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Document and Entity Information - USD ($) $ in Millions	12 Months Ended
Document and Entity Information - USD ($) $ in Millions	Dec. 31, 2016	Mar. 01, 2017	Jun. 30, 2016
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, 2016
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 Public Float			$ 841
Entity Common Stock, Shares Outstanding		16,144,061
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 269,721	$ 392,045
Restricted cash	524	824
Short-term investments	9,237
Accounts receivable, net of allowances of $13.1 million and $9.3 million, respectively	45,419	39,020
Materials and supplies	14,365	8,220
Prepayments and other current assets	28,103	28,383
Total current assets	367,369	468,492
Fixed Assets:
Property, plant and equipment	1,138,362	807,247
Less accumulated depreciation	(490,650)	(433,744)
Net fixed assets	647,712	373,503
Telecommunication licenses, net	48,291	43,468
Goodwill	62,873	45,077
Customer relationships, net	15,029	1,081
Restricted cash	18,113	5,477
Other assets	38,831	7,906
Total assets	1,198,218	945,004
Current Liabilities:
Current portion of long-term debt	12,440	6,284
Accounts payable and accrued liabilities	92,708	54,289
Dividends payable	5,487	5,142
Accrued taxes	13,531	9,181
Advance payments and deposits	25,529	9,459
Other current liabilities	410
Total current liabilities	150,105	84,355
Deferred income taxes	46,622	45,406
Other liabilities	47,939	26,944
Long-term debt, excluding current portion	144,383	26,575
Total liabilities	389,049	183,280
Commitments and contingencies (Note 13)
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; 16,971,634 and 16,828,576 shares issued, respectively, and 16,138,983 and 16,067,736 shares outstanding respectively	169	168
Treasury stock, at cost; 832,652 and 760,840 shares, respectively	(23,127)	(18,254)
Additional paid-in capital	160,176	154,768
Retained earnings	538,109	547,321
Accumulated other comprehensive income/(loss)	1,728	(3,704)
Total ATN International, Inc. stockholders’ equity	677,055	680,299
Non-controlling interests	132,114	81,425
Total equity	809,169	761,724
Total liabilities and equity	$ 1,198,218	$ 945,004

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowances (in dollars)	$ 13,149	$ 9,294
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	16,971,634	16,828,576
Common stock, shares outstanding	16,138,983	16,067,736
Treasury stock, shares	832,652	760,840

CONSOLIDATED INCOME STATEMENTS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
REVENUE:
Total revenue	$ 457,003	$ 355,369	$ 336,347
OPERATING EXPENSES (excluding depreciation and amortization unless otherwise indicated):
Termination and access fees	116,427	77,806	77,888
Engineering and operations	52,902	39,582	30,954
Sales and marketing	31,050	23,898	21,664
Equipment expense	14,342	14,803	13,338
General and administrative	94,293	59,436	52,734
Transaction-related charges	16,279	7,182	2,959
Restructuring charges	1,785
Depreciation and amortization	75,980	56,890	51,234
Impairment of goodwill and long-lived assets	11,425
Bargain purchase gain	(7,304)
Gain on disposition of long-lived assets	27	(2,823)
Total operating expenses	407,206	276,774	250,771
Income from operations	49,797	78,595	85,576
OTHER INCOME (EXPENSE)
Interest income	1,239	588	788
Interest expense	(5,362)	(3,180)	(1,208)
Loss on deconsolidation of subsidiary		(19,937)
Other income, net	(300)	135	1,012
Other expense, net	(4,423)	(22,394)	592
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	45,374	56,201	86,168
Income taxes	21,160	24,137	28,148
INCOME FROM CONTINUING OPERATIONS	24,214	32,064	58,020
INCOME FROM DISCONTINUED OPERATIONS:
Income from discontinued operations, net of tax		1,092	1,102
NET INCOME	24,214	33,156	59,122
Net income attributable to non-controlling interests, net of tax expense of $1.3 million, $1.6 million, and $1.6 million, respectively.	(12,113)	(16,216)	(10,970)
NET INCOME ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS	$ 12,101	$ 16,940	$ 48,152
NET INCOME PER WEIGHTED AVERAGE BASIC SHARE ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS:
Continuing operations (in dollars per share)	$ 0.75	$ 0.99	$ 2.96
Discontinued operations (in dollars per share)		0.07	0.07
Total (in dollars per share)	0.75	1.06	3.03
NET INCOME PER WEIGHTED AVERAGE DILUTED SHARE ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS:
Continuing operations (in dollars per share)	0.75	0.98	2.94
Discontinued operations (in dollars per share)		0.07	0.07
Total (in dollars per share)	$ 0.75	$ 1.05	$ 3.01
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	16,131	16,022	15,898
Diluted (in shares)	16,227	16,142	16,013
DIVIDENDS PER SHARE APPLICABLE TO COMMON STOCK (in dollars per share)	$ 1.32	$ 1.22	$ 1.12
Wireless
REVENUE:
Total revenue	$ 228,798	$ 237,042	$ 241,690
Wireline
REVENUE:
Total revenue	188,019	86,485	85,284
Renewable energy
REVENUE:
Total revenue	21,608	21,040
Equipment and other
REVENUE:
Total revenue	$ 18,578	$ 10,802	$ 9,373

CONSOLIDATED INCOME STATEMENTS (Parentheticals) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CONSOLIDATED INCOME STATEMENTS
Discontinued operations, tax expense (benefit)	$ 1.3	$ 1.6	$ 1.6

- Definition

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

+ References + Details

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 24,214	$ 33,156	$ 59,122
Other comprehensive income:
Foreign currency translation adjustment	(687)	26	4
Unrealized gain on available-for-sale marketable securities	868
Projected pension benefit obligation, net of tax expense of $0.7 million, $0.7 million and $0.6 million	5,251	(809)	(724)
Other comprehensive income, net of tax	5,432	(783)	(720)
Comprehensive income	29,646	32,373	58,402
Less: Comprehensive income attributable to non-controlling interests	(12,113)	(16,216)	(10,970)
Comprehensive income attributable to ATN International, Inc.	$ 17,533	$ 16,157	$ 47,432

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Projected pension benefit obligation, tax expense (benefit)	$ 0.7	$ 0.7	$ 0.6

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, 2013	$ 643,330	$ 164	$ (13,389)	$ 139,106	$ 519,651	$ (2,202)	$ 56,525	$ 699,855
Increase (Decrease) in Stockholders' Equity
Issuance of 43,034, 87,378 and 43,053 shares of common stock upon exercise of stock options for the years ended December 31, 2014, 2015 and 2016, respectively	1,623	2		1,621				1,623
Purchase of treasury stock of 34,293, 37,567, and 70,686 shares for the years ended December 2014, 2015, and 2016, respectively	(2,160)		(2,160)					(2,160)
Stock-based compensation	4,324			4,324				4,324
Dividends declared on common stock	(17,840)				(17,840)		(16,331)	(34,171)
Excess tax benefits from share-based compensation	513			512				513
Investments made by minority shareholders							9,796	9,796
Comprehensive income:
Net income	48,152				48,152		10,970	59,122
Other comprehensive income (loss), net of tax expense (benefit) of $641, $717 and $677 for the years ended 2014, 2015 and 2016, respectively	(720)					(719)		(720)
Comprehensive income	47,432						10,970	58,402
Equity, end of period at Dec. 31, 2014	677,222	166	(15,549)	145,563	549,963	(2,921)	60,960	738,182
Increase (Decrease) in Stockholders' Equity
Issuance of 109,318, 93,864 and 100,005 restricted shares of common stock for the years ended December 31, 2014, 2015 and 2016, respectively	1	1						1
Issuance of 43,034, 87,378 and 43,053 shares of common stock upon exercise of stock options for the years ended December 31, 2014, 2015 and 2016, respectively	2,809	1		2,808				2,809
Purchase of treasury stock of 34,293, 37,567, and 70,686 shares for the years ended December 2014, 2015, and 2016, respectively	(2,705)		(2,705)					(2,705)
Stock-based compensation	4,974			4,974				4,974
Dividends declared on common stock	(19,582)				(19,582)		(16,715)	(36,297)
Excess tax benefits from share-based compensation	1,423			1,423				1,423
Investments made by minority shareholders							951	951
Deconsolidation of subsidiary							20,013	20,013
Comprehensive income:
Net income	16,940				16,940		16,216	33,156
Other comprehensive income (loss), net of tax expense (benefit) of $641, $717 and $677 for the years ended 2014, 2015 and 2016, respectively	(783)					(783)		(783)
Comprehensive income	16,157						16,216	32,373
Equity, end 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 109,318, 93,864 and 100,005 restricted shares of common stock for the years ended December 31, 2014, 2015 and 2016, respectively	(1)			(1)				(1)
Issuance of 43,034, 87,378 and 43,053 shares of common stock upon exercise of stock options for the years ended December 31, 2014, 2015 and 2016, respectively	1,409	1		1,408				1,409
Purchase of treasury stock of 34,293, 37,567, and 70,686 shares for the years ended December 2014, 2015, and 2016, 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 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 income (loss), net of tax expense (benefit) of $641, $717 and $677 for the years ended 2014, 2015 and 2016, respectively	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

CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CONSOLIDATED STATEMENTS OF EQUITY
Issuance of restricted shares of common stock	100,005	93,864	109,318
Issuance of shares of common stock upon exercise of stock options	43,053	87,378	43,034
Purchase of shares of common stock	70,686	37,567	34,293
Other comprehensive income, tax	$ 677	$ 717	$ 641

CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	12 Months Ended
CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Cash flows from operating activities:
Net income	$ 24,214	$ 33,156	$ 59,122
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization	75,980	56,890	51,234
Provision for doubtful accounts	2,454	1,199	1,676
Amortization and write off of debt discount and debt issuance costs	505	458	114
Stock-based compensation	6,410	4,975	4,323
Deferred income taxes	(5,636)	17,869	(113)
Bargain purchase gain	(7,304)
(Gain) Loss on disposition of long-lived assets	27	(2,823)
Gain on sale of discontinued operations		(1,092)	(1,102)
Impairment of long-lived assets	11,425
Pension funding required by Innovative acquisition	(22,494)
Other non-cash activity	566
Loss on deconsolidation of subsidiary		19,937
Changes in operating assets and liabilities, excluding the effects of acquisitions:
Accounts receivable	2,601	11,744	(15,264)
Materials and supplies, prepayments, and other current assets	(8,410)	(1,094)	(4,817)
Income tax receivable			(2,620)
Accounts payable and accrued liabilities, advance payments and deposits and other current liabilities	6,522	(2,385)	7,629
Accrued taxes	21,547	9,740	(15,650)
Other assets	(12,122)	(134)	(1,833)
Other liabilities	15,371	(9,360)
Net cash provided by operating activities of continuing operations	111,656	139,080	82,699
Net cash provided by operating activities of discontinued operations		158	(4,719)
Net cash provided by operating activities	111,656	139,238	77,980
Cash flows from investing activities:
Capital expenditures	(124,282)	(64,753)	(58,300)
Purchase of marketable securities	(2,000)
Acquisition of businesses, net of acquired cash of $12.6 million, $0.0 million, and $6.6 million	(146,395)	(11,968)	(50,361)
Restricted cash acquired from acquisition of business			(5,884)
Purchases of spectrum licenses and other intangible assets, including deposits	(10,860)
Acquisition of non-controlling interest in subsidiary	(7,045)
Purchase of short-term investments	(7,422)
Change in restricted cash	(12,108)	38,877	38,707
Proceeds from disposition of long-lived assets	1,424	5,873	1,371
Net cash used in investing activities of continuing operations	(308,688)	(31,971)	(74,467)
Cash flows from financing activities:
Dividends paid on common stock	(20,965)	(19,070)	(17,488)
Proceeds from issuance of debt	125,800
Distribution to non-controlling stockholders	(8,632)	(16,514)	(16,331)
Payment of debt issuance costs	(2,763)	(892)	(1,945)
Proceeds from stock option exercises	649	1,998	1,129
Principal repayments of term loan	(33,564)	(6,017)
Purchase of common stock	(4,114)	(1,893)	(1,665)
Repurchases of non-controlling interests	(3,485)		(104)
Investments made by minority shareholders in consolidated affiliates	22,408	950	2,500
Net cash provided by (used in) financing activities	75,334	(41,438)	(33,904)
Effect of foreign currency exchange rates on cash and cash equivalents	(626)
Net change in cash and cash equivalents	(122,324)	65,829	(30,391)
Cash and cash equivalents, beginning of period	392,045	326,216	356,607
Cash and cash equivalents, end of period	269,721	392,045	326,216
Supplemental cash flow information:
Interest paid	4,451	2,724	2,930
Taxes paid	8,237	9,636	48,349
Dividends declared, not paid	5,487	5,141	4,618
Noncash investing activity
Purchases of property and equipment included in accounts payable and accrued expenses	$ 16,847	$ 7,705	$ 5,136

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CONSOLIDATED STATEMENTS OF CASH FLOWS
Cash acquired from acquisition	$ 12.6	$ 0.0	$ 6.6

ORGANIZATION AND BUSINESS OPERATIONS

12 Months Ended

Dec. 31, 2016

ORGANIZATION AND BUSINESS OPERATIONS

ORGANIZATION AND BUSINESS OPERATIONS

1. ORGANIZATION AND BUSINESS OPERATIONS

The Company is a holding company that, through its operating subsidiaries, (i) provides wireless and wireline telecommunications services in North America, Bermuda and the Caribbean, (ii) develops, owns and operates commercial distributed generation solar power systems in the United States and India, and (iii) owns and operates terrestrial and submarine fiber optic transport systems in the United States and the Caribbean.

