTT’s exclusive license rights under Guyana’s constitution. Digicel initially filed this lawsuit against the Attorney General of Guyana. On May 13, 2009, GTT petitioned to intervene in the suit in order to oppose Digicel’s claims and GTT’s petition was granted on May 18, 2009. GTT filed an answer to the charge on June 22, 2009. The case remains pending. The Company believes that any legal challenge to GTT’s exclusive license rights granted in 1990 is without merit and the Company intends to defend vigorously against such legal challenge.

GTT has filed several lawsuits in the High Court of Guyana asserting that, despite its denials, Digicel is engaged in international bypass in violation of GTT’s exclusive license rights, the interconnection agreement between the parties, and the laws of Guyana. GTT is seeking injunctive relief to stop the illegal bypass activity and money damages. Digicel filed counterclaims alleging that GTT has violated the terms of the interconnection agreement and Guyana laws. These suits, filed in 2010 and 2012, have been consolidated with Digicel’s constitutional challenge described above and is scheduled to proceed to trial in the second quarter of 2019. GTT intends to prosecute these matters vigorously.

GTT is also involved in several legal claims regarding its tax filings with the Guyana Revenue Authority dating back to 1991 regarding the deductibility of intercompany advisory fees as well as other tax assessments. The Company maintains that any liability GTT might be found to have with respect to the disputed tax assessments, totaling $44.1 million, would be offset in part by the amounts necessary to ensure that GTT’s return on investment was no less than 15% per annum for the relevant periods. The Company believes that some adverse outcome is probable and has accordingly accrued $5.0 million as of December 31, 2018 for these matters.

Lease Commitments and Other Obligations

The Company leases approximately 2.5 million square feet for its operations centers, administrative offices and retail stores as well as certain tower sites under non‑cancelable operating leases. The Company’s obligations for payments under these leases are as follows at December 31, 2018 (in thousands):


2019	$	21,941
2020		18,813
2021		12,406
2022		8,466
2023		4,142
Thereafter		5,991
Total obligations under operating leases	$	71,759

Rent expense for the years ended December 31, 2018, 2017 and 2016 was $21.1 million, $20.9 million and $19.8 million, respectively.

RELATED PARTY TRANSACTIONS	12 Months Ended
RELATED PARTY TRANSACTIONS	Dec. 31, 2018
RELATED PARTY TRANSACTIONS
RELATED PARTY TRANSACTIONS	15. RELATED‑PARTY TRANSACTIONS In October 2014, the Company’s U.S. Virgin Islands business, Choice Communications, LLC (“Choice”), entered into a tower lease with Tropical Tower Ltd (“Tropical Tower”), an entity 90% owned by Cornelius B. Prior, Jr., the former Chairman of the Company’s Board of Directors. When aggregated with amounts that Choice currently pays to Tropical Tower for an existing tower lease entered into in April 2012, Choice will pay approximately $117,000 per year in rental payments to Tropical Tower. Each tower lease has an initial term of five years, with two additional five-year renewal periods and has provisions for an increase in rent by 5% each year. The Company’s Audit Committee reviewed the specific structure and terms of the October 2014 lease, as negotiated by Choice management, and unanimously approved the arrangement described above in accordance with the terms of the Company’s Related Person Transaction Policy.

SEGMENT REPORTING

12 Months Ended

Dec. 31, 2018

SEGMENT REPORTING

SEGMENT REPORTING

16. SEGMENT REPORTING

The Company has the following three reportable and operating segments: i) U.S. Telecom, ii) International Telecom, and iii) Renewable Energy.

The following tables provide information for each operating segment (in thousands):


For the Year Ended December 31, 2018

	U.S.		International		Renewable		Corporate and
	Telecom		Telecom		Energy		Other (1)		Consolidated
Revenue
Wireless	$	108,878	$	89,946	$	—	$	—	$	198,824
Wireline		6,602		223,623		—		—		230,225
Renewable Energy		—		—		22,158		—		22,158
Total Revenue		115,480		313,569		22,158		—		451,207
Depreciation and amortization		24,615		48,889		6,589		5,626		85,719
Non-cash stock-based compensation		—		88		105		6,227		6,420
Operating income (loss)		36,813		45,022		13,440		(34,252)		61,023


For the Year Ended December 31, 2017

	U.S.		International		Renewable		Corporate and
	Telecom		Telecom		Energy		Other (1)		Consolidated
Revenue
Wireless	$	143,028	$	89,473	$	—	$	—	$	232,501
Wireline		12,695		215,132		—		—		227,827
Renewable Energy		—		—		20,865		—		20,865
Total Revenue		155,723		304,605		20,865		—		481,193
Depreciation and amortization		25,601		50,007		6,668		4,658		86,934
Non-cash stock-based compensation		—		188		114		6,675		6,977
Operating income (loss)		55,317		28,308		5,179		(33,496)		55,308


For the Year Ended December 31, 2016

	U.S.		International		Renewable		Corporate and
	Telecom		Telecom		Energy		Other (1)		Consolidated
Revenue
Wireless	$	150,044	$	94,360	$	—	$	—	$	244,404
Wireline		26,683		163,915		—		—		190,598
Renewable Energy		—		—		22,001		—		22,001
Total Revenue		176,727		258,275		22,001		—		457,003
Depreciation and amortization		24,470		40,493		4,987		6,030		75,980
Non-cash stock-based compensation		—		22		114		6,274		6,410
Operating income (loss)		49,078		36,910		(246)		(34,472)		51,270



	U.S.		International		Renewable		Corporate and
	Telecom		Telecom		Energy		Other (1)		Consolidated
December 31, 2018
Cash, Cash equivalents, and Investments	$	19,118	$	32,390	$	62,678	$	78,043	$	192,229
Total current assets		36,801		75,304		80,553		83,107		275,765
Fixed assets, net		78,102		482,770		45,599		20,381		626,852
Goodwill		35,269		25,421		3,280		—		63,970
Total assets		172,634		622,454		130,427		181,789		1,107,304
Total current liabilities		15,783		82,575		3,465		38,827		140,650
Total debt		—		90,970		12		—		90,982
December 31, 2017
Cash, Cash equivalents, and Investments	$	19,585	$	110,700	$	8,120	$	76,627	$	215,032
Total current assets		40,975		190,396		18,060		93,497		342,928
Fixed assets, net		99,462		367,485		158,447		17,752		643,146
Goodwill		35,269		25,421		3,280		—		63,970
Total assets		200,142		629,007		192,406		184,050		1,205,605
Total current liabilities		41,248		91,887		14,754		13,816		161,705
Total debt		—		94,577		61,215		—		155,792


		Capital Expenditures

		U.S.		International			Renewable		Corporate and
Year ended December 31,		Telecom		Telecom			Energy		Other (1)		Consolidated
2018	$	13,389	$	160,013	(2)	$	4,515	$	8,004	$	185,921
2017		22,230		80,912			32,738		6,491		142,371

(1)

Reconciling items refer to corporate overhead expenses and consolidating adjustments.

(2)

Includes $80.2 million of expenditures used to rebuild the Company’s damaged networks in the U.S. Virgin Islands which was impacted by the Hurricanes. These expenditures were financed, in part, by the $34.6 million of insurance proceeds the Company received during the first quarter of 2018.

The table below identifies the Company’s revenues and long-lived assets by geographic location. The Company attributes revenue to geographic location based on location of the customer (in thousands):


	2018				2017				2016
			Long-Lived				Long-Lived				Long-Lived
	Revenues		Assets		Revenues		Assets		Revenues		Assets

U.S.	$	132,288	$	234,514	$	173,632	$	358,032	$	198,300	$	265,528
Guyana		102,056		151,084		93,524		129,909		91,653		132,609
U.S Virgin Islands		79,785		216,173		83,194		137,018		58,431		110,773
Bermuda		103,281		137,992		127,244		165,243		83,006		94,976
Other Foreign Countries		33,797		91,774		3,599		71,282		25,613		76,575
	$	451,207	$	831,538	$	481,193	$	861,484	$	457,003	$	680,461

QUARTERLY FINANCIAL DATA (UNAUDITED)

12 Months Ended

Dec. 31, 2018

QUARTERLY FINANCIAL DATA (UNAUDITED)

QUARTERLY FINANCIAL DATA (UNAUDITED)

17. QUARTERLY FINANCIAL DATA (UNAUDITED)

Following is a summary of the Company’s quarterly results of operations for the years ended December 31, 2018 and 2017 (in thousands):


	2018 Consolidated for the Three Months Ended
	March 31		June 30		September 30		December 31
Total revenue	$	104,475	$	117,788	$	121,138	$	107,806
Operating expenses		100,266		102,035		90,395		97,488
Income from operations		4,209		15,753		30,743		10,318
Other income (expense), net		(2,591)		(2,885)		(2,823)		1,018
Income from continuing operations before income taxes		1,618		12,868		27,920		11,336
Income taxes		3,921		2,088		7,010		5,851
Net income (loss)		(2,303)		10,780		20,910		5,485
Net income attributable to non-controlling interests, net of tax		(3,252)		(3,564)		(3,887)		(4,354)
Net income (loss) attributable to ATN International, Inc. stockholders	$	(5,555)	$	7,216	$	17,023	$	1,131
Net income (loss) per weighted average basic share attributable to ATN International, Inc. stockholders
Total		(0.35)		0.45		1.07		0.07
Net income (loss) per weighted average diluted share attributable to ATN International, Inc. stockholders
Total		(0.35)		0.45		1.07		0.07


	2017 Consolidated for the Three Months Ended
	March 31		June 30		September 30		December 31
Total revenue	$	128,115	$	123,245	$	122,132	$	107,701
Operating expenses		110,359		107,442		141,697		66,387
Income from operations		17,756		15,803		(19,565)		41,314
Other income (expense), net		(3,044)		(2,298)		(2,295)		(118)
Income (loss) from continuing operations before income taxes		14,712		13,505		(21,860)		41,196
Income taxes		3,128		2,596		(884)		(6,181)
Net income (loss)		11,584		10,909		(20,976)		47,377
Net income attributable to non-controlling interests, net of tax		(4,725)		(5,026)		(3,784)		(3,871)
Net income (loss) attributable to ATN International, Inc. stockholders	$	6,859	$	5,883	$	(24,760)	$	43,506
Net income (loss) per weighted average basic share attributable to ATN International, Inc. stockholders
Total		0.42		0.36		(1.53)		2.71
Net income (loss) per weighted average diluted share attributable to ATN International, Inc. stockholders
Total		0.42		0.36		(1.53)		2.71

SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2018

SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE I I

ATN INTERNATIONAL, INC. AND SUBSIDIARIES

VALUATION AND QUALIFYING ACCOUNTS

(Amounts in Thousands)


	Balance at		Purchase		Charged to				Balance
	Beginning		Price		Costs and				at End
	of Year		Accounting		Expenses		Deductions		of Year
YEAR ENDED, December 31, 2016
Description:
Valuation allowance on foreign tax credit carryforwards	$	4,180	$	—	$		$	4,180	$	—
Valuation allowance on foreign net operating losses and other deferred taxes		1,672		41,941		217		1,922		41,908
Valuation allowance on state net operating losses		1,962		—		—		1,409		553
Allowance for doubtful accounts		9,294		—		5,095		1,240		13,149
	$	17,108	$	41,941	$	5,312	$	8,751	$	55,610
YEAR ENDED, December 31, 2017
Description:
Valuation allowance on foreign tax credit carryforwards	$	—	$	—	$	8,226	$	—	$	8,226
Valuation allowance on capital loss carryforwards		—		—		1,881		—		1,881
Valuation allowance on foreign net operating losses and other deferred taxes		41,908		—		839		17,025		25,722
Valuation allowance on state net operating losses		553		—		—		553		—
Allowance for doubtful accounts		13,149		—		3,993		2,119		15,023
	$	55,610	$	—	$	14,939	$	19,697	$	50,852
YEAR ENDED, December 31, 2018
Description:
Valuation allowance on foreign tax credit carryforwards	$	8,226	$	—	$	(8,226)	$	—	$	—
Valuation allowance on capital loss carryforwards		1,881		—		(1,881)		—		—
Valuation allowance on foreign net operating losses and other deferred taxes		25,722		—		5,877		157		31,442
Allowance for doubtful accounts		15,023		—		5,134		3,695		16,462
	$	50,852	$	—	$	904	$	3,852	$	47,904

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

12 Months Ended

Dec. 31, 2018

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

Use of Estimates

Cash and Cash Equivalents

Short Term Investments

Restricted Cash

Allowance for Doubtful Accounts

Inventory, Materials and Supplies

Fixed Assets

Goodwill and Indefinite-Lived Intangible Assets

Goodwill and Indefinite‑Lived Intangible Assets

Other Intangible Assets

Debt

Non-Controlling Interests

Non‑Controlling Interests

Changes in Accumulated Other Comprehensive Income (Loss)

Changes in accumulated other comprehensive income (loss), by component, were as follows (in thousands):


	Projected
	Pension
	Benefit		Translation
	Obligation		Adjustment		Other		Total

Balance at December 31, 2015	$	(3,481)	$	(223)	$	—	$	(3,704)
Adjust funded status of pension plan, net of tax of $0.7 million		5,251		—		—		5,251
Foreign currency translation adjustment		—		(687)		—		(687)
Unrealized gain on marketable securities		—		—		868		868
Balance at December 31, 2016		1,770		(910)		868		1,728
Adjust funded status of pension plan, net of tax of $0.7 million		1,357		—		—		1,357
Foreign currency translation adjustment		—		1,265		—		1,265
Reclassifications of gains on sale of marketable securities to net income		—		—		(1,044)		(1,044)
Unrealized gain on marketable securities		—		—		440		440
Balance at December 31, 2017		3,127		355		264		3,746
Adjust funded status of pension plan, net of tax of $0.6 million		(840)		—		—		(840)
Foreign currency translation adjustment		—		(4,390)		—		(4,390)
Adoption of ASU 2016-01		—		—		(203)		(203)
Interest rate swap		—		—		78		78
Balance at December 31, 2018	$	2,287	$	(4,035)	$	139	$	(1,609)

Amounts reclassified from accumulated other comprehensive income to net income were as follows (in thousands):


		2018		2017		2016
Pension and other postretirement benefit plans	$	54	$	716	$	1,300
Realized gains on marketable securities		—		(1,044)		—
Total	$	54	$	(328)	$	1,300

Revenue Recognition

The Company earns revenue from its telecommunication and renewable energy operations. The Company recognizes revenue through the following steps:

Identification of the contract with a customer

Identification of the performance obligations in the contract

Determination of the transaction price

Allocation of the transaction price to the performance obligations in the contract

Recognize revenue when, or as, the Company satisfies performance obligations

Revenue Recognition- Telecommunications

Sales and use and state excise taxes collected from customers that are remitted to the governmental authorities are reported on a net basis and excluded from the revenues and sales.

Revenue Recognition-Renewable Energy

Contract Acquisition Costs

Operating Expenses

Restructuring charges. Restructuring charges are costs incurred as a result of reorganizing the Company’s operating from acquisition or disposition activities.

Accounting for Grants

Income Taxes

Credit Concentrations and Significant Customers

Foreign Currency Gains and Losses

Employee Benefit Plans

Fair Value of Financial Instruments


Level 1	Quoted prices in active markets for identical assets or liabilities as of the reporting date. Active markets are those in which transactions for the asset and liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis. Level 1 assets and liabilities include money market funds, debt and equity securities and derivative contracts that are traded in an active exchange market.
Level 2	Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 2 assets and liabilities include debt securities with quoted prices that are traded less frequently than exchange‑traded instruments and derivative contracts whose value is determined using a pricing model with inputs that are observable in the market or can be derived principally from or corroborated by observable market data. This category generally includes corporate obligations and non‑exchange traded derivative contracts.
Level 3	Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments and intangible assets that have been impaired whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation.

Assets and liabilities of the Company measured at fair value on a recurring basis as of December 31, 2018 and 2017 are summarized as follows:


			December 31, 2018
			Significant Other
	Quoted Prices in		Observable
	Active Markets		Inputs
Description	(Level 1)		(Level 2)		Total
Certificates of deposit	$	—	$	380	$	380
Money market funds		2,266		—		2,266
Short term investments		393		—		393
Commercial paper		—		13,972		13,972
Interest rate swap		—		140		140
Total assets and liabilities measured at fair value	$	2,659	$	14,492	$	17,151


	December 31, 2017
			Significant Other
	Quoted Prices in		Observable
	Active Markets		Inputs
Description	(Level 1)		(Level 2)		Total
Certificates of deposit	$	—	$	391	$	391
Money market funds		2,894		—		2,894
Short term investments		555		6,521		7,076
Commercial paper		—		49,954		49,954
Interest rate swap		—		52		52
Total assets and liabilities measured at fair value	$	3,449	$	56,918	$	60,367

Certificate of Deposit

Money Market Funds

Short Term Investments and Commercial Paper

Other Fair Value Disclosures

Net Income Per Share

The reconciliation from basic to diluted weighted average shares of Common Stock outstanding is as follows (in thousands):


	Year ended December 31,
	2018	2017	2015
Basic weighted-average shares of common stock outstanding	15,988	16,138	16,131
Stock options	54	72	96
Diluted weighted-average shares of common stock outstanding	16,042	16,210	16,227

The following notes the number of potential shares of common stock not included in the above calculation because the effects of such were anti‑dilutive (in thousands of shares):


	For the Year Ended
	December 31,
	2018	2017	2016
Stock options	5	7	5
Total	5	7	5

Stock-Based Compensation

Stock‑Based Compensation

Stock‑based compensation expense is recognized within general and administrative expenses within the consolidated income statements.

Business combinations

Business Combinations

Recent Accounting Pronouncements


		Statement of Cash flows

		Year ended December 31, 2017						Year ended December 31, 2016
		Reported		Change		Under previous guidance		Reported		Change		Under previous guidance
Net cash provided by operating activities	$	145,725	$	—	$	145,725	$	111,656	$	—	$	111,656
Net cash used in investing activities		(172,318)		5,525		(166,793)		(296,580)		(12,108)		(308,688)
Net cash used in financing activities		(42,101)		1,178		(40,923)		75,334		—		75,334
Effect of foreign currency exchange rates on total cash		226		—		226		(626)		—		(626)
Net change in total cash	$	(68,468)	$	6,703	$	(61,765)	$	(110,216)	$	(12,108)	$	(122,324)
Total cash, beginning of period		288,358		(18,637)		269,721		398,574		(6,529)		392,045
Total cash, end of period	$	219,890	$	(11,934)	$	207,956	$	288,358	$	(18,637)	$	269,721

ORGANIZATION AND BUSINESS OPERATIONS (Tables)

12 Months Ended

Dec. 31, 2018

ORGANIZATION AND BUSINESS OPERATIONS

Schedule of the operating activities of the Company's principal subsidiaries, the segments in which the Company reports its revenue and markets served


Segment	Services	Markets	Tradenames
U.S. Telecom	Wireless	United States (rural markets)	Choice, Choice NTUA Wireless, Commnet, WestNet, Geoverse
	Wireline	United States	Essextel, Deploycom
International Telecom	Wireline	Bermuda, Cayman Islands, Guyana, U.S. Virgin Islands	Fireminds, GTT+, One, Logic, Viya
	Wireless	Bermuda, Guyana, U.S. Virgin Islands	GTT+, One, Viya
	Video Services	Bermuda, Cayman Islands, U.S. Virgin Islands	Logic, One, Viya
Renewable Energy	Solar	India	Vibrant Energy

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2018

Schedule of changes in accumulated other comprehensive income (loss), by component

Changes in accumulated other comprehensive income (loss), by component, were as follows (in thousands):


	Projected
	Pension
	Benefit		Translation
	Obligation		Adjustment		Other		Total

Balance at December 31, 2015	$	(3,481)	$	(223)	$	—	$	(3,704)
Adjust funded status of pension plan, net of tax of $0.7 million		5,251		—		—		5,251
Foreign currency translation adjustment		—		(687)		—		(687)
Unrealized gain on marketable securities		—		—		868		868
Balance at December 31, 2016		1,770		(910)		868		1,728
Adjust funded status of pension plan, net of tax of $0.7 million		1,357		—		—		1,357
Foreign currency translation adjustment		—		1,265		—		1,265
Reclassifications of gains on sale of marketable securities to net income		—		—		(1,044)		(1,044)
Unrealized gain on marketable securities		—		—		440		440
Balance at December 31, 2017		3,127		355		264		3,746
Adjust funded status of pension plan, net of tax of $0.6 million		(840)		—		—		(840)
Foreign currency translation adjustment		—		(4,390)		—		(4,390)
Adoption of ASU 2016-01		—		—		(203)		(203)
Interest rate swap		—		—		78		78
Balance at December 31, 2018	$	2,287	$	(4,035)	$	139	$	(1,609)

Schedule of reclassification from accumulated other comprehensive income

Amounts reclassified from accumulated other comprehensive income to net income were as follows (in thousands):


		2018		2017		2016
Pension and other postretirement benefit plans	$	54	$	716	$	1,300
Realized gains on marketable securities		—		(1,044)		—
Total	$	54	$	(328)	$	1,300

Schedule of assets and liabilities of the Company measured at fair value on a recurring basis


			December 31, 2018
			Significant Other
	Quoted Prices in		Observable
	Active Markets		Inputs
Description	(Level 1)		(Level 2)		Total
Certificates of deposit	$	—	$	380	$	380
Money market funds		2,266		—		2,266
Short term investments		393		—		393
Commercial paper		—		13,972		13,972
Interest rate swap		—		140		140
Total assets and liabilities measured at fair value	$	2,659	$	14,492	$	17,151


	December 31, 2017
			Significant Other
	Quoted Prices in		Observable
	Active Markets		Inputs
Description	(Level 1)		(Level 2)		Total
Certificates of deposit	$	—	$	391	$	391
Money market funds		2,894		—		2,894
Short term investments		555		6,521		7,076
Commercial paper		—		49,954		49,954
Interest rate swap		—		52		52
Total assets and liabilities measured at fair value	$	3,449	$	56,918	$	60,367

Schedule of reconciliation from basic to diluted weighted average common shares outstanding

The reconciliation from basic to diluted weighted average shares of Common Stock outstanding is as follows (in thousands):


	Year ended December 31,
	2018	2017	2015
Basic weighted-average shares of common stock outstanding	15,988	16,138	16,131
Stock options	54	72	96
Diluted weighted-average shares of common stock outstanding	16,042	16,210	16,227

Schedule of anti-dilutive potential shares that were excluded from the computation of diluted weighted average shares outstanding

The following notes the number of potential shares of common stock not included in the above calculation because the effects of such were anti‑dilutive (in thousands of shares):


	For the Year Ended
	December 31,
	2018	2017	2016
Stock options	5	7	5
Total	5	7	5

Accounting Standards Update 2016-15 and 2018-18

Summary of changes to the Company’s financial statements as a result of the adoption

The adoption of ASU 2016-15 and ASU 2016-18 impacted the Company’s cash flows for the years ended December 31, 2017 and December 31, 2016 as indicated below (amounts in thousands):


		Statement of Cash flows

		Year ended December 31, 2017						Year ended December 31, 2016
		Reported		Change		Under previous guidance		Reported		Change		Under previous guidance
Net cash provided by operating activities	$	145,725	$	—	$	145,725	$	111,656	$	—	$	111,656
Net cash used in investing activities		(172,318)		5,525		(166,793)		(296,580)		(12,108)		(308,688)
Net cash used in financing activities		(42,101)		1,178		(40,923)		75,334		—		75,334
Effect of foreign currency exchange rates on total cash		226		—		226		(626)		—		(626)
Net change in total cash	$	(68,468)	$	6,703	$	(61,765)	$	(110,216)	$	(12,108)	$	(122,324)
Total cash, beginning of period		288,358		(18,637)		269,721		398,574		(6,529)		392,045
Total cash, end of period	$	219,890	$	(11,934)	$	207,956	$	288,358	$	(18,637)	$	269,721

REVENUE RECOGNITION (Tables)

12 Months Ended

Dec. 31, 2018

Revenue Recognition

Summary of contracts asset and liabilities

Contract assets and liabilities consisted of the following (amounts in thousands):


		December 31, 2018		January 1, 2018		$ Change	% Change
Contract asset – current	$	1,900	$	1,176	$	724	62%
Contract asset – noncurrent		802		453		349	77%
Contract liabilities		(13,787)		(9,912)		(3,875)	39%
Net contract liability	$	(11,085)	$	(8,283)	$	(2,802)	34%

ASU 2014-09

Revenue Recognition

Summary of changes to the Company’s financial statements as a result of the adoption of ASC 606

The tables below identify changes to the Company’s financial statements as of December 31, 2018 and for the year then ended as a result of the adoption of ASC 606 as compared to previous revenue guidance (amounts in thousands):


Balance Sheet - December 31, 2018
		Reported		Change		Under previous guidance
Prepayments and other current assets	$	37,855	$	(3,319)	$	34,536

Total current assets		275,765		(3,319)		272,446

Other assets		37,708		(1,785)		35,923

Total assets		1,107,304		(5,104)		1,102,200

Advance payments and deposits		20,574		(337)		20,237
Accrued taxes		31,795		(131)		31,664

Total current liabilities		140,650		(468)		140,182

Deferred income taxes		10,276		(302)		9,974

Total liabilities		283,980		(770)		283,210

Retained earnings		563,593		(2,481)		561,112
Minority interest		127,937		(1,853)		126,084

Total equity		823,324		(4,334)		818,990

Total liabilities and equity	$	1,107,304	$	(5,104)	$	1,102,200


		Statement of Operations

		Year ended December 31, 2018

		Reported		Change		Under previous guidance
Wireless revenue	$	198,824	$	(1,075)	$	197,749

Total revenue		451,207		(1,075)		450,132

Sales, marketing and customer service		35,207		755		35,962

Total operating expenses		390,184		755		390,939

Income from operations		61,023		(1,830)		59,193
Income before taxes		53,742		(1,830)		51,912
Income tax provision		18,870		(131)		18,739

Net income		34,872		(1,699)		33,173
Net income attributable to non-controlling interests		(15,057)		706		(14,351)
Net income attributable to ATN International, Inc. stockholders	$	19,815	$	(993)	$	18,822


		Statement of Comprehensive Loss

		Year ended December 31, 2018

		Reported		Change		Under previous guidance
Net income	$	34,872	$	(1,699)	$	33,173
Other comprehensive loss, net of tax		(5,152)		—		(5,152)
Comprehensive loss		29,720		(1,699)		28,021
Less: Comprehensive income attributable to non-controlling interests		(15,057)		706		(14,351)
Comprehensive income (loss) attributable to ATN International, Inc.	$	14,663	$	(993)	$	13,670


Statement of Cash Flows - Year ended December 31, 2018

		Reported		Change (1)		Under previous guidance
Net income	$	34,872	$	(1,699)	$	33,173

Materials and supplies, prepayments and other current assets	$	5,924	$	1,243	$	7,167
Accrued taxes		29,089		(131)		28,958
Accounts payable and accrued liabilities, advance payments and deposits and other current liabilities		(7,044)		(107)		(7,151)
Other assets	$	(238)	$	694	$	456

(1)

The adoption of ASC 606 had no impact on operating cash flows, investing cash flows, financing cash flows or net change in total cash.

ACQUISITIONS AND DISPOSITIONS (Tables)

12 Months Ended

Dec. 31, 2018

Acquisitions and Dispositions

Schedule of pro forma results of operations


		Year ended December 31,
(unaudited)		2016				2015
		As		Pro-		As		Pro-
		Reported		Forma		Reported		Forma
Revenue	$	457,003	$	535,628	$	355,369	$	546,589
Net income (loss) attributable to ATN International, Inc. Stockholders		12,101		14,660		16,940		(97,102)
Earnings per share:
Basic		0.75		0.91		1.06		(6.06)
Diluted		0.75		0.90		1.05		(6.02)

Sovernet

Acquisitions and Dispositions

Schedule of assets and liabilities transferred

The table below identifies the assets and liabilities transferred (amounts in thousands):


Consideration Received	$	25,926
Assets and liabilities disposed
Cash		1,821
Accounts receivable		1,696
Inventory		639
Prepayments and other current assets		1,034
Property, plant and equipment		25,294
Other assets		288
Accounts payable and accrued liabilities		(1,718)
Advance payments and deposits		(1,897)
Net assets disposed		27,157

Consideration less net assets disposed		(1,231)

Transaction costs		(1,156)

Loss	$	(2,387)

U.S. Solar Operations

Acquisitions and Dispositions

Schedule of assets and liabilities transferred

The table below identifies the assets and liabilities transferred (amounts in thousands):


Consideration Received	$	65,286
Assets and liabilities disposed
Cash		3,049
Accounts receivable		1,248
Prepayments and other current assets		801
Property, plant and equipment		94,678
Restricted cash		8,407
Other assets		38
Current portion of long-term debt		(6,992)
Accounts payable and accrued liabilities		(938)
Accrued taxes		586
Long-term debt, excluding current portion		(48,038)
Net assets disposed		52,839

Consideration less net assets disposed		12,447

Transaction costs		(2,133)

Gain	$	10,314

One Communications (formerly Keytech) and BDC

Acquisitions and Dispositions

Schedule of assessment of total acquisition costs to net assets based on acquisition date fair values


Consideration Transferred
Cash consideration - One Communications	$	34,518
Cash consideration - BDC		7,045
Total consideration transferred		41,563
Non-controlling interests - One Communications		32,909
Total value to allocate	$	74,472
Value to allocate - One Communications	$	67,427
Value to allocate - BDC		7,045

Purchase price allocation One Communications:
Cash		8,185
Accounts receivable		6,451
Other current assets		3,241
Property, plant and equipment		100,892
Identifiable intangible assets		10,590
Other long term assets		3,464
Accounts payable and accrued liabilities		(16,051)
Advance payments and deposits		(6,683)
Current debt		(6,429)
Long term debt		(28,929)
Net assets acquired		74,731

Gain on One Communications bargain purchase	$	7,304

Purchase price allocation BDC:
Carrying value of BDC non-controlling interest acquired		2,940

Excess of purchase price paid over carrying value of non-controlling interest acquired	$	4,105

Viya (formerly Innovative)

Acquisitions and Dispositions

Schedule of assessment of total acquisition costs to net assets based on acquisition date fair values


Consideration Transferred	$	111,860
Non-controlling interests		221
Total value to allocate		112,081
Purchase price allocation:
Cash		4,229
Accounts receivable		6,553
Materials & supplies		6,533
Other current assets		1,927
Property, plant and equipment		108,284
Telecommunication licenses		7,623
Goodwill		20,586
Intangible assets		7,800
Other assets		4,394
Accounts payable and accrued liabilities		(15,971)
Advance payments and deposits		(7,793)
Deferred tax liability		(2,935)
Pension and other postretirement benefit liabilities		(29,149)
Net assets acquired	$	112,081

Vibrant Energy

Acquisitions and Dispositions

Schedule of assessment of total acquisition costs to net assets based on acquisition date fair values

The table below represents the allocation of the consideration transferred to the net assets of Vibrant Energy based on their acquisition date fair values (in thousands):


Consideration Transferred	$	6,193
Purchase price allocation:
Cash		136
Prepayments and other assets		636
Property, plant and equipment		7,321
Goodwill		3,279
Accounts payable and accrued liabilities		(5,179)
Net assets acquired	$	6,193

- Definition

Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

+ References

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+ Details

ACCOUNTS RECEIVABLE (Tables)

12 Months Ended

Dec. 31, 2018

ACCOUNTS RECEIVABLE:

Schedule of accounts receivable

As of December 31, 2018 and 2017, accounts receivable consist of the following (in thousands):


	2018		2017
Retail	$	13,785	$	19,530
Wholesale		40,982		39,022
Accounts receivable		54,767		58,552
Less: allowance for doubtful accounts		(16,462)		(15,023)
Total accounts receivable, net	$	38,305	$	43,529

FIXED ASSETS (Tables)

12 Months Ended

Dec. 31, 2018

FIXED ASSETS:

Schedule of property, plant and equipment

As of December 31, 2018 and 2017, property, plant and equipment consisted of the following (in thousands):


	Useful Life
	(in Years)	2018		2017
Telecommunications equipment and towers	5 -15	$	914,276	$	774,548
Solar assets	20-23		57		113,218
Office and computer equipment	3 -10		77,085		76,706
Buildings	15-39		48,900		48,058
Transportation vehicles	3 -10		15,039		12,221
Leasehold improvements	Shorter of useful life or lease term		2,033		2,864
Land	—		14,728		12,516
Furniture and fixtures	5 -10		9,200		6,674
Total property, plant and equipment			1,081,318		1,046,805
Construction in progress			107,598		123,001
Total property, plant and equipment			1,188,916		1,169,806
Less: Accumulated depreciation			(562,064)		(526,660)
Net fixed assets		$	626,852	$	643,146

GOODWILL AND INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2018

GOODWILL AND INTANGIBLE ASSETS

Schedule of changes in the carrying amount of goodwill, by operating segment

The table below disclosed goodwill recorded in each of the Company’s segments and accumulated impairment changes (in thousands):


	U.S.		International		Renewable
	Telecom		Telecom		Energy		Consolidated
Balance at December 31, 2016	$	35,268	$	24,326	$	3,279	$	62,873
Acquisitions		—		1,097		—		1,097
Balance at December 31, 2017		35,268		25,423		3,279		63,970
Acquisitions		—		—		—		—
Balance at December 31, 2018	$	35,268	$	25,423	$	3,279	$	63,970

	U.S.		International		Renewable
	Telecom		Telecom		Energy		Consolidated
Balance at December 31, 2017
Gross	$	35,268	$	25,423	$	3,279	$	63,970
Accumulated Impairment		—		—		—		—
Net		35,268		25,423		3,279		63,970
Balance at December 31, 2018
Gross		35,268		25,423		3,279		63,970
Accumulated Impairment		—		—		—		—
Net	$	35,268	$	25,423	$	3,279	$	63,970

Schedule of changes in the carrying amount of the Company's telecommunications licenses, by operating segment