The Company offers the following principal services:

Wireless. In the United States, 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 offer wireless voice and data services to retail customers in Bermuda, Guyana, the U.S. Virgin Islands and in other smaller markets in the Caribbean and the United States.

Wireline. The Company’s wireline services include local telephone and data services in Bermuda, Guyana, the U.S. Virgin Islands, and in other smaller markets in the Caribbean and the United States. Our wireline services also include video services in Bermuda and the U.S Virgin Islands. As of December 31, 2016, the Company also offered facilities‑based integrated voice and data communications services and wholesale transport services to enterprise and residential customers in New England, primarily Vermont, and in New York State. In addition, the Company offers wholesale long‑distance voice services to telecommunications carriers.

Renewable Energy. In the United States, the Company provides distributed generation solar power to corporate, utility and municipal customers in Massachusetts, California and New Jersey. Beginning in April 2016, the Company began developing projects in India to provide distributed generation solar power to corporate and utility customers

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, 2016:


Segment	Services	Markets	Tradenames
U.S. Telecom	Wireless	United States (rural markets)	Commnet, Choice, Choice NTUA Wireless
	Wireline	United States (New England and New York State)	Sovernet, ION, Essextel
International Telecom	Wireline	Guyana, Bermuda, U.S. Virgin Islands	GTT+, One, Innovative, Logic
	Wireless	Bermuda, Guyana, U.S. Virgin Islands	One, GTT+, Innovative, Choice
	Video Services	Bermuda, U.S. Virgin Islands, Cayman Islands, British Virgin Islands, St. Maarten	One, Innovative, Logic, BVI Cable TV
Renewable Energy	Solar	United States and India	Ahana Renewables, 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. 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 respective revenue. Management fees from subsidiaries are eliminated in consolidation.

To be consistent with how management allocates resources and assesses the performance of its business operations in 2016, the Company updated its reportable operating segments in the first quarter of the year to consist of the following: i) U.S. Telecom, consisting of the Company’s former U.S. Wireless and U.S. Wireline segments, ii) International Telecom, consisting of the Company’s former Island Wireless and International Integrated Telephony segments and the results of its One Communications and Innovative Acquisitions as discussed below, and iii) Renewable Energy, consisting of the Company’s former Renewable Energy segment and the results of its Vibrant Energy Acquisition. The prior year segment information has been recast to conform to the current year’s segment presentation.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

12 Months Ended

Dec. 31, 2016

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, 2015 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, 2015 the aggregate impact of the changes included an increase to termination and access fees of $4.1 million, a decrease to engineering and operations expenses of $2.3 million, a decrease to sales and marketing expenses of $2.4 million and an increase to general and administrative expenses of $0.5 million.

During the year ended December 31, 2016, the Company’s other assets increased primarily due to a deposit to purchase spectrum licenses, a $2.0 million purchase of securities in an unaffiliated entity, $2.1 million of assets acquired in the One Communications Acquisition, and $7.6 million of assets acquired in the Innovative Transaction, and $6.3 million related to operations in the Renewable Energy segment.

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, 2016, the Company had deposits with banks in excess of FDIC insured limits and $24.3 million of its cash is on deposit with non‑insured 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 8). As of December 31, 2016 and 2015, the Company held $7.5 million and $3.8 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, net of related income taxes, for available for sale securities are reported as net increases and decreases to accumulated other comprehensive income (loss) until realized. The estimated fair values of investments are based on quoted market prices as of the end of the reporting period. The corporate bonds as of December 31, 2016 have contractual maturities of less than one year.

Restricted Cash

The majority of the Company’s restricted cash balance is held in the Company’s Ahana Renewables subsidiary as described in Note 3. The restricted cash is held in escrow and serves as collateral for Ahana Renewables’ debt in order to meet future debt service obligations and other operating obligations of the solar facilities.

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.

Materials and Supplies

Materials and supplies primarily include handsets, customer premise equipment, cables and poles and are recorded at the lower of cost or market cost being determined on the basis of specific identification and market determined using replacement cost.

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 $3.2 million and $3.0 million as of December 31, 2016 and 2015, 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.

See Note 3, Pending Disposition- U.S. Telecom, regarding the Company’s impairment of certain fixed assets.

Goodwill and Indefinite‑Lived Intangible Assets

Goodwill is 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. If the book value of a reporting unit exceeds its fair value, the implied fair value of goodwill is compared with the carrying amount of goodwill. If the carrying amount of goodwill exceeds the implied fair value, an impairment loss is recorded equal to that excess.

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, 2016 and 2015, 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 7 for a discussion of the Company’s quantitative and qualitative tests of its goodwill. See Note 3, Pending Disposition- U.S. Telecom, regarding the Company’s impairment of certain fixed assets and goodwill.

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 by the minority stockholders in GTT, Commnet’s consolidated subsidiaries, One Communications, Innovative, Sovernet and its consolidated subsidiaries and Ahana Renewables, along with their 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		Short Term
	Obligation		Adjustment		Investment		Total

Balance at December 31, 2013	$	(1,949)		(253)		—		(2,202)
Adjust funded status of pension plan, net of tax of $0.6 million		(723)		—		—		(723)
Foreign currency translation adjustment		—		4		—		4
Balance at December 31, 2014		(2,672)		(249)		—		(2,921)
Adjust funded status of pension plan, net of tax of $0.7 million		(809)		—		—		(809)
Foreign currency translation adjustment		—		26		—		26
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

Amounts totaling $1.3 million, $0.2 million, and $0.2 million were reclassified from other comprehensive income to general and administrative operating expense related to the Company’s defined pension plans for the years ending December 31, 2016, 2015, and 2014, respectively.

Revenue Recognition- Telecommunications

Service revenues are primarily derived from providing access to and usage of the Company’s networks and facilities. Access revenues from postpaid customers are generally billed one month in advance and are recognized over the period that the corresponding service is rendered to customers. Revenues derived from usage of the Company’s networks, including airtime, roaming, long‑distance and Universal Service Fund revenues, are recognized when the services are provided and are included in unbilled revenues until billed to the customer. Prepaid airtime sold to customers is recorded as deferred revenue prior to the commencement of services and is recognized when the airtime is used or expires. The Company offers enhanced services including caller identification, call waiting, call forwarding, three‑way calling, voice mail, and text and picture messaging, as well as downloadable wireless data applications, including ringtones, music, games, and other informational content. Generally, these enhanced features generate additional service revenues through monthly subscription fees or increased usage through utilization of the features. Other optional services such as equipment protection plans may also be provided for a monthly fee and are either sold separately or bundled and included in packaged rate plans. Revenues from enhanced features and optional services are recognized when earned. Access and usage‑based services are billed throughout the month based on the bill cycle assigned to a particular customer. As a result of billing cycle cut‑off times, management must estimate service revenues earned but not yet billed at the end of each reporting period.

Sales of communications products including wireless handsets and accessories represent a separate earnings process and are recognized when the products are delivered to and accepted by customers. The Company accounts for transactions involving both the activation of service and the sale of equipment in accordance with the authoritative guidance for the accounting for revenue arrangements with multiple deliverables. Fees assessed to communications customers to activate service are not a separate unit of accounting and are allocated to the delivered item (equipment) and recognized as product sales to the extent that the aggregate proceeds received from the customer for the equipment and activation fee do not exceed the relative fair value of the equipment. Commissions paid to third parties are expensed as incurred and included in sales and marketing expenses.

Wholesale revenues are those revenues generated from providing voice or data services to the customers of other wireless carriers principally through “roaming” agreements, and the revenue is recognized over the period that the service is rendered to customers.

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 long-term power purchase agreements (“PPA’s”) with various customers, or hosts, that range from 10 to 25 years. The Company, which is required to sell all generated power to the hosts, recognizes revenue from the PPA’s as electricity is generated and sold at contractual rates as defined within the respective PPA.

The Company’s Renewable Energy segment also generates revenue from the sale of Solar Renewable Energy Credits (“SRECs”). Revenue is recognized as SRECs are sold through long-term purchase agreeements at the contractual rate specified in the agreement.

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, other access fees incurred to terminate calls, customer bad debt expense, telecommunication spectrum fees and direct costs associated with the Company’s Renewable Energy segment.

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 incurred 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 incurred to sales personnel, customer service expenses, sales commissions and the costs associated with the development and implementation of promotion and marketing campaigns.

Equipment expenses. Equipment expenses include the costs of handset and customer resale equipment in the Company’s retail businesses.

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. 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 include costs incurred in integrating our newly acquired Companies.

Depreciation and amortization expenses. Depreciation and amortization expenses represent the depreciation and amortization charges recorded on our property and equipment and intangible assets.

Impairment of goodwill and long-lived 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. 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 fair value of the reporting unit does not exceed the carrying value of the reporting unit, including goodwill, an analysis is performed to determine if an impairment charge should be recorded.

Accounting for Grants

The Company has received funding from the U.S. Government and its agencies under Stimulus and Universal Service Fund programs. These funding programs are generally designed to fund telecommunications infrastructure expansion into rural or underserved areas of the United States. The funding programs are evaluated to determine if they represent funding related to capital expenditures (capital grants) or operating activities (income grants).

Funding received from Stimulus programs is on a cost‑reimbursement basis for capital expenditures incurred by the Company to expand its network and is considered a capital grant. Accordingly, reimbursements for eligible expenditures under the Stimulus programs are recorded as a reduction to property, plant and equipment on the Company’s consolidated balance sheets, an investing cash inflow and a future reduction in depreciation expense in the consolidated income statements. The depreciable period for the grant is commensurate with the related assets which typically range from 5 to 20 years. As of December 31, 2016, the Company has spent $99.3 million in capital expenditures of which $73.9 million has been or will be funded by the Stimulus programs. Accordingly, funding received for capital expenditures from the Stimulus Programs is recorded as a reduction to property, plant and equipment on the Company’s consolidated balance sheets, an investing cash inflow within capital expenditures and a future reduction in depreciation expense in the consolidated income statements. Funding received for operating costs is recorded as a reduction to the Company’s operating expenses in its consolidated statements of income and an operating cash inflow.

Funding received from Universal Service Fund programs is received over time for operating the Company’s network in certain rural geographical areas and is considered an income grant. Accordingly, such funding is recognized as operating cash inflows. Once services are provided, revenue is recognized in the Company’s consolidated income statements. During the year ended December 31, 2016 and December 31, 2015 the Company received approximately $17.7 million and $7.9 million, respectively, from the Universal Service Fund programs. Of these amounts, $9.5 million for the year ended December 31, 2016 and $1.3 million for the year ended December 31, 2015 were to support our U.S. Wireless business relating to high‑cost areas.

Funding received from the Phase I Mobility Fund, as further described in Note 9, is for the use of both capital expenditures and operating costs incurred by the Company. Accordingly, funding received for capital expenditures from the Phase I Mobility Fund is recorded as a reduction to property, plant and equipment on the Company’s consolidated balance sheets, an investing cash inflow within capital expenditures and a future reduction in depreciation expense in the consolidated income statements. Funding received for operating costs is recorded as a reduction to the Company’s operating expenses in its consolidated income statements and an operating cash inflow.