The changes in the carrying amount of the Company’s telecommunications licenses, by operating segment, for the three years ended December 31, 2018 were as follows (in thousands):


	U.S.		Int'l
	Telecom		Telecom		Consolidated
Balance at December 31, 2016	$	24,944	$	23,347	$	48,291
Acquired licenses		47,692		—		47,692
Dispositions		(31)		—		(31)
Balance at December 31, 2017	$	72,605	$	23,347	$	95,952
Acquired licenses		485		—		485
Dispositions		(2,750)		—		(2,750)
Balance at December 31, 2018	$	70,340	$	23,347	$	93,687

Schedule of future amortization of customer relationships, in Island Wireless segment

Future amortization of customer relationships, in its International Telecom segment, is as follows (in thousands):


	Future Amortization
2019	$	1,897
2020		1,528
2021		1,300
2022		1,143
2023		828
Thereafter		2,627
Total	$	9,323

EQUITY (Tables)

12 Months Ended

Dec. 31, 2018

EQUITY

Schedule of shares repurchased


		Aggregate
	Shares	Cost		Average
Year ended December 31,	Repurchased	(in thousands)		Repurchase Price
2018	30,427	$	1,577	$	51.82
2017	201,932		10,636		52.67
2016	32,407		2,195		64.72

Schedule of repurchases of shares from employees to satisfy tax withholding and stock exercise obligations


		Aggregate
	Shares	Cost		Average
Year ended December 31,	Repurchased	(in thousands)		Repurchase Price
2018	141,180	$	10,859	$	76.76
2017	32,814		2,348		71.54
2016	38,279		2,775		72.50

Summary of stock option activity


	Year Ended December 31, 2018
				Weighted Average
		Weighted Avg.		Remaining
	Number of	Exercise		Contractual	Aggregate
	Options	Price		Term (Years)	Intrinsic Value
Outstanding at January 1, 2018	200,021	$	41.76
Granted	—		—
Exercised	(158,021)		39.95
Outstanding at December 31, 2018	42,000		48.61	4.1	$	823,515
Vested and expected to vest at December 31, 2018	42,000		48.61	4.1	$	962,840
Exercisable at December 31, 2018	33,250		46.76	3.0	$	823,515


	Year Ended December 31, 2017
				Weighted Average
				Remaining
	Number of	Weighted Avg.		Contractual	Aggregate
	Options	Exercise Price		Term (Years)	Intrinsic Value
Outstanding at January 1, 2017	225,822	$	39.77
Granted	10,000		52.97
Exercised	(35,801)		32.29
Outstanding at December 31, 2017	200,021		41.76	3.6	$	2,780,253
Vested and expected to vest at December 31, 2017	200,021		41.76	3.6	$	2,780,253
Exercisable at December 31, 2017	187,521		40.77	3.6	$	2,757,353

Summary of information relating to options granted and exercised

The following table summarizes information relating to options granted and exercised during the years ended December 31, 2018, 2017 and 2016 (in thousands, except fair value of options granted data):


	2018		2017		2016
Weighted-average fair value of options granted	$	—	$	13.77	$	—
Aggregate intrinsic value of options exercised		5,927		936		1,591
Cash proceeds received upon exercise of options		72		1,030		649
Excess tax benefits from share-based compensation		—		—		591

Schedule of weighted-average assumptions using Black-Scholes option-pricing model for estimating fair value of each option granted


	2017

Risk-free interest rate	1.79	%
Expected dividend yield	1.28	%
Expected life	4.00	years
Expected volatility	34.01	%

Summary of restricted stock activity

The following table summarizes restricted stock activity during the year ended December 31, 2018:


		Weighted Avg.
	Shares	Fair Value
Unvested as of January 1, 2018	214,938	$	68.62
Granted	111,474		59.52
Forfeited	(31,327)		66.53
Vested and issued	(94,432)		66.27
Unvested as of December 31, 2018	200,653	$	65.21

The following table summarizes restricted stock activity during the year ended December 31, 2017:


		Weighted Avg.
	Shares	Fair Value
Unvested as of January 1, 2017	229,040	$	67.13
Granted	95,095		68.09
Forfeited	(12,074)		69.71
Vested and issued	(97,123)		64.01
Unvested as of December 31, 2017	214,938	$	68.62

INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2018

INCOME TAXES

Schedule of components of income before income taxes

The components of income before income taxes for the years ended December 31, 2018, 2017 and 2016 are as follows (in thousands):


	2018		2017		2016
Domestic	$	28,917	$	25,232	$	28,047
Foreign		24,825		22,321		17,327
Total	$	53,742	$	47,553	$	45,374

Schedule of reconciliation from the tax computed at statutory income tax rates to the Company's income tax expense

The following is a reconciliation from the tax computed at statutory income tax rates to the Company’s income tax expense for the years ended December 31, 2018, 2017, and 2016 (in thousands):


	2018		2017		2016
Tax computed at statutory U.S. federal income tax rates	$	11,286	$	16,644	$	15,782
Non-controlling interest		(1,114)		(2,887)		(2,893)
Foreign tax rate differential		(2,716)		(6,621)		(3,074)
Over (under) provided in prior periods		(4,683)		(18)		1,069
Nondeductible expenses		1,610		929		1,134
Goodwill Impairment		—		—		2,622
Capitalized transactions costs		62		53		3,138
Change in tax reserves		10,657		4,433		2,561
State Taxes, net of federal benefit		1,674		1,075		1,853
Change in valuation allowance		1,539		6,137		(7,292)
Foreign tax credit expiration		—		—		4,179
Refund Claim for Domestic Production Deduction		235		(3,382)		—
Tax Cuts and Jobs Act of 2017		(148)		(10,639)		—
Capital loss		15		(6,990)		—
Other, net		453		(75)		2,081
Total Income Tax Expense	$	18,870	$	(1,341)	$	21,160

Schedule of components of income tax expense (benefit)

The components of income tax expense (benefit) for the years ended December 31, 2018, 2017 and 2016 are as follows (in thousands):

\
	2018		2017		2016
Current:
United States—Federal	$	24,546	$	375	$	15,763
United States—State		4,506		500		505
Foreign		13,060		11,289		10,528
Total current income tax expense	$	42,112	$	12,164	$	26,796
Deferred:
United States—Federal	$	(17,947)	$	(10,892)	$	(1,880)
United States—State		(2,832)		950		(291)
Foreign		(2,463)		(3,563)		(3,465)
Total deferred income tax expense (benefit)	$	(23,242)	$	(13,505)	$	(5,636)
Consolidated:
United States—Federal	$	6,599	$	(10,517)	$	13,883
United States—State		1,674		1,450		214
Foreign		10,597		7,726		7,063
Total income tax expense (benefit)	$	18,870	$	(1,341)	$	21,160

Schedule of significant components of deferred tax assets and liabilities

The significant components of deferred tax assets and liabilities are as follows as of December 31, 2018 and 2017 (in thousands):


	2018		2017
Deferred tax assets:
Receivables reserve	$	3,087	$	1,524
Temporary differences not currently deductible for tax		9,035		7,869
Deferred compensation		784		1,446
Pension		635		245
Net operating losses		29,496		26,685
Tax Credits		645		8,969
Total deferred tax asset		43,682		46,738
Deferred tax liabilities:
Property, plant and equipment, net		14,608		35,630
Intangible assets, net		5,959		5,817
Total deferred tax liabilities		20,567		41,447

Valuation allowance		(31,442)		(35,829)

Net deferred tax liabilities	$	(8,327)	$	(30,538)

Schedule of deferred tax assets and liabilities

Deferred tax assets and liabilities are reflected in the accompanying consolidated balance sheets as follows (in thousands):


	2018		2017
Deferred tax assets:
Current	$	—	$	—
Long term		1,949		1,194
Total deferred tax asset	$	1,949	$	1,194
Deferred tax liabilities:
Current	$	—	$	—
Long term		(10,276)		(31,732)
Total deferred tax liabilities	$	(10,276)	$	(31,732)
Net deferred tax liabilities	$	(8,327)	$	(30,538)

Schedule of activity related to unrecognized tax benefits

The following shows the activity related to unrecognized tax benefits (not including interest and penalty) during the three years ended December 31, 2018 (in thousands):


Gross unrecognized tax benefits at December 31, 2015	$	17,216
Increase in unrecognized tax benefits taken during a prior period		561
Increase in unrecognized tax benefits taken during the current period		2,321
Lapse in statute of limitations		(1,673)
Settlements		(521)
Gross unrecognized uncertain tax benefits at December 31, 2016		17,904
Increase in unrecognized tax benefits taken during a prior period		—
Increase in unrecognized tax benefits taken during the current period		3,394
Lapse in statute of limitations		(2)
Settlements		(335)
Gross unrecognized uncertain tax benefits at December 31, 2017		20,961
Increase in unrecognized tax benefits taken during a prior period		7,293
Increase in unrecognized tax benefits taken during the current period		3,408
Lapse in statute of limitations		(1,430)
Settlements		—
Gross unrecognized uncertain tax benefits at December 31, 2018	$	30,232

RETIREMENT PLANS (Tables)

12 Months Ended

Dec. 31, 2018

RETIREMENT PLANS

Schedule of weighted-average rates assumed in the actuarial calculations for the pension plan and other postretirement benefit plans


	2018		2017		2016
Discount Rate – Pension Benefit Obligation	4.7	%	4.2	%	4.6	%
Discount Rate – Pension Benefit Cost	4.3	%	4.6	%	4.3	%
Discount Rate – Postretirement Benefit Obligation	4.5	%	3.9	%	4.3	%
Discount Rate – Postretirement Benefit Cost	3.9	%	4.3	%	3.9	%
Annual salary increase	6.5	%	6.5	%	6.5	%
Expected long-term return on plan assets	6.1	%	6.1	%	6.3	%

Schedule of effect of one-percentage point increase in assumed health care cost trend rates of net periodic postretirement health care benefit cost


	2018						2017
	Accumulated postretirement benefit obligation			Service cost plus interest cost			Accumulated postretirement benefit obligation			Service cost plus interest cost

At trend		4,013			308			5,308			389
At trend + 1%		4,305			338			5,723			429
Dollar Impact		292			30			415			40
Percentage Impact		7.3	%		9.7	%		7.8	%		10.3	%
At trend – 1%		3,755			282			4,944			355
Dollar Impact		(258)			(26)			(364)			(34)
Percentage Impact		(6.4)	%		(8.4)	%		(6.9)	%		(8.7)	%

Schedule of changes during the year in the projected benefit obligations and in the fair value of plan assets

Changes during the year in the projected benefit obligations and in the fair value of plan assets are as follows for 2018 and 2017 (in thousands):


	2018				2017

	Pension Benefits		Postretirement Benefits		Pension Benefits		Postretirement Benefits
Projected benefit obligations:
Balance at beginning of year:	$	80,355	$	5,307	$	76,119	$	5,108
Service cost		1,794		147		1,676		183
Interest cost		3,279		161		3,388		206
Benefits and settlements paid		(4,524)		(360)		(3,942)		(367)
Actuarial (gain) loss		(4,295)		(272)		3,114		177
Experience (gain) loss		291		(971)		—		—
Balance at end of year	$	76,900	$	4,012	$	80,355	$	5,307
Plan net assets:
Balance at beginning of year:	$	80,892	$	—	$	75,331	$	—
Actual return on plan assets		(730)		—		8,789		—
Company contributions		1,830		360		842		367
Benefits and settlements paid		(4,462)		(360)		(4,070)		(367)
Balance at end of year	$	77,530	$	—	$	80,892	$	—
Over/ (Under) funded status of plan	$	630	$	(4,012)	$	537	$	(5,307)

Schedule of funded status of the Company’s pension and other retirement benefit plans

The funded status of the Company’s pension and other retirement benefit plans is below (in thousands):


	2018						2017

	GTT Pension Benefit		Viya Pension Benefit		Postretirement Benefits		GTT Pension Benefit		Viya Pension Benefit		Postretirement Benefits

Projected benefit obligation	$	14,712	$	62,188	$	4,012	$	13,205	$	67,150	$	5,307
Plan Net Assets		14,105		63,425		—		10,307		70,585		—
Over/ (Under) funded status of plan	$	(607)	$	1,237	$	(4,012)	$	(2,898)	$	3,435	$	(5,307)

Schedule of fair values for the pension plan's net assets, by asset category

The fair values for the pension plan’s net assets, by asset category, at December 31, 2018 are as follows (in thousands):


Asset Category	Total		Level 1		Level 2		Level 3
Cash, cash equivalents, money markets and other	$	5,173	$	5,173	$	—	$	—
Common stock		23,052		18,760		4,292		—
Mutual funds - fixed income		16,444		—		16,444		—
Mutual funds - equities		13,099		4,748		8,351		—
Fixed income securities		18,095		—		18,095		—
Other		1,667		1,177		—		490
Total	$	77,530	$	29,858	$	47,182	$	490

The fair values for the pension plan’s net assets, by asset category, at December 31, 2017 are as follows (in thousands):


Asset Category	Total		Level 1		Level 2		Level 3
Cash, cash equivalents, money markets and other	$	6,363	$	6,363	$	—	$	—
Common stock		28,467		25,312		3,155		—
Mutual funds - equities		9,248		9,248		—		—
Exchange traded funds - equities		904		904		—		—
Fixed income securities		35,414		—		35,414		—
Annuities		496		—		—		496
Total	$	80,892	$	41,827	$	38,569	$	496

Schedule of weighted-average asset allocations, by asset category


	2018		2017
Cash, cash equivalents, money markets and other	7	%	8	%
Common stock	30		35
Mutual funds - fixed income	21		—
Mutual funds - equities	17		11
Fixed income securities	23		44
Other	2		2
Total	100	%	100	%

Schedule of amounts recognized on the Company's consolidated balance sheets

Amounts recognized on the Company’s consolidated balance sheets consist of (in thousands):


	As of December 31,
	2018				2017
	Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits

Accrued and current liabilities	$	—	$	271	$	—	$	392
Other Liabilities		744		3,742		2,898		4,915
Other Assets		1,375		—		3,435		—
Accumulated other comprehensive income, net of tax		938		1,350		2,953		174

Schedule of amounts recognized in accumulated other comprehensive loss

Amounts recognized in accumulated other comprehensive loss consist of (in thousands):


	As of December 31,
	2018				2017
	Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits

Net actuarial gain	$	30	$	1,350	$	1,408	$	174
Accumulated other comprehensive income, pre-tax		30		1,350		1,408		174
Accumulated other comprehensive income, net of tax		938		1,350		2,953		174

Schedule of components of the plan's net periodic pension cost

Components of the plan’s net periodic pension cost are as follows for the years ended December 31, 2018, 2017 and 2016 (in thousands):


	2018				2017				2016
	Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits

Service cost	$	1,794	$	147	$	1,676	$	183	$	1,308	$	97
Interest cost		3,279		161		3,388		206		2,002		97
Expected return on plan assets		(4,835)		—		(4,470)		—		(2,024)		—
Amortization of actuarial (gain) loss		121		(67)		716		—		1,271		—
Curtailment		—		—		—		—		128		—
Net periodic pension cost	$	359	$	241	$	1,310	$	389	$	2,685	$	194

Schedule of estimated benefits

The following estimated benefits, which reflect expected future service, as appropriate, are expected to be paid over the next ten years as indicated below (in thousands):


	Pension		Postretirement
Fiscal Year	Benefits		Benefits
2019	$	5,022	$	277
2020		4,292		255
2021		4,452		237
2022		5,079		261
2023		4,355		236
2024-2028		23,534		1,535
	$	46,734	$	2,801

COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2018

COMMITMENTS AND CONTINGENCIES

Schedule of the Company's obligation for payments under leases

The Company’s obligations for payments under these leases are as follows at December 31, 2018 (in thousands):


2019	$	21,941
2020		18,813
2021		12,406
2022		8,466
2023		4,142
Thereafter		5,991
Total obligations under operating leases	$	71,759

SEGMENT REPORTING (Tables)

12 Months Ended

Dec. 31, 2018

SEGMENT REPORTING

Schedule of information for each operating segment

The following tables provide information for each operating segment (in thousands):


For the Year Ended December 31, 2018

	U.S.		International		Renewable		Corporate and
	Telecom		Telecom		Energy		Other (1)		Consolidated
Revenue
Wireless	$	108,878	$	89,946	$	—	$	—	$	198,824
Wireline		6,602		223,623		—		—		230,225
Renewable Energy		—		—		22,158		—		22,158
Total Revenue		115,480		313,569		22,158		—		451,207
Depreciation and amortization		24,615		48,889		6,589		5,626		85,719
Non-cash stock-based compensation		—		88		105		6,227		6,420
Operating income (loss)		36,813		45,022		13,440		(34,252)		61,023


For the Year Ended December 31, 2017

	U.S.		International		Renewable		Corporate and
	Telecom		Telecom		Energy		Other (1)		Consolidated
Revenue
Wireless	$	143,028	$	89,473	$	—	$	—	$	232,501
Wireline		12,695		215,132		—		—		227,827
Renewable Energy		—		—		20,865		—		20,865
Total Revenue		155,723		304,605		20,865		—		481,193
Depreciation and amortization		25,601		50,007		6,668		4,658		86,934
Non-cash stock-based compensation		—		188		114		6,675		6,977
Operating income (loss)		55,317		28,308		5,179		(33,496)		55,308


For the Year Ended December 31, 2016

	U.S.		International		Renewable		Corporate and
	Telecom		Telecom		Energy		Other (1)		Consolidated
Revenue
Wireless	$	150,044	$	94,360	$	—	$	—	$	244,404
Wireline		26,683		163,915		—		—		190,598
Renewable Energy		—		—		22,001		—		22,001
Total Revenue		176,727		258,275		22,001		—		457,003
Depreciation and amortization		24,470		40,493		4,987		6,030		75,980
Non-cash stock-based compensation		—		22		114		6,274		6,410
Operating income (loss)		49,078		36,910		(246)		(34,472)		51,270



	U.S.		International		Renewable		Corporate and
	Telecom		Telecom		Energy		Other (1)		Consolidated
December 31, 2018
Cash, Cash equivalents, and Investments	$	19,118	$	32,390	$	62,678	$	78,043	$	192,229
Total current assets		36,801		75,304		80,553		83,107		275,765
Fixed assets, net		78,102		482,770		45,599		20,381		626,852
Goodwill		35,269		25,421		3,280		—		63,970
Total assets		172,634		622,454		130,427		181,789		1,107,304
Total current liabilities		15,783		82,575		3,465		38,827		140,650
Total debt		—		90,970		12		—		90,982
December 31, 2017
Cash, Cash equivalents, and Investments	$	19,585	$	110,700	$	8,120	$	76,627	$	215,032
Total current assets		40,975		190,396		18,060		93,497		342,928
Fixed assets, net		99,462		367,485		158,447		17,752		643,146
Goodwill		35,269		25,421		3,280		—		63,970
Total assets		200,142		629,007		192,406		184,050		1,205,605
Total current liabilities		41,248		91,887		14,754		13,816		161,705
Total debt		—		94,577		61,215		—		155,792


		Capital Expenditures

		U.S.		International			Renewable		Corporate and
Year ended December 31,		Telecom		Telecom			Energy		Other (1)		Consolidated
2018	$	13,389	$	160,013	(2)	$	4,515	$	8,004	$	185,921
2017		22,230		80,912			32,738		6,491		142,371

(1)

Reconciling items refer to corporate overhead expenses and consolidating adjustments.

(2)

Schedule of revenues and long lived assets by geographic location


	2018				2017				2016
			Long-Lived				Long-Lived				Long-Lived
	Revenues		Assets		Revenues		Assets		Revenues		Assets

U.S.	$	132,288	$	234,514	$	173,632	$	358,032	$	198,300	$	265,528
Guyana		102,056		151,084		93,524		129,909		91,653		132,609
U.S Virgin Islands		79,785		216,173		83,194		137,018		58,431		110,773
Bermuda		103,281		137,992		127,244		165,243		83,006		94,976
Other Foreign Countries		33,797		91,774		3,599		71,282		25,613		76,575
	$	451,207	$	831,538	$	481,193	$	861,484	$	457,003	$	680,461

QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2018

QUARTERLY FINANCIAL DATA (UNAUDITED)

Summary of the Company's quarterly results of operations

Following is a summary of the Company’s quarterly results of operations for the years ended December 31, 2018 and 2017 (in thousands):


	2018 Consolidated for the Three Months Ended
	March 31		June 30		September 30		December 31
Total revenue	$	104,475	$	117,788	$	121,138	$	107,806
Operating expenses		100,266		102,035		90,395		97,488
Income from operations		4,209		15,753		30,743		10,318
Other income (expense), net		(2,591)		(2,885)		(2,823)		1,018
Income from continuing operations before income taxes		1,618		12,868		27,920		11,336
Income taxes		3,921		2,088		7,010		5,851
Net income (loss)		(2,303)		10,780		20,910		5,485
Net income attributable to non-controlling interests, net of tax		(3,252)		(3,564)		(3,887)		(4,354)
Net income (loss) attributable to ATN International, Inc. stockholders	$	(5,555)	$	7,216	$	17,023	$	1,131
Net income (loss) per weighted average basic share attributable to ATN International, Inc. stockholders
Total		(0.35)		0.45		1.07		0.07
Net income (loss) per weighted average diluted share attributable to ATN International, Inc. stockholders
Total		(0.35)		0.45		1.07		0.07


	2017 Consolidated for the Three Months Ended
	March 31		June 30		September 30		December 31
Total revenue	$	128,115	$	123,245	$	122,132	$	107,701
Operating expenses		110,359		107,442		141,697		66,387
Income from operations		17,756		15,803		(19,565)		41,314
Other income (expense), net		(3,044)		(2,298)		(2,295)		(118)
Income (loss) from continuing operations before income taxes		14,712		13,505		(21,860)		41,196
Income taxes		3,128		2,596		(884)		(6,181)
Net income (loss)		11,584		10,909		(20,976)		47,377
Net income attributable to non-controlling interests, net of tax		(4,725)		(5,026)		(3,784)		(3,871)
Net income (loss) attributable to ATN International, Inc. stockholders	$	6,859	$	5,883	$	(24,760)	$	43,506
Net income (loss) per weighted average basic share attributable to ATN International, Inc. stockholders
Total		0.42		0.36		(1.53)		2.71
Net income (loss) per weighted average diluted share attributable to ATN International, Inc. stockholders
Total		0.42		0.36		(1.53)		2.71

ORGANIZATION AND BUSINESS OPERATIONS (Details)	12 Months Ended
ORGANIZATION AND BUSINESS OPERATIONS (Details)	Dec. 31, 2018 segment
ORGANIZATION AND BUSINESS OPERATIONS
Number of Operating Segments	3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Reclassifications (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)
Termination and access fees
Prior period corrections
Reclassification, decrease (increase) to expense	$ 4.9
Engineering and operations expenses
Prior period corrections
Reclassification, decrease (increase) to expense	(7.5)
Equipment expense
Prior period corrections
Reclassification, decrease (increase) to expense	(0.6)
Selling and marketing expense.
Prior period corrections
Reclassification, decrease (increase) to expense	0.8
General and administrative expense
Prior period corrections
Reclassification, decrease (increase) to expense	$ 2.4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash and Cash Equivalents (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash
Deposit with non-insured institutions	$ 25.2
Amount of restricted cash disposed	8.4
Guyanese dollars
Cash
Cash (in GYD)	$ 7.5	$ 12.6

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fixed Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Fixed assets
Accrued asset retirement obligations	$ 3.8	$ 3.9
Minimum
Fixed assets
Useful life	3 years
Maximum
Fixed assets
Useful life	39 years

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Acquired Intangibles (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Intangible assets
Impairment charges	$ 0	$ 0	$ 11,425
Customer relationships \| Minimum
Intangible assets
Estimated life	7 years
Customer relationships \| Maximum
Intangible assets
Estimated life	13 years

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated other comprehensive income (loss)
Beginning Balance	$ 688,727
Adjust funded status of pension plan, net of tax of $0.6, $0.7 and $0.7 million for the years December 31, 2018, 2017 and 2016 respectively	(840)	$ 1,357	$ 5,251
Foreign currency translation adjustment	(4,390)	1,265	(687)
Reclassifications of gains on sale of marketable securities to net income		(1,044)
Unrealized gain on marketable securities	78	440	868
Ending Balance	695,387	688,727
Adjust funded status of pension plan, tax	600	700	700
Accumulated Other Comprehensive Income/(Loss)
Accumulated other comprehensive income (loss)
Beginning Balance	3,746	1,728	(3,704)
Adjust funded status of pension plan, net of tax of $0.6, $0.7 and $0.7 million for the years December 31, 2018, 2017 and 2016 respectively	(840)	1,357	5,251
Foreign currency translation adjustment	(4,390)	1,265	(687)
Reclassifications of gains on sale of marketable securities to net income	(203)	(1,044)
Unrealized gain on marketable securities	78	440	868
Ending Balance	(1,609)	3,746	1,728
Pension and other postretirement benefit plans
Accumulated other comprehensive income (loss)
Beginning Balance	3,127	1,770	(3,481)
Adjust funded status of pension plan, net of tax of $0.6, $0.7 and $0.7 million for the years December 31, 2018, 2017 and 2016 respectively	(840)	1,357	5,251
Ending Balance	2,287	3,127	1,770
Translation Adjustment
Accumulated other comprehensive income (loss)
Beginning Balance	355	(910)	(223)
Foreign currency translation adjustment	(4,390)	1,265	(687)
Ending Balance	(4,035)	355	(910)
Investment
Accumulated other comprehensive income (loss)
Beginning Balance	264	868
Reclassifications of gains on sale of marketable securities to net income	(203)	(1,044)
Unrealized gain on marketable securities	78	440	868
Ending Balance	$ 139	$ 264	$ 868

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - AOCI reclassifications (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
AOIC reclassifications
Amounts reclassified from accumulated other comprehensive income, net of tax	$ 54	$ (328)	$ 1,300
Pension and other postretirement benefit plans
AOIC reclassifications
Amounts reclassified from accumulated other comprehensive income, net of tax	$ 54	716	$ 1,300
Investment
AOIC reclassifications
Amounts reclassified from accumulated other comprehensive income, net of tax		$ (1,044)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition (Details)	12 Months Ended
	Dec. 31, 2018
Minimum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Amortization period	2 years
Maximum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Amortization period	6 years
Renewable Energy \| Minimum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Term of power purchase agreements with various customers (in years)	10 years
Renewable Energy \| Maximum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Term of power purchase agreements with various customers (in years)	25 years

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Risk (Details) - Customer concentration - customer	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues
Credit concentrations and significant customers
Number of customers	1	2	2
Revenues \| Customer One
Credit concentrations and significant customers
Percentage of concentration risk	11.00%	13.00%	14.00%
Revenues \| Customer Two
Credit concentrations and significant customers
Percentage of concentration risk		10.00%	12.00%
Accounts receivable
Credit concentrations and significant customers
Number of customers	0	1
Percentage of concentration risk	10.00%	18.00%

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair value Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Fair value measurements
Equity investments with readily determinable fair values	$ 300	$ 600
Impairment or price adjustments for strategic investments	0
Loss on equity securities	300
Carrying Value
Fair value measurements
Long-term debt	91,000	155,800
Carrying Value \| Other Assets
Fair value measurements
Strategic investments	23,100	20,100
Level 2 \| Estimated Fair Value
Fair value measurements
Long-term debt	91,600	159,200
Recurring basis
Fair value measurements
Total assets and liabilities measured at fair value	17,151	60,367
Recurring basis \| Interest rate swap
Fair value measurements
Derivative liabilities	140	52
Recurring basis \| Certificate of deposit
Fair value measurements
Cash and cash equivalents	380	391
Recurring basis \| Money market funds
Fair value measurements
Cash and cash equivalents	2,266	2,894
Recurring basis \| Short Term Investments
Fair value measurements
Investments	393	7,076
Recurring basis \| Commercial paper
Fair value measurements
Cash and cash equivalents	13,972	49,954
Recurring basis \| Level 1
Fair value measurements
Total assets and liabilities measured at fair value	2,659	3,449
Recurring basis \| Level 1 \| Money market funds
Fair value measurements
Cash and cash equivalents	2,266	2,894
Recurring basis \| Level 1 \| Short Term Investments
Fair value measurements
Investments	393	555
Recurring basis \| Level 2
Fair value measurements
Total assets and liabilities measured at fair value	14,492	56,918
Recurring basis \| Level 2 \| Interest rate swap
Fair value measurements
Derivative liabilities	140	52
Recurring basis \| Level 2 \| Certificate of deposit
Fair value measurements
Cash and cash equivalents	380	391
Recurring basis \| Level 2 \| Short Term Investments
Fair value measurements
Investments		6,521
Recurring basis \| Level 2 \| Commercial paper
Fair value measurements
Cash and cash equivalents	$ 13,972	$ 49,954

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Anti-dilution (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Anti-dilutive common shares not included for computation of earnings per share
Basic weighted-average shares of common stock outstanding	15,988	16,138	16,131
Stock options (in shares)	54	72	96
Diluted weighted-average shares of common stock outstanding	16,042	16,210	16,227
Anti-dilutive potential shares excluded from the computation of diluted weighted average shares outstanding (in shares)	5	7	5
Stock options
Anti-dilutive common shares not included for computation of earnings per share
Anti-dilutive potential shares excluded from the computation of diluted weighted average shares outstanding (in shares)	5	7	5

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Stock-Based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Stock-based compensation
Non-cash stock-based compensation	$ 6,420	$ 6,977	$ 6,410
Stock options
Stock-based compensation
Vesting period	4 years
Non-cash stock-based compensation	$ 100	$ 100	$ 100
Restricted Stock
Stock-based compensation
Restricted shares of common stock issued (in shares)	111,474	95,095	100,005
Vesting period	4 years
Non-cash stock-based compensation	$ 6,100	$ 6,600	$ 6,200
Acquisitions \| Management
Stock-based compensation
Non-cash stock-based compensation	$ 200	$ 300	$ 100

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018	Jan. 01, 2017
Recent accounting pronouncements
Equity investments with readily determinable fair values	$ 300				$ 600				$ 300	$ 600
Additional paid-in capital	181,778				167,973				181,778	167,973
Accumulated other comprehensive income	(1,609)				3,746				(1,609)	3,746
Retained earnings	563,593				552,948				563,593	552,948
Net cash provided by operating activities									115,865	145,725	$ 111,656
Net cash used in investing activities									(87,319)	(172,318)	(296,580)
Net cash used in financing activities									(55,230)	(42,101)	75,334
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents									(299)	226	(626)
Net change in cash, cash equivalents, and restricted cash									(26,983)	(68,468)	(110,216)
Total cash, cash equivalents, and restricted cash, beginning of period				$ 219,890				$ 288,358	219,890	288,358	398,574
Total cash, cash equivalents, and restricted cash, end of period	192,907				219,890				192,907	219,890	288,358
Valuation allowance	31,442				35,829				31,442	35,829
Restricted cash	1,071				833				1,071	833
Operating Expenses	97,488	$ 90,395	$ 102,035	100,266	66,387	$ 141,697	$ 107,442	110,359	390,184	425,885	405,733
ASU 2016-01
Recent accounting pronouncements
Equity investments that do not have readily determinable fair values												$ 20,100
Equity investments with readily determinable fair values												600
ASU 2018-15 \| Early Adoption
Recent accounting pronouncements
Capitalized implementation costs	600								600
Amortization of implementation costs	$ 0
Change \| Accounting Standards Update 2016-15 and 2018-18
Recent accounting pronouncements
Net cash provided by operating activities										(5,525)
Net cash used in investing activities											12,108
Net cash used in financing activities										(1,178)
Net change in cash, cash equivalents, and restricted cash										(6,703)	12,108
Total cash, cash equivalents, and restricted cash, beginning of period				11,934				18,637	11,934	18,637	6,529
Total cash, cash equivalents, and restricted cash, end of period					11,934					11,934	18,637
Change \| ASU 2017-07
Recent accounting pronouncements
Operating Expenses										200	(1,400)
Other Income										200	(1,400)
Previously Reported \| Accounting Standards Update 2016-15 and 2018-18
Recent accounting pronouncements
Net cash provided by operating activities										145,725	111,656
Net cash used in investing activities										(166,793)	(308,688)
Net cash used in financing activities										(40,923)	75,334
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents										226	(626)
Net change in cash, cash equivalents, and restricted cash										(61,765)	(122,324)
Total cash, cash equivalents, and restricted cash, beginning of period				$ 207,956				$ 269,721	$ 207,956	269,721	392,045
Total cash, cash equivalents, and restricted cash, end of period					207,956					207,956	$ 269,721
Adjustment \| ASU 2016-01
Recent accounting pronouncements
Accumulated other comprehensive income												(200)
Retained earnings												$ 200
Adjustment \| ASU 2016-09
Recent accounting pronouncements
Additional paid-in capital													$ (300)
Retained earnings													$ 300
Adjustment \| ASU 2018-02 \| Early Adoption
Recent accounting pronouncements
Accumulated other comprehensive income					(800)					(800)
Retained earnings					800					800
Valuation allowance					$ 800					$ 800

Revenue Recognition - Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Contract Assets and Liabilities
Contract asset, current	$ 1,900	$ 1,176
Change in contract asset - current	$ 724
% of change in contract asset - current	62.00%
Contract asset, noncurrent	$ 802	453
Change in contract Asset – noncurrent	$ 349
% of change in contract Asset – noncurrent	77.00%
Contract liabilities	$ (13,787)	(9,912)
Change in contract liabilities	$ (3,875)
% of change in contract liabilities	39.00%
Net contract liability	$ (11,085)	$ (8,283)
Change in net contract liability	$ (2,802)
% of change in net contract liability	34.00%
Revenue recognized related to contract liability	$ 8,000
Amortization of contract assets	$ 1,800

Revenue Recognition - Contract Acquisition Costs (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($)
Contract Acquisition Costs
Amortization of contract acquisition cost	$ 1.6
Prepayments and other current assets
Contract Acquisition Costs
Short-term contract acquisition costs	1.4
Other assets
Contract Acquisition Costs
Long-term contract acquisition costs	$ 1.0