Compliance with grant requirements is reviewed as of December 31, of each year 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.

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 our 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.

As of December 31, 2014, the Company had deferred taxes that were classified as current and noncurrent assets and liabilities. The Company elected to prospectively adopt ASU 2015-17 as of December 31, 2015, thus reclassifying $3.9 million of current deferred tax assets and $0.2 million of current deferred tax liabilities to noncurrent on the accompanying consolidated December 31, 2015 balance sheet. The adoption of this guidance had no impact on the Company’s consolidated results of income and comprehensive income.

Credit Concentrations and Significant Customers

The Company has been historically dependent on a limited amount of customers for its wholesale roaming business. The following table indicates the percentage of revenues generated from a single customer that exceeds 10% of the Company’s consolidated revenue in any of the past three years:


Customer	2016		2015		2014
Verizon	12	%	19	%	16	%
AT&T	14	%	17	%	26	%

No other customer accounted for more than 10% of consolidated revenue in any of the past three years.

The following table indicates the percentage of accounts receivable, from customers that exceed 10% of the Company’s consolidated accounts receivable, net of allowances, as of December 31, 2016 and 2015:


Customer	2016		2015
AT&T	17	%	17	%
Verizon	12	%	13	%

Foreign Currency Gains and Losses

We translate the assets and liabilities of our 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 AOCI. 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 Company recognizes a pension or other postretirement plan’s funded status as either an asset or liability in its consolidated balance sheet. Actuarial gains and losses are 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, 2016 and 2015 are summarized as follows:


	December 31, 2016
			Significant Other
	Quoted Prices in		Observable
	Active Markets		Inputs
Description	(Level 1)		(Level 2)		Total
Certificates of deposit	$	—	$	391	$	391
Money market funds	$	29,027	$	—	$	29,027
Short term investments	$	1,751	$	7,486	$	9,237
Commercial Paper	$	—	$	29,981	$	29,981
Total assets measured at fair value	$	30,778	$	37,858	$	68,636


	December 31, 2015
			Significant Other
	Quoted Prices in		Observable
	Active Markets		Inputs
Description	(Level 1)		(Level 2)		Total
Certificates of deposit	$	—	$	377	$	377
Money market funds	$	76,263	$	—	$	76,263
Total assets measured at fair value	$	76,263	$	377	$	76,640

Certificate of Deposit

As of December 31, 2016 and December 31, 2015, 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, 2016 and December 31, 2015, 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, 2016, this asset class consisted of short term foreign and U.S. corporate bonds and equity securities. Corporate bonds 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.

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 marketable securities is estimated using Level 2 inputs. At December 31, 2016, the fair value of marketable securities approximated its carrying amount of $2.0 million and is included in other assets on the consolidated balance sheet.

The fair value of long-term debt is estimated using Level 2 inputs. At December 31, 2016, the fair value of long-term debt, including the current portion, was $159.9 million and its book value was $156.8 million. At December 31, 2015, the fair value of the long-term debt, including the current portion, was equal to its carrying amount of $32.9 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,
	2016	2015	2014
Basic weighted-average shares of common stock outstanding	16,131	16,022	15,898
Stock options	96	120	115
Diluted weighted-average shares of common stock outstanding	16,227	16,142	16,013

The following notes the number of potential share 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,
	2016	2015	2014
Stock options	5	2	—
Total	5	2	—

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, $0.4 million and $0.9 million of non‑cash, share‑based compensation expense during 2016, 2015, and 2014, respectively. See Note 10 for assumptions used to calculate the fair value of the options granted.

The Company also issued 100,005 restricted shares of its common stock in 2016; 93,864 restricted shares of common stock in 2015 and 109,318 restricted shares of common stock in 2014. These shares are being charged to income based upon their fair values over their vesting period of four years. Non‑cash equity‑based compensation expense, related to the vesting of restricted shares issued was $6.2 million, $3.4 million and $3.1 million in 2016, 2015, and 2014, respectively.

In connection with certain acquisitions, the Company issued shares of the acquired company to its local management and recorded $0.1 and $0.3 million of stock based compensation during 2016 and 2015, 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 ASU 2014-09, “Revenue from Contracts with Customers”, 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 standard may be applied retrospectively to each prior period presented or retrospectively with the cumulative effect recognized as of the date of initial application. On July 9, 2015, the FASB approved the deferral of the new standard's effective date by one year. The new standard is now effective for annual reporting periods beginning after December 15, 2017. The FASB will permit companies to adopt the new standard early, but not before the original effective date of annual reporting periods beginning after December 15, 2016 In March 2016, the FASB issued ASU 2016-08, “Principal Versus Agent Considerations (Reporting Revenue Gross Versus Net).” In April 2016, the FASB issued ASU 2016-10, “Identifying Performance Obligations and Licensing.” In May 2016, the FASB issued ASU 2016-12, “Narrow-Scope Improvements and Practical Expedients.” In December 2016, the FASB issued Accounting Standards Update 2016-20, “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers.” These updates provide additional adoption guidance and clarification to ASU 2014-09. The amendments must be adopted concurrently. The Company is currently evaluating the overall impact and the method of adoption of ASU 2014-09, including the latest developments from the Transition Resources Group. Areas most likely impacted may include, but not be limited to, the following: the timing of revenue recognition and the allocation of revenue between equipment and services, In addition, the new standard may require certain amounts be recorded in accounts receivable and deferred revenues on the balance sheet and enhanced disclosures around performance obligations. The Company’s final determination of the adoption methodology will depend on a number of factors, such as the significance of the impact of the new standard on the financial results, data and information available at recently acquired businesses, system readiness and the ability to accumulate and analyze the information necessary to assess the impact on prior period financial statements and new disclosure requirements. The Company does not currently know or cannot reasonably estimate quantitative information related to the impact of the new standard on its Consolidated Financial Statements. The Company will adopt the standard on January 1, 2018.

In August 2014, the FASB issued ASU 2014-15, “Presentation of Financial Statements - Going Concern (Subtopic 205-40),” which requires management to assess a company’s ability to continue as a going concern and to provide related footnote disclosures in certain circumstances. ASU 2014-15 is effective for annual reporting periods ending after December 15, 2016. Early application is permitted. The Company adopted this guidance for the fourth quarter ended December 31, 2016. The adoption of this guidance did not impact the Company’s Consolidated Financial Statements.

In April 2015, the FASB issued ASU 2015-03, “Simplifying the Presentation of Debt Issuance Costs”, which amends the presentation of debt issuance costs on the consolidated balance sheet. Under the new guidance, debt issuance costs are presented as a direct deduction from the carrying amount of the debt liability rather than as an asset. The Company retrospectively adopted ASU 2015-03 on January 1, 2016 and determined that its adoption had no impact on its consolidated financial statements and related disclosures. This is a change in accounting principle.

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 that software license. The new guidance does not change the accounting for a customer’s accounting for service contracts. The standard is effective beginning January 1, 2017, with early adoption permitted, and may be applied prospectively or retrospectively. The Company does not expect ASU 2015-05 to have a material impact on its consolidated financial position, results of operations or cash flows.

In September 2015, the FASB issued ASU 2015-16, “Simplifying the Accounting for Measurement-Period Adjustments”, which provides updated guidance related to simplifying the accounting for measurement period adjustments related to business combinations. The amended guidance eliminates the requirement to retrospectively account for adjustments made during the measurement period. The standard was adopted January 1, 2016, and did not have a material impact on its consolidated financial position, results of operations or cash flows.

In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)”, which provides 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 is currently evaluating the impact of the new guidance on its Consolidated 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. ASU 2016-09 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2016, and early adoption is permitted. The Company is currently evaluating the impact that the standard will have on its Consolidated Financial Statements.

In August 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments,” which provides further clarification on eight cash flow classification issues. The standard further clarifies the classification of the following: (i) debt prepayment or debt extinguishment costs; (ii) settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; (iii) contingent consideration payments made after a business combination; (iv) proceeds from the settlement of insurance claims; (v) proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies; (vi) distributions received from equity method investees; (vii) beneficial interests in securitization transactions; and (viii) separately identifiable cash flows and application of the predominance principle. ASU 2016-15 will become effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017, with early adoption permitted. ASU 2016-15 should be applied using a retrospective transition method for each period presented. The Company is currently evaluating the impact of the new standard on our consolidated financial statements.

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 for 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 will be effective for the Company on January 1, 2018. The Company is currently evaluating the potential impact that this standard may have on its results of operations.

In November 2016, the FASB issued Accounting Standards Update 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash,” or 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. ASU 2016-18 is effective for annual reporting periods, including interim periods within those periods, beginning after December 15, 2017, with early adoption permitted. The Company is currently evaluation the potential impact that this standard may have on its Consolidated Financial Statements.

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. If it’s not met, 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 for the fourth quarter of 2016. The standard will result in the Company 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 is currently evaluation the potential impact that this standard may have on its Consolidated Financial Statements.

ACQUISITIONS AND DISPOSITIONS

12 Months Ended

Dec. 31, 2016

ACQUISITIONS AND DISPOSITIONS

ACQUISITIONS AND DISPOSITIONS

3. ACQUISITIONS AND DISPOSITIONS

International Telecom

One Communications (formerly KeyTech Limited)

On May 3, 2016, the Company completed our acquisition of a controlling interest in KeyTech Limited (“KeyTech”), 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 under the “Logic” name in Bermuda and the Cayman Islands. Subsequent to the completion of our acquisition of KeyTech, KeyTech changed its name, and the “Logic” name, to One Communications Ltd (“One Communications”). Prior to our acquisition, One Communications also owned a minority interest of approximately 43% in the Company’s consolidated subsidiary, Bermuda Digital Communications Ltd. (“BDC”), which provides wireless services in Bermuda under the “CellOne” name. 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 and 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 our financial statements in our 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 - KeyTech	$ 34,518
Cash consideration - BDC	7,045
Total consideration transferred	41,563
Non-controlling interests - KeyTech	32,909
Total value to allocate	$ 74,472
Value to allocate KeyTech	67,427
Value to allocate - BDC	7,045

Purchase price allocation KeyTech:
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 KeyTech 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 approximately 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 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. Both companies realized that their combined resources would accelerate the transformation of both companies to better serve customers in these markets. The bargain purchase gain is included in operating income in the accompanying income statement 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 Communication 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 were incurred during the year ended December 31, 2016.

Innovative

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 Innovative group of companies operating video services, Internet, wireless and landline services in the U.S. Virgin Islands, British Virgin Islands and St. Maarten (“Innovative”), from the National Rural Utilities Cooperative Finance Corporation (“CFC”). The Company acquired the Innovative operations for a contractual purchase price of $145.0 million, reduced by purchase price adjustments of $5.3 million (the “Innovative 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 $51.9 million of the purchase price in cash, subsequently paid $22.5 million to fund Innovative’s pension in the fourth quarter of 2016, and recorded $5.3 million as restricted cash to satisfy Innovative’s other postretirement benefit plans. Following the purchase, the Company’s current operations in the U.S. Virgin Islands under the “Choice” name will be combined with Innovative to deliver residential and business subscribers a full range of telecommunications and media services. On July 1, 2016, the Company began consolidating the results of Innovative within its financial statements in its International Telecom segment.

The Innovative Transaction was accounted as a business combination in accordance with ASC 805. The consideration transferred 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 agreeing to subsequently settle assumed pension and other postretirement benefit liabilities of $27.8 million. As of December 31 2016, the Company transferred consideration of $111.9 million which was allocated to the assets acquired and liabilities assumed at their estimated fair values as of the date of the acquisition. The final purchase price represents a reduction of $0.4 million from the preliminary purchase price. The decrease was due to settlement of working capital adjustments. The table below represents the allocation of the consideration transferred to the net assets of Innovative 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. 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 the 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 benefit obligation.

The goodwill generated from the Innovative 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 acquired Innovative’s pension and other postretirement benefit plans as part of the transaction. The plans cover employees located in the U.S. Virgin Islands and consist of noncontributory defined benefit pension plans and noncontributory defined medical, dental, vision and life benefit plans. As noted above, the contractual purchase price included an adjustment related to the funded status of Innovative’s pension and other postretirement benefit plans. As contemplated by the transaction, the Company contributed approximately $22.5 million during the fourth quarter of 2016 to Innovative’s pension plans. This payment is recorded as a cash outflow from operations in the statement of cash flows. At December 31, 2016, the Company held $5.1 million of restricted cash equal to the unfunded status of the other postretirement benefit plans. The cash is restricted due to the Company’s intent to use the cash to satisfy future postretirement benefit obligations and the specific nature of the commitment

The Company’s income statement for year ended December 31, 2016 includes $53.0 million of revenue and $1.5 million of income before taxes attributable to the Innovative Transaction. 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 were incurred during the year ended December 31, 2016.

Disposition

In September 2016, the Company entered into an agreement to sell the Innovative cable operations located in St.Maarten. The transaction was complete on January 3, 2017 and will be recorded in the Company’s 2017 results. The Company does not expect to recognize a gain or loss on the transaction. Since the disposition does not relate to a strategic shift in our operations, the subsidiary’s historical results and financial position are presented within continuing operations.

During March 2015, the Company sold certain assets and liabilities of our Turks and Caicos business in its International Telecom segment. As a result, we recorded a net loss of approximately $19.9 million, which is included in other income (expense) on its statement of operations, arising from the deconsolidation of non-controlling interests of $20.0 million partially offset by a gain of $0.1 million arising from an excess of the sales proceeds over the carrying value of net assets disposed of. Since the disposition does not relate to a strategic shift in our operations, the subsidiary’s historical results and financial position are presented within continuing operations.

Deconsolidation of Subsidiary

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 which generated $2.8 million in revenues during the year ended December 31, 2016. The Company did not recognize a gain or loss on the transaction.

Pro forma Results

The following table reflects unaudited pro forma operating results of the Company for the year ended December 31, 2016 and December 31, 2015 assuming that the One Communications and Innovative Transactions occurred at the beginning of each period presented. The pro forma amounts adjust One Communications’ and Innovative’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’ financial structure related to the transaction. One Communications’ results reflect the retirement of $24.7 million of debt. Innovative’s results reflect the retirement of $185.8 million of debt and the addition of $60 million of purchase price debt. Finally, ATN’s results were adjusted to reflect ATN’s incremental ownership in BDC. The pro forma results do not include the Company’s US Telecom or Renewable Energy acquisitions because they are immaterial both individually and in the aggregate to the Company’s historical results.

The pro forma results for the year ended December 31, 2016 include $5.4 million of impairment charges, $4.3 million recorded by One Communications and $1.1 million recorded by Innovative. 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 Innovative. 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.

U.S. Telecom

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 liability, and $0.7 million to other net liabilities, resulting in goodwill of $3.1 million. The deferred tax liability and goodwill increased by $2.7 million from the preliminary purchase price allocation due to a measurement period adjustment. The adjustment had no impact on the Company’s income. 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.

Pending Disposition

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 is subject to customary closing conditions.

As a result of this transaction and the recent developments in the market, 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 assessment 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 asset group represents the lowest level of assets with identifiable independent cash flows. 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 following the two step impairment test. The carrying amount of the reporting unit exceeded its fair value, after considering the $3.6 million asset impairment. The second step of the goodwill impairment test compares the implied fair value of the reporting unit’s goodwill with the carrying amount of goodwill to measure the amount of impairment loss. The impairment loss equaled $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.

Renewable Energy

Vibrant Energy

On April 7, 2016, the Company completed its acquisition of a solar power development portfolio in India from Armstrong Energy Global Limited (“Armstrong”), a well-known developer, builder, and owner of solar farms (the “Vibrant Energy Acquisition”). The business operates under the name Vibrant Energy. The Company also retained several Armstrong employees in the UK and India who are employed by the Company to oversee the development, construction and operation of the India solar projects. 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 cash 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 includes $3.5 million paid and $2.7 million payable at future dates, which is contingent upon the passage of time and achievement of initial production milestones which are considered probable. 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.

For the year ended December 31, 2016, the Vibrant Energy Acquisition accounted for $0.4 million of the Company’s revenue. 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 were incurred during the year ended December 31, 2016. Results of operations for the business are not material to the Company’s historical results of operations.

DISCONTINUED OPERATIONS - SALE OF U.S. RETAIL WIRELESS BUSINESS	12 Months Ended
	Dec. 31, 2016
DISCONTINUED OPERATIONS - SALE OF U.S. RETAIL WIRELESS BUSINESS
DISCONTINUED OPERATIONS - SALE OF U.S. RETAIL WIRELESS BUSINESS	4. DISCONTINUED OPERATIONS—SALE OF U.S. RETAIL WIRELESS BUSINESS On September 20, 2013, the Federal Communications Commission announced its approval of the previously announced proposed sale of the Company’s U.S. retail wireless business operated under the Alltel name to AT&T Mobility LLC for approximately $780.0 million in cash plus $16.8 million in working capital. The Company previously reported the operations of this business within its U.S. Wireless segment. During 2014 and 2015, the Company recognized an additional $1.1 million of gain relating to changes in certain estimates.

- Definition

The entire disclosure 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721533-107759

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
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+ Details

ACCOUNTS RECEIVABLE

12 Months Ended

Dec. 31, 2016

ACCOUNTS RECEIVABLE:

ACCOUNTS RECEIVABLE:

5. ACCOUNTS RECEIVABLE:

As of December 31, 2016 and 2015, accounts receivable consist of the following (in thousands):


	2016		2015
Retail	$	36,026	$	23,805
Wholesale		22,502		24,341
Other		40		168
Accounts receivable		58,568		48,314
Less: allowance for doubtful accounts		(13,149)		(9,294)
Total accounts receivable, net	$	45,419	$	39,020

- 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, 2016

FIXED ASSETS:

FIXED ASSETS:

6. FIXED ASSETS:

As of December 31, 2016 and 2015, property, plant and equipment consisted of the following (in thousands):


	Useful Life
	(in Years)	2016		2015
Telecommunications equipment and towers	5 -15	$	802,415	$	553,237
Solar assets	20-23		115,932		111,446
Office and computer equipment	3 -10		44,147		54,665
Buildings	15-39		43,609		18,540
Transportation vehicles	3 -10		12,043		8,882
Leasehold improvements	Shorter of useful life or lease term		325		11,592


Land	—		10,242		1,198
Furniture and fixtures	5 -10		7,657		6,584
Total property, plant and equipment			1,036,370		766,144
Construction in progress			101,992		41,103
Total property, plant and equipment			1,138,362		807,247
Less: Accumulated depreciation			(490,650)		(433,744)
Net fixed assets		$	647,712		373,503

Depreciation and amortization of fixed assets, using the straight‑line method over the assets’ estimated useful life, for the years ended December 31, 2016, 2015 and 2014 was $73.3 million, $55.9 million and $50.3 million, respectively. Included within telecommunication equipment and towers are assets related to Indefeasible Rights of Use under capital lease with a cost of $13.8 million and $2.7 million and net book value of and $12.4 million and $1.8 million, as of December 31, 2016 and 2015, respectively. Remaining amounts due under the IRUs are $1.2 million and $0.0 million as of December 31, 2016 and 2015, respectively.

During the year ended December 31, 2015, we sold certain network assets and telecommunications licenses in our U.S. Telecom segment and recognized a gain on such disposition of $2.8 million.

For the years ended December 31, 2016, 2015 and 2014, amounts of capital expenditures were offset by grants of $2.3 million, $2.6 million and $2.3 million, respectively.

GOODWILL AND INTANGIBLE ASSETS

12 Months Ended

Dec. 31, 2016

GOODWILL AND INTANGIBLE ASSETS

GOODWILL AND INTANGIBLE ASSETS

7. GOODWILL AND INTANGIBLE ASSETS

Goodwill

The Company tests goodwill for impairment on an annual basis, which has been determined to be as of December 31 of each fiscal year. 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 employs both qualitative and quantitative tests of its goodwill. The company tests goodwill at the reporting unit which is one level below its operating segments. During 2016, the Company performed a qualitative assessment for some of the Company’s reporting units and determined there were no indicators of impairment. For the other reporting units in 2016, goodwill was evaluated using a quantitative model. During 2015, the Company performed a qualitative assessment on goodwill to determine whether a quantitative assessment was necessary and determined there were no indicators of potential impairment. In 2014, the Company performed a qualitative assessment for some of the Company’s reporting units and determined there were no indicators of impairment. For the other reporting units in 2014, goodwill was evaluated using a quantitative model. The quantitative test for goodwill impairment is determined using a two‑step process. The first step involves a comparison of the estimated fair value of a reporting unit to its carrying amount, including goodwill. In performing the first step, 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. If the estimated fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is not impaired and the second step of the impairment test is not necessary. If the carrying amount of a reporting unit exceeds its estimated fair value, then the second step of the goodwill impairment test must be performed.

The second step of our quantitative test for goodwill impairment compares the implied fair value of the reporting unit’s goodwill with its carrying amount of goodwill to measure the amount of impairment loss, if any. The implied fair value of goodwill is determined in the same manner as the amount of goodwill recognized in a business combination, whereby the estimated fair value of the reporting unit is allocated to all of the assets and liabilities of that unit (including any unrecognized intangible assets) as if the reporting unit had been acquired in a business combination and the fair value of the reporting unit was the purchase price paid. If the carrying amount of the reporting unit’s goodwill exceeds the implied fair value of that goodwill, an impairment loss is recognized in an amount equal to that excess.

As a result of this transaction and the recent developments in the market, 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 following the two step impairment test. The carrying amount of the reporting unit exceeded its fair value, after considering the $3.6 million asset impairment. The second step of the goodwill impairment test compares the implied fair value of the reporting unit’s goodwill with the carrying amount of goodwill to measure the amount of impairment loss. The impairment loss equaled $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 Company performed its annual impairment assessments of its goodwill as of December 31, 2016 and determined that no impairment charges were required, as the fair value of each reporting unit exceeded its book value. Accordingly, there were additional changes in the carrying amounts of goodwill during that year.

The table below disclosed goodwill recorded in each of the Company’s segments and accumulated impairment changes through during 2016. There were no changes to the Company’s goodwill balances from January 1, 2014 through December 31, 2015 (in thousands):


	U.S.		International			Renewable
	Telecom		Telecom		Energy		Consolidated
Balance at December 31, 2015	$	39,639	$	5,438	$	—	$	45,077
Acquisitions		3,121		20,586		3,279		26,986
Deconsolidation of Subsidiary		—		(1,698)		—		(1,698)
Impairment		(7,491)		—		—		(7,491)
Balance at December 31, 2016
Gross		42,759		24,326		3,279		70,364
Accumulated Impairment		(7,491)		—		—		(7,491)
Net	$	35,268	$	24,326	$	3,279	$	62,873

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 performed quantitative and qualitative assessments for its annual impairment assessment of substantially all of its indefinite lived telecommunications licenses as of December 31, 2016 and 2015 and determined that there were no indications of potential impairments.

The changes in the carrying amount of the Company’s telecommunications licenses, by operating segment, for the three years ended December 31, 2016 were as follows (in thousands):


	U.S.		Int'l
	Telecom		Telecom		Consolidated
Balance at December 31, 2014	$	24,944	$	19,146	$	44,090
Amortization		—		(622)		(622)
Balance at December 31, 2015	$	24,944	$	18,524	$	43,468
Deconsolidation of subsidiary		—		(2,178)		(2,178)
Acquired licenses		—		7,623		7,623
Amortization		—		(622)		(622)
Balance at December 31, 2016	$	24,944	$	23,347	$	48,291

The licenses acquired during 2016 were acquired in the Innovative Transaction and are expected to be available for use into perpetuity. A subsidiary in the Company’s International Telecom segment was amortizing one of its telecommunications licenses until the date of its deconsolidation in December 2016.

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 $2.0 million, $0.4 million, and $0.3 million of amortization related to customer relationships during year ended December 31, 2016, 2015, and 2014, respectfully.