Revenue Recognition - Remaining Performance Obligations - (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-12-31 $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($)
Revenue Recognition
Transaction price allocated to unsatisfied performance obligations	$ 12.1
Period to satisfy the remaining performance obligations and recognize the transaction price	24 months
Right to invoice and wholly unsatisfied performance obligation practical expedients	true

Revenue Recognition - Impacts of adoption in the current period - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Contracts
Contract asset, current	$ 1,900		$ 1,176
Contract asset, noncurrent	802		453
Contract liability	13,787		9,912
Deferred income taxes	10,276		31,732
Retained earnings	563,593		552,948
Minority interest	127,937		$ 141,496
Prepayments and other current assets
Contracts
Short-term contract acquisition costs	1,400
Other assets
Contracts
Long-term contract acquisition costs	1,000
Change \| ASU 2014-09
Contracts
Contract asset		$ 1,600
Contract acquisition costs		1,500
Deferred income taxes	302	300
Retained earnings	2,481	1,500
Minority interest	$ 1,853	1,100
Change \| ASU 2014-09 \| Prepayments and other current assets
Contracts
Contract asset, current		1,200
Short-term contract acquisition costs		900
Change \| ASU 2014-09 \| Other assets
Contracts
Contract asset, noncurrent		400
Long-term contract acquisition costs		600
Change \| ASU 2014-09 \| Advance Payments And Deposits
Contracts
Contract liability		$ 200

Revenue Recognition - Impacts of adoption in the current period - BS (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CONDENSED CONSOLIDATED BALANCE SHEETS
Prepayments and other current assets	$ 37,855		$ 68,136
Total current assets	275,765		342,928
Other assets	37,708		36,774
Total assets	1,107,304		1,205,605
Advance payments and deposits	20,574		25,178
Accrued taxes	31,795		6,751
Total current liabilities	140,650		161,705
Deferred tax liability	10,276		31,732
Total liabilities	283,980		375,382
Retained earnings	563,593		552,948
Minority interest	127,937		141,496
Total equity	823,324		830,223	$ 809,169	$ 761,724
Total liabilities and equity	1,107,304		$ 1,205,605
ASU 2014-09 \| Change
CONDENSED CONSOLIDATED BALANCE SHEETS
Prepayments and other current assets	3,319
Total current assets	3,319
Other assets	1,785
Total assets	5,104
Advance payments and deposits	337
Accrued taxes	131
Total current liabilities	468
Deferred tax liability	302	$ 300
Total liabilities	770
Retained earnings	2,481	1,500
Minority interest	1,853	$ 1,100
Total equity	4,334
Total liabilities and equity	5,104
ASU 2014-09 \| Under previous guidance
CONDENSED CONSOLIDATED BALANCE SHEETS
Prepayments and other current assets	34,536
Total current assets	272,446
Other assets	35,923
Total assets	1,102,200
Advance payments and deposits	20,237
Accrued taxes	31,664
Total current liabilities	140,182
Deferred tax liability	9,974
Total liabilities	283,210
Retained earnings	561,112
Minority interest	126,084
Total equity	818,990
Total liabilities and equity	$ 1,102,200

Revenue Recognition - Impacts of adoption in the current period - IS (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue									$ 451,207
Sales, marketing and customer service									35,207	$ 35,184	$ 30,253
Total operating expenses	$ 97,488	$ 90,395	$ 102,035	$ 100,266	$ 66,387	$ 141,697	$ 107,442	$ 110,359	390,184	425,885	405,733
Income from operations	10,318	30,743	15,753	4,209	41,314	(19,565)	15,803	17,756	61,023	55,308	51,270
Income before taxes	11,336	27,920	12,868	1,618	41,196	(21,860)	13,505	14,712	53,742	47,553	45,374
Income tax provisions (benefit)	5,851	7,010	2,088	3,921	(6,181)	(884)	2,596	3,128	18,870	(1,341)	21,160
Net income	5,485	20,910	10,780	(2,303)	47,377	(20,976)	10,909	11,584	34,872	48,894	24,214
Net income attributable to non-controlling interests, net of tax	(4,354)	(3,887)	(3,564)	(3,252)	(3,871)	(3,784)	(5,026)	(4,725)	(15,057)	(17,406)	(12,113)
Net income attributable to ATN International, Inc. stockholders	$ 1,131	$ 17,023	$ 7,216	$ (5,555)	$ 43,506	$ (24,760)	$ 5,883	$ 6,859	19,815	$ 31,488	$ 12,101
ASU 2014-09 \| Change
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue									1,075
Sales, marketing and customer service									(755)
Total operating expenses									(755)
Income from operations									1,830
Income before taxes									1,830
Income tax provisions (benefit)									131
Net income									1,699
Net income attributable to non-controlling interests, net of tax									(706)
Net income attributable to ATN International, Inc. stockholders									993
ASU 2014-09 \| Under previous guidance
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue									450,132
Sales, marketing and customer service									35,962
Total operating expenses									390,939
Income from operations									59,193
Income before taxes									51,912
Income tax provisions (benefit)									18,739
Net income									33,173
Net income attributable to non-controlling interests, net of tax									(14,351)
Net income attributable to ATN International, Inc. stockholders									18,822
Wireless
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue									198,824
Wireless \| ASU 2014-09 \| Change
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue									1,075
Wireless \| ASU 2014-09 \| Under previous guidance
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue									$ 197,749

Revenue Recognition - Impacts of adoption in the current period - CIS (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 5,485	$ 20,910	$ 10,780	$ (2,303)	$ 47,377	$ (20,976)	$ 10,909	$ 11,584	$ 34,872	$ 48,894	$ 24,214
Other comprehensive loss, net of tax									(5,152)	2,018	5,432
Comprehensive income									29,720	50,912	29,646
Less: Comprehensive income attributable to non-controlling interests									(15,057)	(17,406)	(12,113)
Comprehensive income attributable to ATN International, Inc.									14,663	$ 33,506	$ 17,533
ASU 2014-09 \| Change
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income									1,699
Comprehensive income									1,699
Less: Comprehensive income attributable to non-controlling interests									(706)
Comprehensive income attributable to ATN International, Inc.									993
ASU 2014-09 \| Under previous guidance
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income									33,173
Other comprehensive loss, net of tax									(5,152)
Comprehensive income									28,021
Less: Comprehensive income attributable to non-controlling interests									(14,351)
Comprehensive income attributable to ATN International, Inc.									$ 13,670

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669619-108580

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1B
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669625-108580

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4J
-URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591551-111686

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3000-108585

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 10: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4K
-URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591552-111686

+ Details

Revenue Recognition - Impacts of adoption in the current period - SOCF (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net income	$ 5,485	$ 20,910	$ 10,780	$ (2,303)	$ 47,377	$ (20,976)	$ 10,909	$ 11,584	$ 34,872	$ 48,894	$ 24,214
Materials and supplies, prepayments, and other current assets									5,924	1,002	(8,410)
Accrued taxes									29,089	(1,385)	21,547
Accounts payable and accrued liabilities, advance payments and deposits and other current liabilities									(7,044)	4,649	6,522
Other assets									(238)	4,102	(12,122)
Net Cash Provided by (Used in) Operating Activities									115,865	145,725	111,656
Net Cash Provided by (Used in) Investing Activities									(87,319)	(172,318)	(296,580)
Net Cash Provided by (Used in) Financing Activities									(55,230)	(42,101)	75,334
Net change in cash, cash equivalents, and restricted cash									(26,983)	$ (68,468)	$ (110,216)
ASU 2014-09 \| Change
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net income									1,699
Materials and supplies, prepayments, and other current assets									(1,243)
Accrued taxes									131
Accounts payable and accrued liabilities, advance payments and deposits and other current liabilities									107
Other assets									(694)
Net Cash Provided by (Used in) Operating Activities									0
Net Cash Provided by (Used in) Investing Activities									0
Net Cash Provided by (Used in) Financing Activities									0
Net change in cash, cash equivalents, and restricted cash									0
ASU 2014-09 \| Under previous guidance
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net income									33,173
Materials and supplies, prepayments, and other current assets									7,167
Accrued taxes									28,958
Accounts payable and accrued liabilities, advance payments and deposits and other current liabilities									(7,151)
Other assets									$ 456

IMPACT OF HURRICANES IRMA AND MARIA (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended								12 Months Ended
	Feb. 28, 2018	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
IMPACT OF THE HURRICANES IRMA AND MARIA
Revenue										$ 451,207
Pre-tax loss		$ (11,336)	$ (27,920)	$ (12,868)	$ (1,618)	$ (41,196)	$ 21,860	$ (13,505)	$ (14,712)	(53,742)	$ (47,553)	$ (45,374)
Loss on damaged assets from Hurricanes											35,443
Insurance proceeds										34,606
Payment for network repairs and resiliency enhancements										80,152	8,585
HURRICANES IRMA AND MARIA
IMPACT OF THE HURRICANES IRMA AND MARIA
Pre-tax loss											4,000
Loss on damaged assets from Hurricanes											35,400
Insurance proceeds	$ 34,600
Additional operating expenses											3,200
Payment for network repairs and resiliency enhancements										80,200	$ 8,600
HURRICANES IRMA AND MARIA \| Universal Service Fund programs
IMPACT OF THE HURRICANES IRMA AND MARIA
Revenue										$ 15,500

ACQUISITIONS AND DISPOSITIONS - One Communications (Details) - USD ($) $ in Thousands	May 03, 2016	May 02, 2016
One Communications (formerly KeyTech) \| BDC
Acquisitions and Dispositions
Ownership interest held by minority shareholders		43.00%
One Communications (formerly KeyTech)
Acquisitions and Dispositions
Minority ownership contributed in acquisition (as a percent)	43.00%
Cash consideration	$ 34,518
One Communications (formerly Keytech) and BDC
Acquisitions and Dispositions
Ownership interest acquired (as a percent)	51.00%
Cash consideration	$ 41,563
One Communications (formerly Keytech) and BDC \| BDC
Acquisitions and Dispositions
Ownership interest held by minority shareholders	15.00%

ACQUISITIONS AND DISPOSITIONS - Purchase Price Allocation - One Communications (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
	May 03, 2016	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Purchase price allocation:
Gain on One Communications bargain purchase												$ 7,304
Purchase price allocation BDC:
Revenue		$ 107,806	$ 121,138	$ 117,788	$ 104,475	$ 107,701	$ 122,132	$ 123,245	$ 128,115	$ 451,207	$ 481,193	457,003
Income before taxes		$ 11,336	$ 27,920	$ 12,868	$ 1,618	$ 41,196	$ (21,860)	$ 13,505	$ 14,712	53,742	47,553	45,374
Transaction-related charges										$ 2,642	$ 1,009	18,064
One Communications (formerly KeyTech)
Consideration Transferred
Cash consideration	$ 34,518
Non-controlling interests	32,909
Total value to allocate
Value to allocate	67,427
Purchase price allocation:
Cash	8,185
Accounts receivable	6,451
Other current assets	3,241
Property, plant and equipment	100,892
Identifiable intangible assets	10,590
Other long term assets	3,464
Accounts payable and accrued liabilities	(16,051)
Advance payments and deposits	(6,683)
Current debt	(6,429)
Long-term debt	(28,929)
Net assets acquired	74,731
Gain on One Communications bargain purchase	$ 7,304
Purchase price allocation BDC:
Discounted rate used for fair value of noncontrolling interests	15.00%
Revenue												55,500
Income before taxes												2,800
Transaction related charges relating to legal, accounting and consulting services.	$ 4,300
Transaction-related charges												$ 3,400	$ 900
BDC
Consideration Transferred
Cash consideration	7,045
Total value to allocate
Value to allocate	7,045
Purchase price allocation BDC:
Carrying value of BDC non-controlling interest acquired	2,940
Excess of purchase price paid over carrying value of non-controlling interest acquired	4,105
One Communications (formerly Keytech) and BDC
Consideration Transferred
Cash consideration	41,563
Total value to allocate
Value to allocate	$ 74,472
Minimum
Purchase price allocation BDC:
Useful life										3 years
Minimum \| One Communications (formerly KeyTech) \| Income Approach
Purchase price allocation BDC:
Discounted rate used for cash flows (as a percent)	15.00%
Minimum \| One Communications (formerly KeyTech) \| Telecommunication Equipment
Purchase price allocation BDC:
Useful life	3 years
Minimum \| One Communications (formerly KeyTech) \| Customer relationships
Purchase price allocation BDC:
Useful life	9 years
Maximum
Purchase price allocation BDC:
Useful life										39 years
Maximum \| One Communications (formerly KeyTech) \| Telecommunication Equipment
Purchase price allocation BDC:
Useful life	18 years
Maximum \| One Communications (formerly KeyTech) \| Customer relationships
Purchase price allocation BDC:
Useful life	12 years

ACQUISITIONS AND DISPOSITIONS - Purchase Price Allocation - Viya (Details) - USD ($) $ in Thousands		3 Months Ended									12 Months Ended
	Jul. 01, 2016	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Consideration Transferred
Pension funding required by acquisition													$ 22,494
Purchase price allocation:
Goodwill		$ 63,970				$ 63,970				$ 62,873	$ 63,970	$ 63,970	62,873
Revenue		107,806	$ 121,138	$ 117,788	$ 104,475	107,701	$ 122,132	$ 123,245	$ 128,115		451,207	481,193	457,003
Income before taxes		$ 11,336	$ 27,920	$ 12,868	$ 1,618	$ 41,196	$ (21,860)	$ 13,505	$ 14,712		53,742	47,553	45,374
Transaction-related charges											$ 2,642	$ 1,009	$ 18,064
Postretirement Benefits
Purchase price allocation:
Pension and postretirement benefit obligations discount rate		4.50%				3.90%				4.30%	4.50%	3.90%	4.30%
Viya (formerly Innovative)
Consideration Transferred
Purchase price	$ 145,000
Purchase price adjustments	5,300
Cash consideration	51,900
Pension funding required by acquisition										$ 22,500
Working capital adjustments and pension funding													$ 27,800
Total value to allocate
Total consideration	111,860
Non-controlling interests	221
Value to allocate	112,081
Purchase price allocation:
Cash	4,229
Accounts receivable	6,553
Materials & supplies	6,533
Other current assets	1,927
Property, plant and equipment	108,284
Telecommunication licenses	7,623
Goodwill	20,586
Intangible assets	7,800
Other Assets	4,394
Accounts payable and accrued liabilities	(15,971)
Advance payments and deposits	(7,793)
Deferred tax liability	(2,935)
Pension and other postretirement benefit liabilities	(29,149)
Net assets acquired	112,081
Revenue													53,000
Income before taxes													1,500
Transaction related charges relating to legal, accounting and consulting services.	4,100
Transaction-related charges													$ 2,200	$ 1,900
Viya (formerly Innovative) \| Postretirement Benefits
Consideration Transferred
Restricted cash	5,300
Viya (formerly Innovative) \| Term loans
Consideration Transferred
Debt instrument, face amount	$ 60,000
Minimum
Purchase price allocation:
Useful life											3 years
Minimum \| Viya (formerly Innovative)
Purchase price allocation:
Pension and postretirement benefit obligations discount rate	3.60%
Minimum \| Viya (formerly Innovative) \| Income Approach
Purchase price allocation:
Discounted rate used for cash flows (as a percent)	14.00%
Discounted rate used for fair value of noncontrolling interests	15.00%
Minimum \| Viya (formerly Innovative) \| Customer relationships
Purchase price allocation:
Useful life	7 years
Minimum \| Viya (formerly Innovative) \| Telecommunication Equipment
Purchase price allocation:
Useful life	1 year
Maximum
Purchase price allocation:
Useful life											39 years
Maximum \| Viya (formerly Innovative)
Purchase price allocation:
Pension and postretirement benefit obligations discount rate	3.90%
Maximum \| Viya (formerly Innovative) \| Income Approach
Purchase price allocation:
Discounted rate used for cash flows (as a percent)	25.00%
Discounted rate used for fair value of noncontrolling interests	25.00%
Maximum \| Viya (formerly Innovative) \| Customer relationships
Purchase price allocation:
Useful life	13 years
Maximum \| Viya (formerly Innovative) \| Telecommunication Equipment
Purchase price allocation:
Useful life	18 years

ACQUISITIONS AND DISPOSITIONS - Disposition - Viya and others (Details) - Disposal Group, Disposed of by Sale, Not Discontinued Operations - USD ($) $ in Millions			12 Months Ended
	Aug. 18, 2017	Jan. 03, 2017	Dec. 31, 2016
Viya (formerly Innovative) Cable operations \| St. Maarten
Disposition
Consideration for sale of operations		$ 4.8
Gain on disposition		$ 0.1
Viya (formerly Innovative) Cable operations \| British Virgin Islands
Disposition
Gain on disposition	$ 0.0
Aruba Subsidiary Transfer
Disposition
Gain on disposition			$ 0.0