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


	Future Amortization
2017	$	3,281
2018		2,411
2019		1,897
2020		1,528
2021		1,300
Thereafter		4,612
Total	$	15,029

Other Intangible Assets

The Company held other intangibles of $4.9 million consisting of $3.0 million of franchise rights and $1.9 million of tradenames in its International Telecom segment. These assets are recorded in other assets on the Company’s balance sheet. In 2016, we assessed the value of a tradename and concluded that its book value exceeded its fair value. As a result, we recorded a non-cash impairment charge of $0.3 million during the year ended December 31, 2016

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

LONG-TERM DEBT	12 Months Ended
LONG-TERM DEBT	Dec. 31, 2016
LONG-TERM DEBT
LONG-TERM DEBT	8. LONG‑TERM DEBT On December 19, 2014, the Company amended and restated its then existing 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. Amounts the Company may borrow under the Credit Facility bear interest at a rate equal to, at its 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. On January 11, 2016, the Company amended the Credit Facility (the “Amendment”) to provide for lender consent to, among other actions, (i) the contribution by the Company of all of its equity interests in ATN Bermuda Holdings, Ltd. to ATN Overseas Holdings, Ltd. in connection with the One Communications Transaction, a one-time, non-pro rata cash distribution by One Communications in an aggregate amount not to exceed $13.0 million to certain of One Communications’ shareholders; and (ii) the incurrence by certain subsidiaries of the Company of secured debt in an aggregate principal amount not to exceed $60.0 million in connection with the Company’s option to finance a portion of the Innovative Transaction. The Amendment increases the amount the Company is permitted to invest in “unrestricted” subsidiaries of the Company, which are not subject to the covenants of the Credit Facility, from $275.0 million to $400.0 million (as such increased amount shall be reduced from time to time by the aggregate amount of certain dividend payments to the Company’s stockholders). The Amendment also provides for the incurrence by the Company of incremental term loan facilities, when combined with increases to revolving loan commitments under the Credit Facility, in an aggregate amount not to exceed $200.0 million, which facilities shall be subject to certain conditions, including pro forma compliance with the total net leverage ratio financial covenant under the Credit Facility. 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 by the Company limiting additional indebtedness, liens, guaranties, mergers and consolidations, substantial asset sales, investments and loans, sale and leasebacks, transactions with affiliates and fundamental changes. In addition, the Credit Facility contains a financial covenant by us that imposes a maximum ratio of indebtedness to EBITDA. As of December 31, 2016, the Company was in compliance with all of the financial covenants of the Credit Facility. In addition, the Credit Facility restricts our Total Net Leverage (maximum ratio of indebtedness minus unrestricted cash to EBITDA). As of December 31, 2016, the Company had no borrowings under the Credit Facility and approximately $10.6 million of outstanding letters of credit. 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 bears interest at 11.3%, matures in 2027, and is secured by certain solar facilities. Repayment of the Original Ahana Debt with PSE&G can be made in either cash or solar renewable energy credits (“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 has 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”). Interest and principal are payable semi-annually beginning on March 31, 2017, until the respective maturity dates of March 31, 2029 (for the Series A Notes) and September 30, 2031 (for the Series B Notes). Cash flows generated by the solar projects that secure the Series A Notes and Series B Notes are only available for payment of such debt and are not available to pay other obligations or the claims of the creditors of Ahana or its subsidiaries. However, subject to certain restrictions, Ahana Operations holds 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 and Series B Notes are secured by certain assets of Ahana and are guaranteed by certain of its subsidiaries. A portion of the proceeds from the issuances of the Series A Notes and Series B Notes were used to repay the Original Ahana Debt in full except for the PSE &G Loan which remained outstanding after the refinancing. As of December 31, 2016, $2.5 million of the Original Ahana Debt and $65.8 million of the Series A Notes and Series B Notes remained outstanding. One Communications Debt In connection with the One Communications Transaction 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 matures in 2021, bears interest of the three-month LIBOR plus a margin of 3.25%, and repayment is made quarterly until maturity. The debt is secured by the property and assets of certain One Communications subsidiaries. As of December 31, 2016, $32.1 million of the One Communications Debt remained outstanding. Innovative Debt The Company funded the Innovative Acquisition with $51.0 million in cash and financed the remaining $60.0 million of the purchase price with a loan from an affiliate of the seller, the Rural Telephone Finance Cooperative. The Company paid a fee of $0.9 million to lock the interest rate at 4% per annum over the term of the debt. The fee was recorded as a reduction to the debt carrying amount and will be amortized over the life of the loan. Interest is paid quarterly and principal repayment is not required until maturity on July 1, 2026. The debt is secured by certain assets of the Company’s Innovative subsidiary. As of December 31, 2016, $60.0 million of the Innovative Debt remained outstanding and $0.8 million of the rate lock fee were unamortized.

GOVERNMENT GRANTS	12 Months Ended
GOVERNMENT GRANTS	Dec. 31, 2016
GOVERNMENT GRANTS
GOVERNMENT GRANTS	9. GOVERNMENT GRANTS The Company has received funding from the U.S. Government and its agencies under Stimulus and Universal Services Fund programs. These are generally designed to fund telecommunications infrastructure expansion into rural or underserved areas of the United States. The fund programs are evaluated to determine if they represent funding related to capital expenditures (capital grants) or operating activities (income grants). Phase I Mobility Fund Grants As part of the Federal Communications Commission’s (“FCC”) reform of its Universal Service Fund (“USF”) program, which previously provided support to carriers seeking to offer telecommunications services in high-cost areas and to low-income households, 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. In August 2013 and October 2014, the Company received FCC final approvals for $21.7 million and $2.4 million, respectively, of Phase I Mobility Fund support to its wholesale wireless business (the “Mobility Funds”), to expand voice and broadband networks in certain geographic areas in order to offer either 3G or 4G coverage. As part of the receipt of the Mobility Funds, the Company committed to comply with certain additional FCC construction and other requirements. A portion of these funds will be used to offset network capital costs and a portion is used to offset the costs of supporting the networks for a period of five years from the award date. In connection with the Company’s application for the Mobility Funds, the Company has issued approximately $10.6 million in letters of credit to the Universal Service Administrative Company (“USAC”) to secure these obligations. If the Company fails to comply with any of the terms and conditions upon which the Mobility Funds were granted, or if the Company loses eligibility for the Mobility Funds, USAC will be entitled to draw the entire amount of the letter of credit applicable to the affected project plus penalties and may disqualify the Company from the receipt of additional Mobility Fund support. The Mobility Funds projects and their results are included within the Company’s U.S. Telecom segment. As of December 31 2016, the Company had received approximately $19.7 million in Mobility Funds. Of these funds, $5.8 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 offsets operating expenses, of which $4.6 million has been recorded to date, $3.4 million is recorded within long term liabilities, and the remaining $5.8 million is recorded within current liabilities in the Company’s consolidated balance sheet as of December 31, 2016. The balance sheet presentation is based on the timing of the expected usage of the funds which will reduce future operations expenses

EQUITY

12 Months Ended

Dec. 31, 2016

EQUITY

EQUITY

10. EQUITY

Common Stock

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

Treasury Stock

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

On September 19, 2016, our Board of Directors authorized the repurchase of up to $50.0 million of our 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, 2016, we have $49.9 million available to be repurchased under the 2016 Repurchase Plan.

During the years ended December 31, 2016, 2015 and 2014, 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
2016	32,407	$	2,195	$	64.72
2015	—		—		—
2014	—		—		—

During the years ended December 31, 2016, 2015 and 2014, 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
2016	38,279	$	2,775	$	72.50
2015	37,567		2,705		72.01
2014	34,293		2,160		63.01

Stock‑Based Compensation

The Company has 2,000,000 shares reserved for the grant of stock options, restricted stock, restricted stock units, stock equivalents and awards of shares of common stock that are not subject to restrictions or forfeiture.

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, 2016 and 2015:


	Year Ended December 31, 2016
				Weighted Average
		Weighted Avg.		Remaining
	Number of	Exercise		Contractual	Aggregate
	Options	Price		Term (Years)	Intrinsic Value
Outstanding at January 1, 2016	268,875	$	38.64
Granted	—		—
Exercised	(43,053)		32.70
Outstanding at December 31, 2016	225,822		39.77	3.9	$	9,114,963
Vested and expected to vest at December 31, 2016	225,554		39.73	3.9	$	9,112,630
Exercisable at December 31, 2016	222,072		39.23	3.8	$	9,082,338


	Year Ended December 31, 2015
				Weighted Average
				Remaining
	Number of	Weighted Avg.		Contractual	Aggregate
	Options	Exercise Price		Term (Years)	Intrinsic Value
Outstanding at January 1, 2015	351,253	$	36.55
Granted	5,000		71.43
Exercised	(87,378)		32.14
Outstanding at December 31, 2015	268,875		38.64	4.7	$	10,646,006
Vested and expected to vest at December 31, 2015	268,011		38.53	4.7	$	10,640,134
Exercisable at December 31, 2015	248,875		38.05	4.5	$	9,998,956

The unvested options as of December 31, 2016 represent $0.1 million in unamortized stock‑based compensation which will be recognized over a weighted average term of 2.6 years.

The following table summarizes information relating to options granted and exercised during the years ended December 31, 2016, 2015 and 2014 (in thousands, except fair value of options granted data):


	2016		2015		2014
Weighted-average fair value of options granted	$	—	$	30.70	$	N/A
Aggregate intrinsic value of options exercised		1,591		3,488		1,098
Cash proceeds received upon exercise of options		1,060		1,999		1,621
Excess tax benefits from share-based compensation		591		1,423		513

The aggregate intrinsic value represents the total pre‑tax intrinsic value (the difference between our 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 our common stock.

The Company did not grant any options during 2016 or 2014. The estimated fair value of the options granted during 2015 were determined using a Black Scholes option pricing model, based on the following weighted average assumptions:




Risk-free interest rate	1.55	%
Expected dividend yield	1.76	%
Expected life	6.25	years
Expected volatility	51.85	%

The Company recognized $0.1 million, $0.9 million and $1.4 million, respectively, of stock compensation expense relating to the granted options during 2016, 2015, and 2014, 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, 2016:


		Weighted Avg.
	Shares	Fair Value
Unvested as of January 1, 2016	218,401	$	60.60
Granted	100,005		73.34
Forfeited	(1,125)		66.44
Vested and issued	(88,241)		58.01
Unvested as of December 31, 2016	229,040	$	67.13

The following table summarizes restricted stock activity during the year ended December 31, 2015:


		Weighted Avg.
	Shares	Fair Value
Unvested as of January 1, 2015	195,143	$	55.13
Granted	93,864		66.26
Forfeited	(1,687)		65.18
Vested and issued	(68,919)		52.70
Unvested as of December 31, 2015	218,401	$	60.60

In connection with the grant of restricted shares, the Company recognized $6.2 million, $4.3 million and $3.4 million of compensation expense within its income statements for the years ended December 31, 2016, 2015, and 2014, respectively. In addition, the Company recognized $0.1 million of compensation expense within its income statement for the year ended December 31, 2016 for shares of the Company’s subsidiaries granted to the management team of those subsidiaries.

The unvested shares as of December 31, 2016 represent $11.2 million in unamortized stock based compensation which will be recognized over a weighted average period of 2.5 years.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 4.E)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(31))
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 4.C)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(d))
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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-Subparagraph (SX 210.3-04)
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

+ Details

INCOME TAXES

12 Months Ended

Dec. 31, 2016

INCOME TAXES

INCOME TAXES

11. INCOME TAXES

The components of income before income taxes for the years ended December 31, 2016, 2015 and 2014 are as follows (in thousands):


	2016		2015		2014
Domestic	$	28,047	$	50,563	$	57,767
Foreign		17,327		5,638		28,401
Total	$	45,374	$	56,201	$	86,168

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, 2016, 2015, and 2014 (in thousands):


	2016		2015		2014
Tax computed at statutory U.S. federal income tax rates	$	15,782	$	19,652	$	30,160
Non controlling interest		(2,893)		(2,807)		(1,229)
Foreign tax rate differential		(3,074)		1,659		(5,757)
Over (under) provided in prior periods		1,069		652		(401)
Nondeductible expenses		1,134		1,113		757
Goodwill Impairment		2,622		—		—
Capitalized transactions costs		3,138		—		—
Change in tax reserves		2,561		2,564		2,153
State Taxes, net of federal benefit		1,853		935		1,252
Change in valuation allowance		(7,292)		(5,949)		(2,549)
Foreign tax credit expiration		4,179		6,396		2,999
Other, net		2,081		(78)		763
Total Income Tax Expense	$	21,160	$	24,137	$	28,148

The components of income tax expense (benefit) for the years ended December 31, 2016, 2015 and 2014 are as follows (in thousands):

\
	2016		2015		2014
Current:
United States—Federal	$	15,763	$	(1,308)	$	14,761
United States—State		505		(383)		1,347
Foreign		10,528		7,959		12,153
Total current income tax expense	$	26,796	$	6,268	$	28,261
Deferred:
United States—Federal	$	(1,880)	$	16,760	$	5,205
United States—State		(291)		1,636		466
Foreign		(3,465)		(527)		(5,784)
Total deferred income tax expense (benefit)		(5,636)		17,869		(113)
Consolidated:
United States—Federal	$	13,883	$	15,452	$	19,966
United States—State		214		1,253		1,813
Foreign		7,063		7,432		6,369
Total income tax expense	$	21,160	$	24,137	$	28,148

The significant components of deferred tax assets and liabilities are as follows as of December 31, 2016 and 2015 (in thousands):


	2016		2015
Deferred tax assets:
Receivables reserve	$	1,470	$	702
Temporary differences not currently deductible for tax		8,918		7,236
Deferred compensation		2,461		2,135
Foreign tax credit carryforwards		—		4,180
Pension		1,085		1,153
Net operating losses		29,571		4,463
Total deferred tax asset		43,505		19,869
Deferred tax liabilities:
Property, plant and equipment, net	$	41,136	$	43,718
Intangible assets, net		6,122		13,743
Total deferred tax liabilities		47,258		57,461

Valuation allowance		(42,462)		(7,814)

Net deferred tax liabilities	$	(46,215)	$	(45,406)

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


	2016		2015
Deferred tax assets:
Current	$	—	$	—
Long term		407		—
Total deferred tax asset	$	407	$	—
Deferred tax liabilities:
Current	$	—	$	—
Long term		(46,622)		(45,406)
Total deferred tax liabilities	$	(46,622)	$	(45,406)
Net deferred tax liabilities	$	(46,215)	$	(45,406)

As of December 31, 2016, additional components within the reconciliation of the tax expense from statutory income rates became significant to the financial statements; therefore the presentation of the 2015 and 2014 balances have been adjusted accordingly for comparative purposes.

As of December 31, 2016, the Company estimated that it had gross federal, state and foreign net operating loss (“NOL”) carryforwards of $3.3 million, $8.9 million and $74.7 million respectively. Of these, $83.5 million will expire between 2017 and 2036 and $3.4 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, 2016. 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 state and foreign deferred taxes would not be realized.

In recognition of this risk at December 31, 2015, the Company provided a valuation allowance of $2.0 million and $1.7 million for its state and foreign NOL carryforwards, respectively. Some of the foreign entities acquired in 2016 maintained a full valuation allowance on their NOLs and other deferred tax assets. Where the business combination did not provide any positive evidence for which the Company could recognize these assets, a $41.9 million valuation allowance was established as part of purchase accounting. At December 31, 2016, our state and foreign NOL carryforward valuation allowance was $0.5 million and $27.8 million for state and foreign NOL carryforwards, respectively. The remaining valuation allowance of $14.1 million has been applied to the other foreign deferred taxes for entities with a full valuation allowance at December 31, 2016.

As of December 31, 2015, the Company had $4.1 million of foreign tax credits, with a corresponding valuation allowance, which fully expired during the year ended December 31, 2016 and the valuation allowance was released.

The Company has approximately $288.6 million of undistributed earnings of its foreign subsidiaries that as of December 31, 2016 are considered to be indefinitely reinvested and accordingly, no U.S. federal or state income taxes have been provided thereon. Determination of the amount of unrecognized deferred U.S. income tax liability is not practicable because of the complexities associated with its hypothetical calculation as such liability, if any, is dependent on circumstances existing if and when such remittance occurs.

The Company had net unrecognized tax benefits (including interest and penalty) of $20.0 million as of December 31, 2016, $18.9 million as of December 31, 2015 and, $16.5 million as of December 31, 2014. The net increase of the reserve during the year ended December 31, 2016 was attributable to an increase in tax positions for prior periods of $1.4 million, an increase in tax positions for the current period of $2.3 million, partially offset by a settlement of a prior year position of $0.8 million, and lapse in statutes of limitation of $1.8 million.

The following shows the activity related to unrecognized tax benefits (not including interest and penalty) during the three years ended December 31, 2016 (in thousands):


Gross unrecognized tax benefits at December 31, 2013		14,050
Increase in unrecognized tax benefits taken during a prior period		177
Increase in unrecognized tax benefits taken during the current period		1,498
Lapse in statute of limitations		(226)
Settlements		—
Gross unrecognized tax benefits at December 31, 2014		15,499
Increase in unrecognized tax benefits taken during a prior period		—
Increase in unrecognized tax benefits taken during the current period		1,717
Lapse in statute of limitations		—
Settlements		—
Gross unrecognized uncertain 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

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 $2.1 million as of December 31, 2016, and $1.7 million as of December 31, 2015, and $1.0 million as of December 31, 2014.

All $20.0 million of unrecognized tax benefits (including interest and penalty) would affect 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 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, 2016

RETIREMENT PLANS

RETIREMENT PLANS

12. RETIREMENT PLANS

The Company has a noncontributory defined benefit pension plan for eligible employees of its GTT and Innovative 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 Innovative subsidiary who meet certain age and employment criteria. The Company acquired the Innovative plans as a result of the July 2016 Innovative Acquisition. Company contributions to fund the pension plans are intended to provide not only for benefits attributed for service to date but also for those expected to be earned in the future. The Company’s funding policy is to contribute to the plan such amounts as are actuarially determined to meet funding requirements. The benefits are based on the participants’ average salary or hourly wages during the last three years of employment and credited service years. 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, 2016, 2015 and 2014:


	2016		2015		2014
Discount Rate – Pension Benefit	4.3	%	5.8	%	5.8	%
Discount Rate – Postretirement Benefit	3.9	%	N/A		N/A
Annual salary increase	6.5	%	6.5	%	6.5	%
Expected long-term return on plan assets	6.3	%	6.5	%	7.0	%

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 average rate of salary increases. The assumption is not applicable to the Innovative 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 2017 assumed medical health care cost trend rate is 5.8% trending to an ultimate rate of 4.5% in 2075. The 2017 assumed dental care cost trend rate is 4.0% trending to an ultimate rate of 2.0% in 2030. 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:


	Accumulated postretirement benefit obligation			Service cost plus interest cost

At trend		5,108		194
At trend + 1%		5,487		214
Dollar Impact		379		20
Percentage Impact		7.4	%	10.3	%
At trend – 1%		4,775		177
Dollar Impact		(333)		(17)
Percentage Impact		(6.5)	%	(8.8)	%

Changes during the year in the projected benefit obligations and in the fair value of plan assets are as follows for 2016 and 2015 (in thousands):


	2016				2015

	Pension Benefits		Postretirement Benefits		Pension Benefits		Postretirement Benefits
Projected benefit obligations:
Balance at beginning of year:	$	14,400	$	—	$	14,093	$	—
Innovative Acquisition		69,178		5,472		—		—
Service cost		1,308		97		652		—
Interest cost		2,002		97		766		—
Curtailment		128		—		—		—
Benefits and settlements paid		(6,445)		(206)		(1,329)		—
Actuarial (gain) loss		(4,437)		(325)		218		—
Experience loss		(15)		(27)		—		—
Balance at end of year	$	76,119	$	5,108	$	14,400	$	—
Plan net assets:
Balance at beginning of year:	$	11,946	$	—	$	13,165	$	—
Innovative Acquisition		45,116		—		—		—
Actual return on plan assets		1,717		—		110		—
Company contributions		22,963		206		—		—
Benefits and settlements paid		(6,411)		(206)		(1,329)		—
Balance at end of year	$	75,331	$	—	$	11,946	$	—
Under funded status of plan	$	(788)	$	(5,108)	$	(2,454)	$	—

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):


	2016						2015

	GTT Pension Benefit		Innovative Pension Benefit		Postretirement Benefits		GTT Pension Benefit		Innovative Pension Benefit		Postretirement Benefits

Projected benefit obligation	$	12,549	$	63,571	$	5,108	$	14,400	$	—	$	—
Plan Net Assets		8,655		66,676		—		11,946		—		—
Over/ (Under) funded status of plan	$	(3,894)	$	3,105	$	(5,108)	$	(2,454)	$	—	$	—

At December 31, 2016, the Company held $5.1 million of restricted cash equal to the underfunded status of the other postretirement benefit plans. The cash is restricted due to the Company’s intent and specific nature of the commitment.

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, 2016 are as follows (in thousands):


Asset Category	Total		Level 1		Level 2		Level 3
Cash, cash equivalents, money markets and other	$	32,976	$	32,976	$	—	$	—
Common stock - domestic		17,715		17,715		—		—
Common stock - foreign		4,845		3,629		1,216		—
Mutual funds - equities		7,141		6,180		961		—
Exchange traded funds - equities		1,553		1,553		—		—
Fixed income mutual funds		10,142		—		10,142		—
Fixed income securities		456		—		456		—
Annuities		503		—		—		503
Total	$	75,331	$	62,053	$	12,775	$	503

The plan’s weighted‑average asset allocations at December 31, 2016 and 2015, by asset category are as follows:


	2016		2015
Cash, cash equivalents, money markets and other	43.8	%	81.5	%
Common stock - domestic	23.5		14.7
Common stock - foreign	6.4		—
Mutual funds - equities	9.5		—
Exchange traded funds - equities	2.1		—
Fixed income mutual funds	13.5		—
Fixed income securities	0.6		3.8
Annuities	0.7		—
Total	100	%	100	%

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


	As of December 31,
	2016				2015
	Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits

Accrued and current liabilities	$	—	$	381	$	—	$	—
Other Liabilities		3,894		4,727		2,454		—
Other Assets		3,105		—		—		—
Accumulated other comprehensive income / (loss), net of tax		1,418		352		(3,481)		—

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


	As of December 31,
	2016				2015
	Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits

Net actuarial gain / (loss)	$	(386)	$	352	$	(5,836)	$	—
Accumulated other comprehensive income / ( loss), pre-tax		(386)		352		(5,836)		—
Accumulated other comprehensive income / ( loss), net of tax		1,418		352		(3,481)		—

Components of the plan’s net periodic pension cost are as follows for the years ended December 31, 2016, 2015 and 2014 (in thousands):


	2016				2015				2014
	Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits

Service cost	$	1,308	$	97	$	652	$	—	$	612	$	—
Interest cost		2,002		97		766		—		720		—
Expected return on plan assets		(2,024)		—		(813)		—		(848)		—
Amortization of unrecognized net actuarial loss		1,271		—		245		—		218		—
Curtailment		128		—		—		—		—		—
Net periodic pension cost	$	2,685	$	194	$	850	$	—	$	702	$	—

For the year ended December 31, 2017, the Company expects to contribute approximately $833 its pension plans.

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


	Pension
Fiscal Year	Benefits
2017	$	4,433
2018		4,001
2019		4,348
2020		4,461
2021		4,676
2022 - 2026		22,651
	$	44,570

COMMITMENTS AND CONTINGENCIES

12 Months Ended

Dec. 31, 2016

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

13. 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.

As of December 31, 2016 the Company had approximately $10.6 million in letters of credit payable to USAC outstanding to cover its Mobility Fund obligations and there were no drawdowns against these letters of credit. The letters of credit accrue a fee at a rate of 1.75% per annum on the outstanding amounts. If the Company fails to comply with certain terms and conditions upon which the Mobility Funds are to be granted, or if it loses eligibility for Mobility Fund support, USAC will be entitled to draw the entire amount of the letter of credit applicable to the affected project including penalties. The Company is in compliance with all applicable terms and conditions. The results of the Company’s Mobility Fund projects are included in the Company’s “U.S. Telecom” segment.

Currently, 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. In contrast to prior legislative proposals, the legislation that passed does not include a provision that permits other telecommunications carriers to receive licenses automatically upon signing of the legislation, nor does it 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. The Company cannot predict the manner in which it will be implemented by the Minister of Telecommunications.