ACQUISITIONS AND DISPOSITIONS - Purchase Price Allocation - US Telecom (Details) - USD ($) $ in Thousands	1 Months Ended
	Jul. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Purchase price allocation:
Goodwill		$ 63,970	$ 63,970	$ 62,873
U.S. Telecom
Consideration Transferred
Cash consideration	$ 9,100
Purchase price allocation:
Property, plant and equipment	10,200
Deferred tax liabilities	3,500
Other long term liabilities	700
Goodwill	$ 3,100

ACQUISITIONS AND DISPOSITIONS - Disposition - Sovernet (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Mar. 08, 2017	Jun. 30, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets and liabilities disposed
Purchase of non-controlling interests			$ 9,663	$ 2,026	$ 3,598
Loss on deconsolidation of subsidiary				529
Impairment charges			0	0	11,425
Goodwill impairment			$ 0
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Sovernet
Disposition
Contingent consideration	$ 2,000
Fair value of contingent consideration				0
Total cash proceeds including working capital adjustments	25,926
Assets and liabilities disposed
Cash	1,821
Accounts receivable	1,696
Inventory	639
Prepayments and other current assets	1,034
Property, plant and equipment	25,294
Other assets	288
Accounts payable and accrued liabilities	(1,718)
Advance payments and deposits	(1,897)
Net assets disposed	27,157
Consideration less net assets disposed	(1,231)
Transaction costs:	(1,156)
(Loss) Gain	(2,387)
Purchase of non-controlling interests	700
Non-controlling interest book value	0
Loss on deconsolidation of subsidiary	500
Transaction-related charges				$ 600	600
Impairment charges		$ 11,100			11,100
Impairment of long-lived assets		3,600			3,600
Goodwill impairment		$ 7,500			$ 7,500
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Sovernet \| Maximum
Disposition
Contingent consideration	$ 4,000

ACQUISITIONS AND DISPOSITIONS - Purchase Price Allocation - Vibrant Energy (Details) - USD ($) $ in Thousands		12 Months Ended
	Apr. 07, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Purchase price allocation:
Goodwill		$ 63,970	$ 63,970	$ 62,873
Consideration Transferred
Transaction-related charges		2,642	$ 1,009	18,064
Vibrant Energy
Purchase price allocation:
Cash	$ 136
Prepayments and other assets	636
Property, plant and equipment	7,321
Goodwill	3,279
Accounts payable and accrued liabilities	(5,179)
Net assets acquired	6,193
Consideration Transferred
Total consideration	6,193
Cash consideration	3,500
Contingent Consideration	2,700	200
Payments of contingent consideration		1,400
Business combination contingent consideration not paid as operational milestones were not achieved		$ 1,100
Transaction related charges relating to legal, accounting and consulting services.	$ 11,400
Transaction-related charges				$ 10,100	$ 1,300

ACQUISITIONS AND DISPOSITIONS - Disposition - U.S. Solar (Details) - Disposal Group, Disposed of by Sale, Not Discontinued Operations - U.S. Solar Operations - USD ($) $ in Thousands		12 Months Ended
	Nov. 06, 2018	Dec. 31, 2018
Disposition
Cash proceeds	$ 65,286
Debt assumption	57,300
Receivables, escrowed	6,500
Total cash proceeds including working capital adjustments	122,600
Assets and liabilities disposed
Cash	3,049
Accounts receivable	1,248
Prepayments and other current assets	801
Property, plant and equipment	94,678
Restricted cash	8,407
Other assets	38
Current portion of long-term debt	(6,992)
Accounts payable and accrued liabilities	(938)
Accrued taxes	586
Long-term debt, excluding current portion	(48,038)
Net assets disposed	52,839
Consideration less net assets disposed	12,447
Transaction costs:	(2,133)
(Loss) Gain	10,314
Gain to non-controlling interests	$ 1,100
Transaction-related charges		$ 2,100

ACQUISITIONS AND DISPOSITIONS - Pro Forma Results (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jul. 01, 2016
Acquisition
Impairment charges	$ 0	$ 0	$ 11,425
One Communications (formerly KeyTech)
Acquisition
Retirement of debt			24,700
Viya (formerly Innovative)
Acquisition
Retirement of debt			185,800
Viya (formerly Innovative) \| Term loans
Acquisition
Debt instrument, face amount					$ 60,000
One Communications and Viya
Pro Forma
Revenue			457,003	$ 355,369
Net income (loss) attributable to ATN International, Inc. Stockholders			$ 12,101	$ 16,940
Earnings per share: Basic (in dollars per share)			$ 0.75	$ 1.06
Earnings per share: Diluted (in dollars per share)			$ 0.75	$ 1.05
One Communications and Viya \| Previously Reported
Pro Forma
Revenue			$ 535,628	$ 546,589
Net income (loss) attributable to ATN International, Inc. Stockholders			$ 14,660	$ (97,102)
Earnings per share: Basic (in dollars per share)			$ 0.91	$ (6.06)
Earnings per share: Diluted (in dollars per share)			$ 0.90	$ (6.02)
One Communications and Viya
Acquisition
Impairment charges			$ 5,400	$ 168,700
One Communications (formerly KeyTech)
Acquisition
Impairment charges				85,600
Viya (formerly Innovative)
Acquisition
Impairment charges				$ 83,100

ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
ACCOUNTS RECEIVABLE
Accounts receivable	$ 54,767	$ 58,552
Less: allowance for doubtful accounts	(16,462)	(15,023)
Total accounts receivable, net	38,305	43,529
U.S. wireless, Retail
ACCOUNTS RECEIVABLE
Accounts receivable	13,785	19,530
U.S. wireless, Wholesale
ACCOUNTS RECEIVABLE
Accounts receivable	$ 40,982	$ 39,022

FIXED ASSETS (Details) $ in Thousands	12 Months Ended
FIXED ASSETS (Details) $ in Thousands	Dec. 31, 2018 USD ($) item	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Fixed Assets
Total plant in service	$ 1,081,318	$ 1,046,805
Total property, plant, and equipment	1,188,916	1,169,806
Less: Accumulated depreciation	(562,064)	(526,660)
Net fixed assets	626,852	643,146
Depreciation and amortization	83,000	83,300	$ 73,300
Capital expenditures offset by grants	0	1,500	2,300
Proceeds from sale of cell sites	$ 6,900		$ 1,424
U.S. Telecom
Fixed Assets
Number of cell sites sold \| item	100
Proceeds from sale of cell sites	$ 24,000
Book value of disposed cell sites	8,800
Gain on sale of cell sites	$ 15,200
Minimum
Fixed Assets
Useful Life	3 years
Maximum
Fixed Assets
Useful Life	39 years
Telecommunications equipment and towers
Fixed Assets
Total plant in service	$ 914,276	774,548
Capital leased assets, cost	27,700	30,000
Capital leased assets, net	20,200	24,400
Remaining amounts due under the Indefeasible rights of use	$ 1,300	$ 600
Telecommunications equipment and towers \| Minimum
Fixed Assets
Useful Life	5 years	5 years
Telecommunications equipment and towers \| Maximum
Fixed Assets
Useful Life	15 years	15 years
Solar assets
Fixed Assets
Total plant in service	$ 57	$ 113,218
Solar assets \| Minimum
Fixed Assets
Useful Life	20 years	20 years
Solar assets \| Maximum
Fixed Assets
Useful Life	23 years	23 years
Office and computer equipment
Fixed Assets
Total plant in service	$ 77,085	$ 76,706
Office and computer equipment \| Minimum
Fixed Assets
Useful Life	3 years	3 years
Office and computer equipment \| Maximum
Fixed Assets
Useful Life	10 years	10 years
Buildings
Fixed Assets
Total plant in service	$ 48,900	$ 48,058
Buildings \| Minimum
Fixed Assets
Useful Life	15 years	15 years
Buildings \| Maximum
Fixed Assets
Useful Life	39 years	39 years
Transportation vehicles
Fixed Assets
Total plant in service	$ 15,039	$ 12,221
Transportation vehicles \| Minimum
Fixed Assets
Useful Life	3 years	3 years
Transportation vehicles \| Maximum
Fixed Assets
Useful Life	10 years	10 years
Leasehold improvements
Fixed Assets
Total plant in service	$ 2,033	$ 2,864
Land
Fixed Assets
Total plant in service	14,728	12,516
Furniture and fixtures
Fixed Assets
Total plant in service	$ 9,200	$ 6,674
Furniture and fixtures \| Minimum
Fixed Assets
Useful Life	5 years	5 years
Furniture and fixtures \| Maximum
Fixed Assets
Useful Life	10 years	10 years
Construction in progress
Fixed Assets
Total property, plant, and equipment	$ 107,598	$ 123,001

GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2017	Jun. 30, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill
Goodwill impairment			$ 0
Impairment charges			$ 0	$ 0	$ 11,425
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Sovernet
Goodwill
Impairment of long-lived assets		$ 3,600			3,600
Goodwill impairment		7,500			7,500
Impairment charges		$ 11,100			$ 11,100
Discounted rate used for cash flows (as a percent)					14.00%
HURRICANES IRMA AND MARIA
Goodwill
Goodwill impairment	$ 0
Discounted rate used for cash flows (as a percent)	14.50%

GOODWILL AND INTANGIBLE ASSETS - Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Changes in the carrying amount of goodwill, by operating segment
Balance at the beginning of the period	$ 63,970	$ 62,873
Acquisitions	0	1,097
Balance at the end of the period	63,970	63,970
U.S. Telecom
Changes in the carrying amount of goodwill, by operating segment
Balance at the beginning of the period	35,268	35,268
Acquisitions	0	0
Balance at the end of the period	35,268	35,268
International Telecom
Changes in the carrying amount of goodwill, by operating segment
Balance at the beginning of the period	25,423	24,326
Acquisitions	0	1,097
Balance at the end of the period	25,423	25,423
Renewable Energy
Changes in the carrying amount of goodwill, by operating segment
Balance at the beginning of the period	3,279	3,279
Acquisitions	0	0
Balance at the end of the period	$ 3,279	$ 3,279

GOODWILL AND INTANGIBLE ASSETS - Net (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Changes in the carrying amount of goodwill, by operating segment
Goodwill, Gross	$ 63,970	$ 63,970
Accumulated impairment	0	0
Goodwill, Total	63,970	63,970	$ 62,873
U.S. Telecom
Changes in the carrying amount of goodwill, by operating segment
Goodwill, Gross	35,268	35,268
Accumulated impairment	0	0
Goodwill, Total	35,268	35,268	35,268
International Telecom
Changes in the carrying amount of goodwill, by operating segment
Goodwill, Gross	25,423	25,423
Accumulated impairment	0	0
Goodwill, Total	25,423	25,423	24,326
Renewable Energy
Changes in the carrying amount of goodwill, by operating segment
Goodwill, Gross	3,279	3,279
Accumulated impairment	0	0
Goodwill, Total	$ 3,279	$ 3,279	$ 3,279

GOODWILL AND INTANGIBLE ASSETS - Change In Carrying Amount Of Telecommunications Licenses (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Changes in the carrying amount of the company's telecommunications licenses, by operating segment
Balance at the beginning of the period		$ 95,952
Balance at the end of the period		93,686	$ 95,952
Telecommunications Licenses
Telecommunications licenses
Discounted rate used for cash flows (as a percent)	14.50%
Impairment of intangible assets	$ 0	0	0	$ 0
Changes in the carrying amount of the company's telecommunications licenses, by operating segment
Balance at the beginning of the period		95,952	48,291
Acquired licenses		485	47,692
Dispositions		(2,750)	(31)
Balance at the end of the period		93,687	95,952	48,291
Telecommunications Licenses \| U.S. Telecom
Changes in the carrying amount of the company's telecommunications licenses, by operating segment
Balance at the beginning of the period		72,605	24,944
Acquired licenses		485	47,692
Dispositions		(2,750)	(31)
Balance at the end of the period		70,340	72,605	24,944
Telecommunications Licenses \| International Telecom
Changes in the carrying amount of the company's telecommunications licenses, by operating segment
Balance at the beginning of the period		23,347	23,347
Balance at the end of the period		$ 23,347	$ 23,347	$ 23,347

GOODWILL AND INTANGIBLE ASSETS - Customer Relationships (Details) - International Telecom - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-lived intangible assets
Other intangible assets	$ 4,500
Customer relationships
Finite-lived intangible assets
Amortization	2,400	$ 3,200	$ 2,000
Future Amortization
2019	1,897
2020	1,528
2021	1,300
2022	1,143
2023	828
Thereafter	2,627
Total	9,323
Franchise Rights
Finite-lived intangible assets
Other intangible assets	3,000
Trade names
Finite-lived intangible assets
Other intangible assets	$ 1,500
Impairment of other intangibles			$ 300

LONG-TERM DEBT (Details) $ in Thousands			12 Months Ended
LONG-TERM DEBT (Details) $ in Thousands	May 22, 2017 USD ($)	May 03, 2016 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jul. 31, 2017 USD ($)	May 21, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 19, 2016 USD ($)	Jul. 01, 2016 USD ($)	Dec. 24, 2014 USD ($)	Dec. 19, 2014 USD ($)
PSE&G
Long-term debt
Stated interest rate										11.30%
One Communications Debt
Long-term debt
Maximum borrowing capacity	$ 37,500					$ 8,600
Term loan assumed		$ 35,400
Financing costs				$ 300
Outstanding debt			$ 31,900
Unamortized financing costs			200
One Communications Debt \| Three month LIBOR
Long-term debt
Basis spread on variable rate (as a percent)		3.25%
One Communications Debt \| Minimum
Long-term debt
Percentage of notional amount required for hedging arrangement	30.00%
One Communications Debt \| Minimum \| Three month LIBOR
Long-term debt
Basis spread on variable rate (as a percent)	2.50%
One Communications Debt \| Maximum
Long-term debt
Period to enter into hedging arrangement	90 years
One Communications Debt \| Maximum \| Three month LIBOR
Long-term debt
Basis spread on variable rate (as a percent)	2.75%
One Communications Debt \| Overdraft Facility
Long-term debt
Maximum borrowing capacity	$ 10,000					$ 5,000
Borrowings outstanding			0
One Communications Debt \| Overdraft Facility \| Three month LIBOR
Long-term debt
Basis spread on variable rate (as a percent)	1.75%
Viya Debt
Long-term debt
Term loan assumed									$ 60,000
Net leverage ratio									3.5
Stated interest rate									4.00%
Financing costs							$ 900
Intercompany debt limit			75,000	$ 50,000
Outstanding debt			60,000
Unamortized financing costs			700
Revolver loan \| Credit facility
Long-term debt
Maximum borrowing capacity			400,000								$ 225,000
Borrowings outstanding			$ 0
Revolver loan \| Credit facility \| Minimum
Long-term debt
Commitment fee (as a percent)			0.175%
Revolver loan \| Credit facility \| Minimum \| LIBOR
Long-term debt
Basis spread on variable rate (as a percent)			1.50%
Revolver loan \| Credit facility \| Minimum \| Base rate
Long-term debt
Basis spread on variable rate (as a percent)			0.50%
Revolver loan \| Credit facility \| Maximum
Long-term debt
Commitment fee (as a percent)			0.25%
Revolver loan \| Credit facility \| Maximum \| LIBOR
Long-term debt
Basis spread on variable rate (as a percent)			1.75%
Revolver loan \| Credit facility \| Maximum \| Base rate
Long-term debt
Basis spread on variable rate (as a percent)			0.75%
Letter of credit sub-facility \| Credit facility
Long-term debt
Maximum borrowing capacity											10,000
Swingline sub-facility \| Credit facility
Long-term debt
Maximum borrowing capacity											10,000
Base rate before one-week or one-month LIBOR (as a percent)			1.00%
Swingline sub-facility \| Credit facility \| Federal Funds Effective Rate
Long-term debt
Basis spread on variable rate (as a percent)			0.50%
Term loans \| Credit facility
Long-term debt
Maximum borrowing capacity			$ 200,000
Term loans \| Ahana Debt
Long-term debt
Term loan assumed										$ 38,900
Term loans \| Ahana Debt \| Minimum
Long-term debt
Effective interest rate (as a percent)										4.50%
Term loans \| Ahana Debt \| Maximum
Long-term debt
Effective interest rate (as a percent)										6.00%
Mobility Funds \| Letter of credit sub-facility \| Credit facility
Long-term debt
Maximum borrowing capacity											$ 25,000
Ahana Operations \| Series A Notes
Long-term debt
Secured debt principal amount								$ 20,600
Stated interest rate								4.427%
Ahana Operations \| Series B Notes
Long-term debt
Secured debt principal amount								$ 45,200
Stated interest rate								5.327%
Ahana Operations \| Series A and Series B Notes
Long-term debt
Financing costs								$ 2,800
Cash flow hedge \| Interest rate swap
Long-term debt
Notional amount					$ 11,000
Interest rate (as a percent)					1.874%
Derivative liabilities			$ 9,600