In December 2016 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 they will satisfactorily address 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 not likely, 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 their continued opinion that the final calculation for GSM 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 Digicel’s which outlined a recommended methodology for the calculation of these fees. The NFMU stated that it would prepare its own recommendation which it would send to the Minister of Telecommunications for decision of 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 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. On November 7, 2009 and again on April 4, 2013, CTL filed a similar claim against GTT and the Public Utility Commission in the High Court of Guyana. The matter remained idle from the April 2013 filing until December 2015 when CTL filed a “Statement of Claim” reiterating the claims previously made in its prior filings. On April 7, 2016 the High Court of Guyana struck and dismissed CTL’s action as abandoned pursuant to the Court’s rules of civil procedure and the claim is no longer pending.

On May 8, 2009, 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 in the High Court. On May 13, 2009, GTT petitioned to intervene in the suit in order to oppose Digicel’s claims and that petition was granted on May 18, 2009. GTT filed an answer to the charge on June 22, 2009 and the case is 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 vigorously defend against such a 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, among other things, injunctive relief to stop the illegal bypass activity, actual damages in excess of US$9 million and punitive damages of approximately US$5 million. 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 yet to proceed to trial and it remains uncertain as to when a trial date may be set. GTT intends to vigorously prosecute these matters.

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. Should GTT be held liable for any of the disputed tax assessments, totaling $44.1 million, the Company believes that the Government of Guyana would then be obligated to reimburse GTT for any 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, 2016 for these matters.

Lease Commitments and Other Obligations

The Company leases approximately 2.7 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, 2016 (in thousands):


2017		20,908
2018		26,120
2019		16,100
2020		17,090
2021		7,170
Thereafter		15,009
Total obligations under operating leases	$	102,397

Rent expense for the years ended December 31, 2016, 2015 and 2014 was $19.8 million, $17.0 million and $15.0 million, respectively.

RELATED PARTY TRANSACTIONS	12 Months Ended
RELATED PARTY TRANSACTIONS	Dec. 31, 2016
RELATED PARTY TRANSACTIONS
RELATED PARTY TRANSACTIONS	14. 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 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. Our 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 our Related Person Transaction Policy.

SEGMENT REPORTING

12 Months Ended

Dec. 31, 2016

SEGMENT REPORTING

SEGMENT REPORTING

15. SEGMENT REPORTING

For the year ended December 31, 2015, the Company had five reportable segments for separate disclosure in accordance with the FASB’s authoritative guidance on disclosures about segments of an enterprise. Those five segments were: i) U.S. Wireless, which generated all of its revenues in and had all of its assets located in the United States, ii) International Integrated Telephony, which generated all of its revenues in and had all of its assets located in Guyana, iii) Island Wireless, which generated a majority of its revenues in, and had a majority of its assets located in, Bermuda and which also generated revenues in and had assets located in the U.S. Virgin Islands, Aruba and Turks and Caicos (through March 23, 2015), iv) U.S. Wireline, which generated all of its revenues in and had all of its assets located in the United States, and v) Renewable Energy, which generated all of its revenues in and had all of its assets located in the United States. The operating segments were managed separately because each offers different services and serves different markets.

To be consistent with how management allocates resources and assesses the performance of its business operations in 2016, the Company updated its reportable and operating segments in the first quarter of the year to consist of the following: i) U.S. Telecom, consisting of the Company’s former U.S. Wireless and U.S. Wireline segments, ii) International Telecom, consisting of the Company’s former Island Wireless and International Integrated Telephony segments and the results of its One Communications and Innovative Acquisitions as discussed below, and iii) Renewable Energy, consisting of the Company’s former Renewable Energy segment and the results of its Vibrant Energy Acquisition. The prior year segment information has been recast to conform to the current year’s segment presentation.

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


For the Year Ended December 31, 2016

	U.S.		International		Renewable		Reconciling
	Telecom		Telecom		Energy		Items (1)		Consolidated
Revenue
Wireless	$	148,053	$	80,745	$	—	$	—	$	228,798
Wireline		26,448		161,571		—		—		188,019
Equipment and Other		2,225		15,960		393		—		18,578
Renewable Energy		—		—		21,608		—		21,608
Total Revenue		176,726		258,276		22,001		—		457,003
Depreciation and amortization		24,471		40,492		4,987		6,030		75,980
Non-cash stock-based compensation		—		22		114		6,274		6,410
Operating income (loss)		49,078		35,436		(246)		(34,471)		49,797


For the Year Ended December 31, 2015

	U.S.		International		Renewable		Reconciling
	Telecom		Telecom		Energy		Items (1)		Consolidated
Revenue
Wireless	$	155,390	$	81,652	$	—	$	—	$	237,042
Wireline		25,241		61,244		—		—		86,485
Equipment and Other		2,355		8,447		—		—		10,802
Renewable Energy		—		—		21,040		—		21,040
Total Revenue		182,986		151,342		21,040		—		355,369
Depreciation and amortization		22,239		24,883		4,820		4,948		56,890
Non-cash stock-based compensation		—		—		267		4,708		4,975
Operating income (loss)		74,459		28,200		6,720		(30,784)		78,595


For the Year Ended December 31, 2014

	U.S.		International		Renewable		Reconciling
	Telecom		Telecom		Energy		Items (1)		Consolidated
Revenue
Wireless	$	153,040	$	88,650	$	—	$	—	$	241,690
Wireline		26,155		59,129		—		—		85,284
Equipment and Other		1,196		7,728		449		—		9,373
Total Revenue		180,391		155,506		449		—		336,347
Depreciation and amortization		19,070		28,079		105		3,980		51,234
Non-cash stock-based compensation		—		—		—		4,323		4,323
Operating income (loss)		85,519		28,674		(2,218)		(26,399)		85,576



	U.S.		International		Renewable		Reconciling
	Telecom		Telecom		Energy		Items (1)		Consolidated
December 31, 2016
Net fixed assets	$	129,274	$	372,741	$	130,268	$	15,429	$	647,712
Goodwill		35,269		24,326		3,279		—		62,873
Total assets		240,006		597,454		190,253		170,505		1,198,218
December 31, 2015
Net fixed assets	$	119,596	$	133,262	$	106,560	$	14,085	$	373,503
Goodwill		39,639		5,438		—		—		45,077
Total assets		227,707		278,770		122,788		315,739		945,004


		Capital Expenditures

		U.S.		International		Renewable		Reconciling
Year ended December 31,		Telecom		Telecom		Energy		Items (1)		Consolidated
2016	$	31,983	$	62,808	$	22,615	$	6,876	$	124,282
2015		37,588		22,804		38		4,323		64,753

(1)

Reconciling items refer to corporate overhead expenses and consolidating adjustments.

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):


	2016				2015				2014
			Long-Lived				Long-Lived				Long-Lived
	Revenues		Assets		Revenues		Assets		Revenues		Assets

U.S.	$	198,300	$	265,528	$	204,024	$	247,169	$	180,841	$	240,341
Guyana		91,653		132,609		88,894		109,829		86,931		108,738
U.S Virgin Islands		58,431		110,773		11,542		9,621		11,583		10,027
Bermuda		83,006		94,976		45,745		13,483		46,917		12,507
Other Foreign Countries		25,613		76,575		5,164		927		10,075		5,419
	$	457,003	$	680,461	$	355,369	$	381,029	$	336,347	$	377,032

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8971-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8595-108599

Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8380-108599

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8844-108599

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8984-108599

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9054-108599

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8538-108599

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8864-108599

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599

+ Details

QUARTERLY FINANCIAL DATA (UNAUDITED)

12 Months Ended

Dec. 31, 2016

QUARTERLY FINANCIAL DATA (UNAUDITED)

QUARTERLY FINANCIAL DATA (UNAUDITED)

16. QUARTERLY FINANCIAL DATA (UNAUDITED)

Following is a summary of the Company’s quarterly results of operations for the years ended December 31, 2016 and 2015 (in thousands):


	2016 Consolidated for the Three Months Ended
	March 31		June 30		September 30		December 31
Total revenue	$	89,686	$	99,991	$	138,795	$	128,531
Operating expenses		73,793		98,079		116,714		118,620
Income from operations		15,893		1,912		22,081		9,911
Other income (expense), net		(464)		(853)		(785)		(2,321)
Income (Loss)from continuing operations before income taxes		15,429		1,059		21,296		7,590
Income taxes		4,631		2,945		9,602		3,982
Income (Loss) from continuing operations		10,798		(1,886)		11,694		3,608
Income from discontinued operations:
Income from discontinued operations, net of tax		—		—		—		—
Net income		10,798		(1,886)		11,694		3,608
Net income attributable to non-controlling interests, net of tax:
Continuing operations		(4,678)		(1,200)		(4,523)		(1,712)
Net income attributable to ATN International, Inc. stockholders		6,120		(3,086)		7,171		1,896
Net income per weighted average basic share attributable to ATN International, Inc. stockholders
Continuing operations		0.38		(0.19)		0.44		0.12
Total		0.38		(0.19)		0.44		0.12
Net income per weighted average diluted share attributable to ATN International, Inc. stockholders
Continuing operations		0.38		(0.19)		0.44		0.12
Total		0.38		(0.19)		0.44		0.12


	2015 Consolidated for the Three Months Ended
	March 31		June 30		September 30		December 31
Total revenue	$	85,345	$	90,326	$	96,782	$	82,916
Operating expenses		66,187		61,594		74,258		74,735
Income from operations		19,158		28,732		22,524		8,181
Other income (expense), net		(20,528)		(706)		(742)		(418)
Income from continuing operations before income taxes		(1,370)		28,026		21,782		7,763
Income taxes		(487)		13,008		10,134		1,482
Income from continuing operations		(883)		15,018		11,648		6,281
Income from discontinued operations:
Gain on sale of discontinued operations, net of tax		389		—		—		702
Income from discontinued operations, net of tax		390		—		—		702
Net income		(493)		15,018		11,648		6,983
Net income attributable to non-controlling interests, net of tax:
Continuing operations		(2,777)		(5,568)		(5,072)		(2,799)
Discontinued operations		—		—		—		—
Disposal of discontinued operations		—		—		—		—
Net income attributable to ATN International, Inc. stockholders		(3,270)		9,450		6,576		4,184
Net income per weighted average basic share attributable to ATN International, Inc. stockholders
Continuing operations		(0.18)		0.59		0.41		0.17
Discontinued operations:
Discontinued operations		0.07		—		—		—
Gain on sale of discontinued operations		—		—		—		—
Total discontinued operations		0.07		—		—		—
Total		(0.11)		0.59		0.41		0.17
Net income per weighted average diluted share attributable to ATN International, Inc. stockholders
Continuing operations		(0.18)		0.59		0.41		0.16
Discontinued operations:
Discontinued operations		0.07		—		—		—
Gain on Sale of discontinued operations		—		—		—		—
Total discontinued operations		0.07		—		—		—
Total		(0.11)		0.59		0.41		0.16

During the three months ended December 31, 2015, the Company recognized an approximate $0.7 million benefit to correct for tax basis differences and expense recognition related to prior periods. Of these errors, $0.7 million primarily related to the three months ended September 30, 2015.

During the three months ended December 31, 2016, the Company recognized an approximate $0.8 million charge to correct for a $0.3 million understatement of expense related primarily to the nine months ended September 30, 2016 in our International Telecom segment and a $0.5 million reduction to revenue primarily related to the nine months ended September 30, 2016 in our Renewable Energy segment.

The Company determined that the impact of the correction of these errors was not material to the current or any prior period financial statements.

SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2016

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, 2014
Description:
Valuation allowance on foreign tax credit carryforwards	$	13,576	$	—	$	—	$	2,999	$	10,577
Valuation allowance on foreign net operating losses		1,610		—		—		110		1,500
Valuation allowance on state net operating losses		1,126		—		561		—		1,687
Allowance for doubtful accounts		9,005		—		2,417		80		11,342
	$	25,317	$	—	$	2,978	$	3,189	$	25,106
YEAR ENDED, December 31, 2015
Description:
Valuation allowance on foreign tax credit carryforwards	$	10,577	$	—	$	—	$	6,397	$	4,180
Valuation allowance on foreign net operating losses		1,500		—		172		—		1,672
Valuation allowance on state net operating losses		1,687		—		275		—		1,962
Allowance for doubtful accounts		11,342		—		858		2,906		9,294
	$	25,106	$	—	$	1,305	$	9,303	$	17,108

YEAR ENDED, December 31, 2016
Description:
Valuation allowance on foreign tax credit carryforwards	$	4,180	$	—	$		$	4,180	$	—
Valuation allowance on foreign net operating losses		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

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

12 Months Ended

Dec. 31, 2016

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

Use of Estimates

Cash and Cash Equivalents

Short Term Investments

Restricted Cash

Allowance for Doubtful Accounts

Materials and Supplies

Fixed Assets

See Note 3, Pending Disposition- U.S. Telecom, regarding the Company’s impairment of certain 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		Short Term
	Obligation		Adjustment		Investment		Total

Balance at December 31, 2013	$	(1,949)		(253)		—		(2,202)
Adjust funded status of pension plan, net of tax of $0.6 million		(723)		—		—		(723)
Foreign currency translation adjustment		—		4		—		4
Balance at December 31, 2014		(2,672)		(249)		—		(2,921)
Adjust funded status of pension plan, net of tax of $0.7 million		(809)		—		—		(809)
Foreign currency translation adjustment		—		26		—		26
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

Revenue Recognition

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

Termination and access fee expenses

Engineering and operations expenses

Sales and marketing expenses

Equipment expenses

Equipment expenses. Equipment expenses include the costs of handset and customer resale equipment in the Company’s retail businesses.