GOVERNMENT GRANTS (Details) $ in Thousands	1 Months Ended	12 Months Ended
GOVERNMENT GRANTS (Details) $ in Thousands	Aug. 31, 2018 USD ($)	Dec. 31, 2018 USD ($) item	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Government Grants
Revenue		$ 451,207
Universal Service Fund programs
Government Grants
Number of fund disbursement programs \| item		4
Universal Service Fund programs \| HURRICANES IRMA AND MARIA
Government Grants
Revenue		$ 15,500
Mobility Funds
Government Grants
Mobility Funds received		21,100
Mobility Funds \| U.S. Telecom
Government Grants
Revenue		7,200
Grant funds used to offset fixed asset related costs		13,900
High-Cost Support Program \| U.S. Telecom
Government Grants
Revenue		1,200	$ 1,200	$ 1,200
High-Cost Support Program \| International Telecom
Government Grants
Revenue		16,500	16,500	8,200
E-Rate, Lifeline and Rural Health Care Support Programs
Government Grants
Revenue		8,200	$ 10,200	$ 11,000
E-Rate
Government Grants
Grant Funds Awarded		$ 15,400
Tribal Bidding Credit
Government Grants
Wireless service spectrum (in Mhz) \| item		600
Revenue		$ 7,400
Grant funds used to offset fixed asset related costs		5,400
Grant funds used to offset operating expenses		$ 2,000
Connect America Fund Phase II Auction
Government Grants
Grant Funds Awarded	$ 79,900
Grant fund term	10 years

EQUITY (Details) - USD ($)	12 Months Ended			144 Months Ended
EQUITY (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Sep. 18, 2016	Sep. 19, 2016	Sep. 30, 2004
Stock-based compensation
Number of shares reserved to be granted under the plan	2,000,000
Number of shares available for grant	801,000
Treasury Stock
Shares Repurchased	171,907	234,746	70,686
Aggregate Cost	$ 12,437,000	$ 12,983,000	$ 4,873,000
Shares repurchased to satisfy tax withholdings and exercise obligations	141,180	32,814	38,279
Aggregate cost to satisfy tax withholdings and exercise obligations	$ 10,859,000	$ 2,348,000	$ 2,775,000
Average Repurchase Price (in dollars per share)	$ 76.76	$ 71.54	$ 72.50
Number of Options
Exercised (in shares)	(158,021)	(35,081)	(43,053)
Stock-based compensation, additional disclosures
Cash proceeds received upon exercise of options	$ 72,000	$ 1,030,000	$ 649,000
2004 Repurchase Plan
Treasury Stock
Authorized amount						$ 5,000,000
Aggregate Cost				$ 4,100,000
2016 Repurchase Plan
Treasury Stock
Authorized amount					$ 50,000,000
Value of shares available for repurchase	$ 37,700,000
2004 and 2016 Repurchase Plan
Treasury Stock
Shares Repurchased	30,427	201,932	32,407
Aggregate Cost	$ 1,577,000	$ 10,636,000	$ 2,195,000
Average Repurchase Price (in dollars per share)	$ 51.82	$ 52.67	$ 64.72
Stock options
Stock-based compensation
Expiration term	10 years
Vesting period	4 years
Number of Options
Outstanding at the beginning of the period (in shares)	200,021	225,822
Granted (in shares)	0	10,000
Exercised (in shares)	(158,021)	(35,801)
Outstanding at the end of the period (in shares)	42,000	200,021	225,822
Vested and expected to vest at the end of the period (in shares)	42,000	200,021
Exercisable at the end of the period (in shares)	33,250	187,521
Weighted Avg. Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 41.76	$ 39.77
Granted (in dollars per share)		52.97
Exercised (in dollars per share)	39.95	32.29
Outstanding at the end of the period (in dollars per share)	48.61	41.76	$ 39.77
Vested and expected to vest at the end of the period (in dollars per share)	48.61	41.76
Exercisable at the end of the period (in dollars per share)	$ 46.76	$ 40.77
Weighted Average Remaining Contractual Term
Outstanding	4 years 1 month 6 days	3 years 7 months 6 days
Vested and expected to vest	4 years 1 month 6 days	3 years 7 months 6 days
Exercisable	3 years	3 years 7 months 6 days
Aggregate Intrinsic Value
Outstanding	$ 823,515	$ 2,780,253
Vested and expected to vest	962,840	2,780,253
Exercisable	823,515	$ 2,757,353
Unamortized stock based compensation
Unamortized stock based compensation	$ 100,000
Weighted-average period for recognition of unamortized stock-based compensation cost	2 years 3 months 18 days
Stock-based compensation, additional disclosures
Weighted-average fair value of options granted (in dollars per share)		$ 13.77
Aggregate intrinsic value of options exercised	$ 5,927,000	$ 936,000	$ 1,591,000
Cash proceeds received upon exercise of options	72,000	$ 1,030,000	649,000
Excess tax benefits from share-based compensation			591,000
Weighted-average assumptions using Black-Scholes option-pricing model for estimating fair value of each option granted
Risk-free interest rate (as a percent)		1.79%
Expected dividend yield (as a percent)		1.28%
Expected life		4 years
Expected volatility (as a percent)		34.01%
Stock compensation expense
Stock compensation expense	$ 100,000	$ 100,000	100,000
Restricted Stock
Stock-based compensation
Vesting period	4 years
Unamortized stock based compensation
Unamortized stock based compensation	$ 9,000,000
Weighted-average period for recognition of unamortized stock-based compensation cost	2 years 6 months
Stock compensation expense
Stock compensation expense	$ 6,100,000	6,600,000	6,200,000
Additional compensation expenses	$ 200,000	$ 300,000	$ 100,000
Shares
Unvested at the beginning of the period (in shares)	214,938	229,040
Granted (in shares)	111,474	95,095	100,005
Forfeited (in shares)	(31,327)	(12,074)
Vested and issued (in shares)	(94,432)	(97,123)
Unvested at the end of the period (in shares)	200,653	214,938	229,040
Weighted Avg. Fair Value
Unvested at the beginning of the period (in dollars per share)	$ 68.62	$ 67.13
Granted (in dollars per share)	59.52	68.09
Forfeited (in dollars per share)	66.53	69.71
Vested and issued (in dollars per share)	66.27	64.01
Unvested at the end of the period (in dollars per share)	$ 65.21	$ 68.62	$ 67.13

INCOME TAXES - Tax Reform (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
INCOME TAXES - Tax Reform (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 21, 2017
Income tax
U.S. federal statutory rate		21.00%		35.00%
Surcharge on the U.S. federal tax rate		10.00%
Percentage of expensing of certain qualified capital investments		100.00%
Percentage of tax on earnings in the form of cash and cash equivalents		15.50%
Percentage of tax on earnings other than in the form of cash and cash equivalents		8.00%
Provision on the deemed repatriation of undistributed foreign earnings adjustment		$ 3.2
Provision for deemed repatriation of undistributed foreign earnings			$ 7.4
Benefit on the remeasurement of the deferred tax assets and liabilities			$ 18.0
Provision on remeasurement of deferred taxes adjustment	$ 0.4
U.S. Virgin Islands
Income tax
U.S. federal statutory rate		23.10%	38.50%

INCOME TAXES - Components of Income Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Components of income before income taxes
Domestic									$ 28,917	$ 25,232	$ 28,047
Foreign									24,825	22,321	17,327
INCOME BEFORE INCOME TAXES	$ 11,336	$ 27,920	$ 12,868	$ 1,618	$ 41,196	$ (21,860)	$ 13,505	$ 14,712	$ 53,742	$ 47,553	$ 45,374

INCOME TAXES - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reconciliation from the tax computed at statutory income tax rates to the Company's income tax expense
Tax computed at statutory U.S. federal income tax rates									$ 11,286	$ 16,644	$ 15,782
Non-controlling interest									(1,114)	(2,887)	(2,893)
Foreign tax rate differential									(2,716)	(6,621)	(3,074)
Over (under) provided in prior periods									(4,683)	(18)	1,069
Nondeductible expenses									1,610	929	1,134
Goodwill Impairment											2,622
Capitalized transactions costs									62	53	3,138
Change in tax reserves									10,657	4,433	2,561
State Taxes, net of federal benefit									1,674	1,075	1,853
Change in valuation allowance									1,539	6,137	(7,292)
Foreign tax credit expiration											4,179
Refund Claim for Domestic Production Deduction									235	(3,382)
Tax Cuts and Jobs Act of 2017									(148)	(10,639)
Capital loss									15	(6,990)
Other, net									453	(75)	2,081
Total income tax expense (benefit)	$ 5,851	$ 7,010	$ 2,088	$ 3,921	$ (6,181)	$ (884)	$ 2,596	$ 3,128	$ 18,870	$ (1,341)	$ 21,160

INCOME TAXES - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
United States-Federal									$ 24,546	$ 375	$ 15,763
United States-State									4,506	500	505
Foreign									13,060	11,289	10,528
Total current income tax expense									42,112	12,164	26,796
Deferred:
United States-Federal									(17,947)	(10,892)	(1,880)
United States-State									(2,832)	950	(291)
Foreign									(2,463)	(3,563)	(3,465)
Total deferred income tax expense (benefit)									(23,242)	(13,505)	(5,636)
Consolidated:
United States-Federal									6,599	(10,517)	13,883
United States-State									1,674	1,450	214
Foreign									10,597	7,726	7,063
Total income tax expense (benefit)	$ 5,851	$ 7,010	$ 2,088	$ 3,921	$ (6,181)	$ (884)	$ 2,596	$ 3,128	18,870	(1,341)	$ 21,160
Deferred tax assets:
Receivables reserve	3,087				1,524				3,087	1,524
Temporary differences not currently deductible for tax	9,035				7,869				9,035	7,869
Deferred compensation	784				1,446				784	1,446
Pension	635				245				635	245
Net operating losses	29,496				26,685				29,496	26,685
Tax Credits	645				8,969				645	8,969
Total deferred tax asset	43,682				46,738				43,682	46,738
Deferred tax liabilities:
Property, plant and equipment, net	14,608				35,630				14,608	35,630
Intangible assets, net	5,959				5,817				5,959	5,817
Total deferred tax liabilities	20,567				41,447				20,567	41,447
Valuation allowance	(31,442)				(35,829)				(31,442)	(35,829)
Net deferred tax liabilities	(8,327)				(30,538)				(8,327)	(30,538)
Deferred tax assets:
Long term	1,949				1,194				1,949	1,194
Total deferred tax asset	1,949				1,194				1,949	1,194
Deferred tax liabilities:
Long term	(10,276)				(31,732)				(10,276)	(31,732)
Total deferred tax liabilities	(10,276)				(31,732)				(10,276)	(31,732)
Net deferred tax liabilities	$ (8,327)				$ (30,538)				$ (8,327)	$ (30,538)

INCOME TAXES - Components of Income Tax - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 21, 2017	Dec. 31, 2016
Operating loss carryforwards
Effective tax rate (as a percent)	35.10%	(2.80%)
Increase (net) in unrecognized tax benefits recognized discretely	$ 10,600	$ 4,400
Benefit (net) to record a return to accrual adjustment	4,700
Benefit to recognize a capital loss carryover due to capital gains	1,200
Benefit (net) to record the change in valuation allowance	1,400
Provision for the intercompany sale of assets	$ 1,700
Net impact of the 2017 Tax Act		10,600
U.S. federal statutory rate	21.00%		35.00%
Benefit on the remeasurement of the deferred tax assets and liabilities		18,000
Provision on the deemed repatriation of undistributed foreign earnings		7,400
Benefit for the net capital transactions		3,900
Benefit for an amended return refund claim		3,400
Change in valuation allowance	$ 1,539	6,137		$ (7,292)
Provision related to an impairment charge to write down the value of assets				2,622
Operating loss carryforward that will expire	64,000
Operating loss carryforward with no expiration	53,100
Valuation allowance	31,442	35,829
Tax Credits	645	8,969
Undistributed earnings of foreign subsidiaries	119,700
Unrecognized benefits, including interest and penalties	34,700	24,100		20,000
Increase from prior period positions	8,800
Increase in unrecognized tax benefits taken during the current period	3,408	3,394		$ 2,321
Settlement of prior year positions	1,600
Guyana
Operating loss carryforwards
Cash distribution received from foreign subsidiaries with no impact of deferred tax liability	51,600
Federal
Operating loss carryforwards
Operating loss carryforwards	1,200
NOL carryforward valuation allowance		1,900
Foreign
Operating loss carryforwards
Operating loss carryforwards	115,800
Valuation allowance	31,400
NOL carryforward valuation allowance	29,100	24,300
Tax Credits		8,200
Remaining valuation allowance applied to other foreign deferred taxes	$ 2,300	$ 1,400

INCOME TAXES - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Activity related to unrecognized tax benefits
Gross unrecognized tax benefits at the beginning of the period	$ 20,961	$ 17,904	$ 17,216
Increase in unrecognized tax benefits taken during a prior period	7,293		561
Increase in unrecognized tax benefits taken during the current period	3,408	3,394	2,321
Lapse in statute of limitations	(1,430)	(2)	(1,673)
Settlements		(335)	(521)
Gross unrecognized tax benefits at the end of the period	30,232	20,961	17,904
Interest and penalties accrued	4,500	$ 3,100	$ 2,100
Unrecognized tax benefits that would affect the effective tax rate if recognized	$ 34,700

RETIREMENT PLANS - Rate Assumptions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
One-percentage change in assumed health care cost trend rates
Accumulated postretirement benefit obligation, At trend	$ 4,013	$ 5,308
Accumulated postretirement benefit obligation, At trend +1%	4,305	5,723
Impact of Accumulated postretirement benefit obligation, At trend +1%	$ 292	$ 415
Impact of Accumulated postretirement benefit obligation, At trend +1% (as a percent)	7.30%	7.80%
Accumulated postretirement benefit obligation, At trend -1%	$ 3,755	$ 4,944
Impact of Accumulated postretirement benefit obligation, At trend -1%	$ (258)	$ (364)
Impact of Accumulated postretirement benefit obligation, At trend -1% (as a percent)	(6.40%)	(6.90%)
Service cost plus interest cost, At trend	$ 308	$ 389
Service cost plus interest cost, At Trend +1%	338	429
Impact of Service cost plus interest cost, At trend +1%	$ 30	$ 40
Impact of Service cost plus interest cost, At trend +1% (as a percent)	9.70%	10.30%
Service cost plus interest cost, At Trend -1%	$ 282	$ 355
Impact of Service cost plus interest cost, At trend -1%	$ (26)	$ (34)
Impact of Service cost plus interest cost, At trend -1% (as a percent)	(8.40%)	(8.70%)
Pension Plans
Weighted-average rates assumed in the actuarial calculations for the pension plan
Discount rate for benefit obligation (as percent)	4.70%	4.20%	4.60%
Discount rate for benefit cost (as percent)	4.30%	4.60%	4.30%
Annual salary increase (as a percent)	6.50%	6.50%	6.50%
Expected long-term return on plan assets (as a percent)	6.10%	6.10%	6.30%
Postretirement Benefits
Weighted-average rates assumed in the actuarial calculations for the pension plan
Discount rate for benefit obligation (as percent)	4.50%	3.90%	4.30%
Discount rate for benefit cost (as percent)	3.90%	4.30%	3.90%
Postretirement Benefits \| Medical benefit plan
Health care cost trend rates
2019 Trend rate	6.00%
Ultimate rate	4.00%
Postretirement Benefits \| Dental benefit plan
Health care cost trend rates
2019 Trend rate	4.00%
Ultimate rate	4.00%

RETIREMENT PLANS - Benefit Obligations and Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
Pension Plans
Projected benefit obligations:
Balance at beginning of year	$ 80,355	$ 76,119
Service cost	1,794	1,676	$ 1,308
Interest cost	3,279	3,388	2,002
Curtailment			128
Benefits and settlements paid	(4,524)	(3,942)
Actuarial (gain) loss	(4,295)	3,114
Experience (gain) loss	291
Balance at end of year	76,900	80,355	76,119
Plan net assets:
Balance at beginning of year	80,892	75,331
Actual return on plan assets	(730)	8,789
Company contributions	1,830	842
Benefits and settlements paid	(4,462)	(4,070)
Balance at end of year	77,530	80,892	75,331
Funded status of plan
Projected benefit obligation	80,355	76,119	76,119	$ 76,900	$ 80,355
Plan Net Assets	80,892	75,331	75,331	77,530	80,892
Over/ (Under) funded status of plan				630	537
Pension Plans \| GT&T Pension Benefit
Projected benefit obligations:
Balance at beginning of year	13,205
Balance at end of year	14,712	13,205
Plan net assets:
Balance at beginning of year	10,307
Balance at end of year	14,105	10,307
Funded status of plan
Projected benefit obligation	13,205	13,205		14,712	13,205
Plan Net Assets	$ 10,307	10,307		14,105	10,307
Over/ (Under) funded status of plan				(607)	(2,898)
Pension Plans \| GT&T Pension Benefit \| Minimum
Funded status of plan
Percentage of plan assets to be invested within Guyana	70.00%
Pension Plans \| GT&T Pension Benefit \| Maximum
Funded status of plan
Percentage of plan assets to be invested within Guyana	80.00%
Pension Plans \| Viya Pension Benefit
Projected benefit obligations:
Balance at beginning of year	$ 67,150
Balance at end of year	62,188	67,150
Plan net assets:
Balance at beginning of year	70,585
Balance at end of year	63,425	70,585
Funded status of plan
Projected benefit obligation	67,150	67,150		62,188	67,150
Plan Net Assets	70,585	70,585		63,425	70,585
Over/ (Under) funded status of plan				1,237	3,435
Postretirement Benefits
Projected benefit obligations:
Balance at beginning of year	5,307	5,108
Service cost	147	183	97
Interest cost	161	206	97
Benefits and settlements paid	(360)	(367)
Actuarial (gain) loss	(272)	177
Experience (gain) loss	(971)
Balance at end of year	4,012	5,307	5,108
Plan net assets:
Company contributions	360	367
Benefits and settlements paid	(360)	(367)
Funded status of plan
Projected benefit obligation	$ 5,307	$ 5,108	$ 5,108	4,012	5,307
Over/ (Under) funded status of plan				$ (4,012)	$ (5,307)

RETIREMENT PLANS - Net Assets and Allocations (Details) - Pension Plans - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Pension plan assets
Fair value of plan assets	$ 77,530	$ 80,892	$ 75,331
Weighted-average asset allocations (as a percent)	100.00%	100.00%
Level 1
Pension plan assets
Fair value of plan assets	$ 29,858	$ 41,827
Level 2
Pension plan assets
Fair value of plan assets	47,182	38,569
Level 3
Pension plan assets
Fair value of plan assets	490	496
Cash, cash equivalents, money markets and other
Pension plan assets
Fair value of plan assets	$ 5,173	$ 6,363
Weighted-average asset allocations (as a percent)	7.00%	8.00%
Cash, cash equivalents, money markets and other \| Level 1
Pension plan assets
Fair value of plan assets	$ 5,173	$ 6,363
Common Stock
Pension plan assets
Fair value of plan assets	$ 23,052	$ 28,467
Weighted-average asset allocations (as a percent)	30.00%	35.00%
Common Stock \| Level 1
Pension plan assets
Fair value of plan assets	$ 18,760	$ 25,312
Common Stock \| Level 2
Pension plan assets
Fair value of plan assets	4,292	3,155
Mutual funds - fixed income
Pension plan assets
Fair value of plan assets	$ 16,444
Weighted-average asset allocations (as a percent)	21.00%
Mutual funds - fixed income \| Level 2
Pension plan assets
Fair value of plan assets	$ 16,444
Exchange traded funds - equities
Pension plan assets
Fair value of plan assets		904
Exchange traded funds - equities \| Level 1
Pension plan assets
Fair value of plan assets		904
Mutual funds - equities
Pension plan assets
Fair value of plan assets	$ 13,099	$ 9,248
Weighted-average asset allocations (as a percent)	17.00%	11.00%
Mutual funds - equities \| Level 1
Pension plan assets
Fair value of plan assets	$ 4,748	$ 9,248
Mutual funds - equities \| Level 2
Pension plan assets
Fair value of plan assets	8,351
Fixed income securities
Pension plan assets
Fair value of plan assets	$ 18,095	$ 35,414
Weighted-average asset allocations (as a percent)	23.00%	44.00%
Fixed income securities \| Level 2
Pension plan assets
Fair value of plan assets	$ 18,095	$ 35,414
Annuities
Pension plan assets
Fair value of plan assets		496
Annuities \| Level 3
Pension plan assets
Fair value of plan assets		$ 496
Other
Pension plan assets
Fair value of plan assets	$ 1,667
Weighted-average asset allocations (as a percent)	2.00%	2.00%
Other \| Level 1
Pension plan assets
Fair value of plan assets	$ 1,177
Other \| Level 3
Pension plan assets
Fair value of plan assets	$ 490

RETIREMENT PLANS - Amounts in Consolidated Financials (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Pension Plans
Amounts recognized on the consolidated balance sheets
Other Liabilities	$ 744	$ 2,898
Other Assets	1,375	3,435
Accumulated other comprehensive income, net of tax	938	2,953
Amounts recognized in accumulated other comprehensive loss
Net actuarial gain	30	1,408
Accumulated other comprehensive income, pre-tax	30	1,408
Accumulated other comprehensive income, net of tax	938	2,953
Postretirement Benefits
Amounts recognized on the consolidated balance sheets
Accrued and current liabilities	271	392
Other Liabilities	3,742	4,915
Accumulated other comprehensive income, net of tax	1,350	174
Amounts recognized in accumulated other comprehensive loss
Net actuarial gain	1,350	174
Accumulated other comprehensive income, pre-tax	1,350	174
Accumulated other comprehensive income, net of tax	$ 1,350	$ 174

RETIREMENT PLANS - Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Pension Plans
Components of the plan's net periodic pension cost
Service cost	$ 1,794	$ 1,676	$ 1,308
Interest cost	3,279	3,388	2,002
Expected return on plan assets	(4,835)	(4,470)	(2,024)
Amortization of actuarial (gain) loss	121	716	1,271
Curtailment			128
Net periodic pension cost	359	1,310	2,685
Postretirement Benefits
Components of the plan's net periodic pension cost
Service cost	147	183	97
Interest cost	161	206	97
Amortization of actuarial (gain) loss	(67)
Net periodic pension cost	$ 241	$ 389	$ 194

RETIREMENT PLANS - Expected future service (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Pension Plans
Estimated Pension Benefits
2019	$ 5,022
2020	4,292
2021	4,452
2022	5,079
2023	4,355
2024 - 2028	23,534
Total	46,734
Postretirement Benefits
Estimated Pension Benefits
2019	277
2020	255
2021	237
2022	261
2023	236
2024 - 2028	1,535
Total	$ 2,801

COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($) $ in Millions	1 Months Ended		12 Months Ended
	Dec. 31, 2017	Nov. 30, 2007	Dec. 31, 2018	Dec. 31, 2011
Contingency related to spectrum fees
Commitments and contingencies
Spectrum fees paid				$ 2.6
Litigation proceedings and disputes in Guyana
Commitments and contingencies
Period for which litigation proceedings and other disputes have not been the subject of discussions or other significant activity			5 years
Lawsuit filed by CTL
Commitments and contingencies
Damages asserted	$ 25.0	$ 200.0
Legal claims regarding tax filings with the Guyana Revenue Authority
Commitments and contingencies
Future payments related to disputed tax assessments			$ 44.1
Accrued contingent liability			$ 5.0
Legal claims regarding tax filings with the Guyana Revenue Authority \| Minimum
Commitments and contingencies
Percentage of return on investment ensured by the government of Guyana			15.00%

COMMITMENTS AND CONTINGENCIES - Lease Commitments (Details) $ in Thousands, ft² in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) ft²	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
COMMITMENTS AND CONTINGENCIES
Area of lease (in square feet) \| ft²	2.5
Obligation for payments under leases
2019	$ 21,941
2020	18,813
2021	12,406
2022	8,466
2023	4,142
Thereafter	5,991
Total obligations under operating leases	71,759
Rent expense
Rent expense	$ 21,100	$ 20,900	$ 19,800

RELATED PARTY TRANSACTIONS (Details)	1 Months Ended
RELATED PARTY TRANSACTIONS (Details)	Oct. 31, 2014 USD ($) item
Tower Lease
Related Party Transaction
Annual lease payments \| $	$ 117,000
Initial Term	5 years
Number of additional renewal period \| item	2
Renewal period	5 years
Percentage of increase in rent	5.00%
Cornelius B. Prior Jr \| Tropical Tower
Related Party Transaction
Ownership interest	90.00%

SEGMENT REPORTING (Details) $ in Thousands	3 Months Ended								12 Months Ended
SEGMENT REPORTING (Details) $ in Thousands	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) segment	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Segment reporting
Number of reportable segments \| segment									3
Revenue
Revenue	$ 107,806	$ 121,138	$ 117,788	$ 104,475	$ 107,701	$ 122,132	$ 123,245	$ 128,115	$ 451,207	$ 481,193	$ 457,003
Depreciation and amortization									85,719	86,934	75,980
Non-cash stock-based compensation									6,420	6,977	6,410
Operating income (loss)	10,318	$ 30,743	$ 15,753	$ 4,209	41,314	$ (19,565)	$ 15,803	$ 17,756	61,023	55,308	51,270
Segment Assets
Cash, Cash equivalents, and Investments	192,229				215,032				192,229	215,032
Total current assets	275,765				342,928				275,765	342,928
Fixed assets, net	626,852				643,146				626,852	643,146
Goodwill	63,970				63,970				63,970	63,970	62,873
Total assets	1,107,304				1,205,605				1,107,304	1,205,605
Total current liabilities	140,650				161,705				140,650	161,705
Total debt	90,982				155,792				90,982	155,792
Capital Expenditures
Capital expenditures									185,921	142,371
Hurricane rebuild capital expenditures									80,152	8,585
Hurricane insurance proceeds									34,606
Wireless
Revenue
Revenue									198,824	232,501	244,404
Wireline
Revenue
Revenue									230,225	227,827	190,598
Renewable Energy
Revenue
Revenue									22,158	20,865	22,001
Corporate and Other
Revenue
Depreciation and amortization									5,626	4,658	6,030
Non-cash stock-based compensation									6,227	6,675	6,274
Operating income (loss)									(34,252)	(33,496)	(34,472)
Segment Assets
Cash, Cash equivalents, and Investments	78,043				76,627				78,043	76,627
Total current assets	83,107				93,497				83,107	93,497
Fixed assets, net	20,381				17,752				20,381	17,752
Total assets	181,789				184,050				181,789	184,050
Total current liabilities	38,827				13,816				38,827	13,816
Capital Expenditures
Capital expenditures									8,004	6,491
U.S. Telecom
Segment Assets
Goodwill	35,268				35,268				35,268	35,268	35,268
U.S. Telecom \| Operating segments
Revenue
Revenue									115,480	155,723	176,727
Depreciation and amortization									24,615	25,601	24,470
Operating income (loss)									36,813	55,317	49,078
Segment Assets
Cash, Cash equivalents, and Investments	19,118				19,585				19,118	19,585
Total current assets	36,801				40,975				36,801	40,975
Fixed assets, net	78,102				99,462				78,102	99,462
Goodwill	35,269				35,269				35,269	35,269
Total assets	172,634				200,142				172,634	200,142
Total current liabilities	15,783				41,248				15,783	41,248
Capital Expenditures
Capital expenditures									13,389	22,230
U.S. Telecom \| Operating segments \| Wireless
Revenue
Revenue									108,878	143,028	150,044
U.S. Telecom \| Operating segments \| Wireline
Revenue
Revenue									6,602	12,695	26,683
International Telecom
Segment Assets
Goodwill	25,423				25,423				25,423	25,423	24,326
International Telecom \| Operating segments
Revenue
Revenue									313,569	304,605	258,275
Depreciation and amortization									48,889	50,007	40,493
Non-cash stock-based compensation									88	188	22
Operating income (loss)									45,022	28,308	36,910
Segment Assets
Cash, Cash equivalents, and Investments	32,390				110,700				32,390	110,700
Total current assets	75,304				190,396				75,304	190,396
Fixed assets, net	482,770				367,485				482,770	367,485
Goodwill	25,421				25,421				25,421	25,421
Total assets	622,454				629,007				622,454	629,007
Total current liabilities	82,575				91,887				82,575	91,887
Total debt	90,970				94,577				90,970	94,577
Capital Expenditures
Capital expenditures									160,013	80,912
Hurricane rebuild capital expenditures									80,200
Hurricane insurance proceeds									34,600
International Telecom \| Operating segments \| Wireless
Revenue
Revenue									89,946	89,473	94,360
International Telecom \| Operating segments \| Wireline
Revenue
Revenue									223,623	215,132	163,915
Renewable Energy
Segment Assets
Goodwill	3,279				3,279				3,279	3,279	3,279
Renewable Energy \| Operating segments
Revenue
Revenue									22,158	20,865	22,001
Depreciation and amortization									6,589	6,668	4,987
Non-cash stock-based compensation									105	114	114
Operating income (loss)									13,440	5,179	(246)
Segment Assets
Cash, Cash equivalents, and Investments	62,678				8,120				62,678	8,120
Total current assets	80,553				18,060				80,553	18,060
Fixed assets, net	45,599				158,447				45,599	158,447
Goodwill	3,280				3,280				3,280	3,280
Total assets	130,427				192,406				130,427	192,406
Total current liabilities	3,465				14,754				3,465	14,754
Total debt	$ 12				$ 61,215				12	61,215
Capital Expenditures
Capital expenditures									4,515	32,738
Renewable Energy \| Operating segments \| Renewable Energy
Revenue
Revenue									$ 22,158	$ 20,865	$ 22,001

SEGMENT REPORTING - Revenue and Assets (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue and long lived assets
Revenue	$ 107,806	$ 121,138	$ 117,788	$ 104,475	$ 107,701	$ 122,132	$ 123,245	$ 128,115	$ 451,207	$ 481,193	$ 457,003
Long-Lived Assets	831,538				861,484				831,538	861,484	680,461
U.S
Revenue and long lived assets
Revenue									132,288	173,632	198,300
Long-Lived Assets	234,514				358,032				234,514	358,032	265,528
Guyana
Revenue and long lived assets
Revenue									102,056	93,524	91,653
Long-Lived Assets	151,084				129,909				151,084	129,909	132,609
U.S. Virgin Islands
Revenue and long lived assets
Revenue									79,785	83,194	58,431
Long-Lived Assets	216,173				137,018				216,173	137,018	110,773
Bermuda
Revenue and long lived assets
Revenue									103,281	127,244	83,006
Long-Lived Assets	137,992				165,243				137,992	165,243	94,976
Other Foreign Countries
Revenue and long lived assets
Revenue									33,797	3,599	25,613
Long-Lived Assets	$ 91,774				$ 71,282				$ 91,774	$ 71,282	$ 76,575

QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly financial data
Total Revenue	$ 107,806	$ 121,138	$ 117,788	$ 104,475	$ 107,701	$ 122,132	$ 123,245	$ 128,115	$ 451,207	$ 481,193	$ 457,003
Operating expenses	97,488	90,395	102,035	100,266	66,387	141,697	107,442	110,359	390,184	425,885	405,733
Income from operations	10,318	30,743	15,753	4,209	41,314	(19,565)	15,803	17,756	61,023	55,308	51,270
Other income (expense), net	1,018	(2,823)	(2,885)	(2,591)	(118)	(2,295)	(2,298)	(3,044)	(7,281)	(7,755)	(5,896)
INCOME BEFORE INCOME TAXES	11,336	27,920	12,868	1,618	41,196	(21,860)	13,505	14,712	53,742	47,553	45,374
Income taxes	5,851	7,010	2,088	3,921	(6,181)	(884)	2,596	3,128	18,870	(1,341)	21,160
NET INCOME	5,485	20,910	10,780	(2,303)	47,377	(20,976)	10,909	11,584	34,872	48,894	24,214
Net income attributable to non-controlling interests, net of tax	(4,354)	(3,887)	(3,564)	(3,252)	(3,871)	(3,784)	(5,026)	(4,725)	(15,057)	(17,406)	(12,113)
NET INCOME ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS	$ 1,131	$ 17,023	$ 7,216	$ (5,555)	$ 43,506	$ (24,760)	$ 5,883	$ 6,859	$ 19,815	$ 31,488	$ 12,101
Net income (loss) per weighted average basic share attributable to ATN International, Inc. stockholders
Total (in dollars per share)	$ 0.07	$ 1.07	$ 0.45	$ (0.35)	$ 2.71	$ (1.53)	$ 0.36	$ 0.42	$ 1.24	$ 1.95	$ 0.75
Net income (loss) per weighted average diluted share attributable to ATN International, Inc. stockholders
Total (in dollars per share)	$ 0.07	$ 1.07	$ 0.45	$ (0.35)	$ 2.71	$ (1.53)	$ 0.36	$ 0.42	$ 1.24	$ 1.94	$ 0.75

SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Movement in valuation and qualifying accounts
Balance at Beginning of Year	$ 50,852	$ 55,610	$ 17,108
Purchase Price Accounting			41,941
Charged to Costs and Expenses	904	14,939	5,312
Deductions	3,852	19,697	8,751
Balance at End of Year	47,904	50,852	55,610
Valuation allowance on foreign tax credit carryforwards
Movement in valuation and qualifying accounts
Balance at Beginning of Year	8,226		4,180
Charged to Costs and Expenses	(8,226)	8,226
Deductions			4,180
Balance at End of Year		8,226
Valuation allowance on capital loss carryforwards
Movement in valuation and qualifying accounts
Balance at Beginning of Year	1,881
Charged to Costs and Expenses	(1,881)	1,881
Balance at End of Year		1,881
Valuation allowance on foreign net operating losses and other deferred taxes
Movement in valuation and qualifying accounts
Balance at Beginning of Year	25,722	41,908	1,672
Purchase Price Accounting			41,941
Charged to Costs and Expenses	5,877	839	217
Deductions	157	17,025	1,922
Balance at End of Year	31,442	25,722	41,908
Valuation allowance on state net operating losses
Movement in valuation and qualifying accounts
Balance at Beginning of Year		553	1,962
Deductions		553	1,409
Balance at End of Year			553
Allowance for doubtful accounts
Movement in valuation and qualifying accounts
Balance at Beginning of Year	15,023	13,149	9,294
Charged to Costs and Expenses	5,134	3,993	5,095
Deductions	3,695	2,119	1,240
Balance at End of Year	$ 16,462	$ 15,023	$ 13,149