General and administrative expenses

Transactions-related charges

Restructuring charges

Restructuring charges. Restructuring charges include costs incurred in integrating our newly acquired Companies.

Depreciation and amortization expenses

Depreciation and amortization expenses. Depreciation and amortization expenses represent the depreciation and amortization charges recorded on our property and equipment and intangible assets.

Impairment of goodwill and long-lived assets

Accounting for Grants

Income Taxes

The Company does not provide for United States income taxes on earnings of foreign subsidiaries as such earnings are considered to be indefinitely reinvested.

Credit Concentrations and Significant Customers


Customer	2016		2015		2014
Verizon	12	%	19	%	16	%
AT&T	14	%	17	%	26	%

No other customer accounted for more than 10% of consolidated revenue in any of the past three years.


Customer	2016		2015
AT&T	17	%	17	%
Verizon	12	%	13	%

Foreign Currency Gains and Losses

Employee benefit plans

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, 2016 and 2015 are summarized as follows:


	December 31, 2016
			Significant Other
	Quoted Prices in		Observable
	Active Markets		Inputs
Description	(Level 1)		(Level 2)		Total
Certificates of deposit	$	—	$	391	$	391
Money market funds	$	29,027	$	—	$	29,027
Short term investments	$	1,751	$	7,486	$	9,237
Commercial Paper	$	—	$	29,981	$	29,981
Total assets measured at fair value	$	30,778	$	37,858	$	68,636


	December 31, 2015
			Significant Other
	Quoted Prices in		Observable
	Active Markets		Inputs
Description	(Level 1)		(Level 2)		Total
Certificates of deposit	$	—	$	377	$	377
Money market funds	$	76,263	$	—	$	76,263
Total assets measured at fair value	$	76,263	$	377	$	76,640

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,
	2016	2015	2014
Basic weighted-average shares of common stock outstanding	16,131	16,022	15,898
Stock options	96	120	115
Diluted weighted-average shares of common stock outstanding	16,227	16,142	16,013

The following notes the number of potential share 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,
	2016	2015	2014
Stock options	5	2	—
Total	5	2	—

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

ORGANIZATION AND BUSINESS OPERATIONS (Tables)

12 Months Ended

Dec. 31, 2016

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

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, 2016:


Segment	Services	Markets	Tradenames
U.S. Telecom	Wireless	United States (rural markets)	Commnet, Choice, Choice NTUA Wireless
	Wireline	United States (New England and New York State)	Sovernet, ION, Essextel
International Telecom	Wireline	Guyana, Bermuda, U.S. Virgin Islands	GTT+, One, Innovative, Logic
	Wireless	Bermuda, Guyana, U.S. Virgin Islands	One, GTT+, Innovative, Choice
	Video Services	Bermuda, U.S. Virgin Islands, Cayman Islands, British Virgin Islands, St. Maarten	One, Innovative, Logic, BVI Cable TV
Renewable Energy	Solar	United States and India	Ahana Renewables, Vibrant Energy

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2016

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

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		Short Term
	Obligation		Adjustment		Investment		Total

Balance at December 31, 2013	$	(1,949)		(253)		—		(2,202)
Adjust funded status of pension plan, net of tax of $0.6 million		(723)		—		—		(723)
Foreign currency translation adjustment		—		4		—		4
Balance at December 31, 2014		(2,672)		(249)		—		(2,921)
Adjust funded status of pension plan, net of tax of $0.7 million		(809)		—		—		(809)
Foreign currency translation adjustment		—		26		—		26
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

Schedule of percentage of revenues generated from a single customer that exceeds 10% of the Company's consolidated revenue


Customer	2016		2015		2014
Verizon	12	%	19	%	16	%
AT&T	14	%	17	%	26	%

Schedule of percentage of accounts receivable, from customers that exceed 10% of the Company's consolidated accounts receivable, net of allowances


Customer	2016		2015
AT&T	17	%	17	%
Verizon	12	%	13	%

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


	December 31, 2016
			Significant Other
	Quoted Prices in		Observable
	Active Markets		Inputs
Description	(Level 1)		(Level 2)		Total
Certificates of deposit	$	—	$	391	$	391
Money market funds	$	29,027	$	—	$	29,027
Short term investments	$	1,751	$	7,486	$	9,237
Commercial Paper	$	—	$	29,981	$	29,981
Total assets measured at fair value	$	30,778	$	37,858	$	68,636


	December 31, 2015
			Significant Other
	Quoted Prices in		Observable
	Active Markets		Inputs
Description	(Level 1)		(Level 2)		Total
Certificates of deposit	$	—	$	377	$	377
Money market funds	$	76,263	$	—	$	76,263
Total assets measured at fair value	$	76,263	$	377	$	76,640

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,
	2016	2015	2014
Basic weighted-average shares of common stock outstanding	16,131	16,022	15,898
Stock options	96	120	115
Diluted weighted-average shares of common stock outstanding	16,227	16,142	16,013

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 share 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,
	2016	2015	2014
Stock options	5	2	—
Total	5	2	—

ACQUISITIONS AND DISPOSITIONS (Tables)

12 Months Ended

Dec. 31, 2016

Acquisitions

Schedule of pro forma results of operations

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)

One Communications (formerly KeyTech) and BDC

Acquisitions

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


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

Purchase price allocation KeyTech:
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 KeyTech 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

Innovative

Acquisitions

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

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

ACCOUNTS RECEIVABLE (Tables)

12 Months Ended

Dec. 31, 2016

ACCOUNTS RECEIVABLE:

Schedule of accounts receivable

As of December 31, 2016 and 2015, accounts receivable consist of the following (in thousands):


	2016		2015
Retail	$	36,026	$	23,805
Wholesale		22,502		24,341
Other		40		168
Accounts receivable		58,568		48,314
Less: allowance for doubtful accounts		(13,149)		(9,294)
Total accounts receivable, net	$	45,419	$	39,020

FIXED ASSETS (Tables)

12 Months Ended

Dec. 31, 2016

FIXED ASSETS:

Schedule of property, plant and equipment

As of December 31, 2016 and 2015, property, plant and equipment consisted of the following (in thousands):


	Useful Life
	(in Years)	2016		2015
Telecommunications equipment and towers	5 -15	$	802,415	$	553,237
Solar assets	20-23		115,932		111,446
Office and computer equipment	3 -10		44,147		54,665
Buildings	15-39		43,609		18,540
Transportation vehicles	3 -10		12,043		8,882
Leasehold improvements	Shorter of useful life or lease term		325		11,592


Land	—		10,242		1,198
Furniture and fixtures	5 -10		7,657		6,584
Total property, plant and equipment			1,036,370		766,144
Construction in progress			101,992		41,103
Total property, plant and equipment			1,138,362		807,247
Less: Accumulated depreciation			(490,650)		(433,744)
Net fixed assets		$	647,712		373,503

GOODWILL AND INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2016

GOODWILL AND INTANGIBLE ASSETS

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

There were no changes to the Company’s goodwill balances from January 1, 2014 through December 31, 2015 (in thousands):


	U.S.		International			Renewable
	Telecom		Telecom		Energy		Consolidated
Balance at December 31, 2015	$	39,639	$	5,438	$	—	$	45,077
Acquisitions		3,121		20,586		3,279		26,986
Deconsolidation of Subsidiary		—		(1,698)		—		(1,698)
Impairment		(7,491)		—		—		(7,491)
Balance at December 31, 2016
Gross		42,759		24,326		3,279		70,364
Accumulated Impairment		(7,491)		—		—		(7,491)
Net	$	35,268	$	24,326	$	3,279	$	62,873

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, 2016 were as follows (in thousands):


	U.S.		Int'l
	Telecom		Telecom		Consolidated
Balance at December 31, 2014	$	24,944	$	19,146	$	44,090
Amortization		—		(622)		(622)
Balance at December 31, 2015	$	24,944	$	18,524	$	43,468
Deconsolidation of subsidiary		—		(2,178)		(2,178)
Acquired licenses		—		7,623		7,623
Amortization		—		(622)		(622)
Balance at December 31, 2016	$	24,944	$	23,347	$	48,291

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

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


	Future Amortization
2017	$	3,281
2018		2,411
2019		1,897
2020		1,528
2021		1,300
Thereafter		4,612
Total	$	15,029

EQUITY (Tables)

12 Months Ended

Dec. 31, 2016

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
2016	38,279	$	2,775	$	72.50
2015	37,567		2,705		72.01
2014	34,293		2,160		63.01

Summary of stock option activity


	Year Ended December 31, 2016
				Weighted Average
		Weighted Avg.		Remaining
	Number of	Exercise		Contractual	Aggregate
	Options	Price		Term (Years)	Intrinsic Value
Outstanding at January 1, 2016	268,875	$	38.64
Granted	—		—
Exercised	(43,053)		32.70
Outstanding at December 31, 2016	225,822		39.77	3.9	$	9,114,963
Vested and expected to vest at December 31, 2016	225,554		39.73	3.9	$	9,112,630
Exercisable at December 31, 2016	222,072		39.23	3.8	$	9,082,338


	Year Ended December 31, 2015
				Weighted Average
				Remaining
	Number of	Weighted Avg.		Contractual	Aggregate
	Options	Exercise Price		Term (Years)	Intrinsic Value
Outstanding at January 1, 2015	351,253	$	36.55
Granted	5,000		71.43
Exercised	(87,378)		32.14
Outstanding at December 31, 2015	268,875		38.64	4.7	$	10,646,006
Vested and expected to vest at December 31, 2015	268,011		38.53	4.7	$	10,640,134
Exercisable at December 31, 2015	248,875		38.05	4.5	$	9,998,956

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, 2016, 2015 and 2014 (in thousands, except fair value of options granted data):


	2016		2015		2014
Weighted-average fair value of options granted	$	—	$	30.70	$	N/A
Aggregate intrinsic value of options exercised		1,591		3,488		1,098
Cash proceeds received upon exercise of options		1,060		1,999		1,621
Excess tax benefits from share-based compensation		591		1,423		513

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




Risk-free interest rate	1.55	%
Expected dividend yield	1.76	%
Expected life	6.25	years
Expected volatility	51.85	%

Summary of restricted stock activity

The following table summarizes restricted stock activity during the year ended December 31, 2016:


		Weighted Avg.
	Shares	Fair Value
Unvested as of January 1, 2016	218,401	$	60.60
Granted	100,005		73.34
Forfeited	(1,125)		66.44
Vested and issued	(88,241)		58.01
Unvested as of December 31, 2016	229,040	$	67.13

The following table summarizes restricted stock activity during the year ended December 31, 2015:


		Weighted Avg.
	Shares	Fair Value
Unvested as of January 1, 2015	195,143	$	55.13
Granted	93,864		66.26
Forfeited	(1,687)		65.18
Vested and issued	(68,919)		52.70
Unvested as of December 31, 2015	218,401	$	60.60

2004 and 2016 Repurchase Plan

Schedule of shares repurchased


		Aggregate
	Shares	Cost		Average
Year ended December 31,	Repurchased	(in thousands)		Repurchase Price
2016	32,407	$	2,195	$	64.72
2015	—		—		—
2014	—		—		—

INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2016

INCOME TAXES

Schedule of components of income before income taxes

The components of income before income taxes for the years ended December 31, 2016, 2015 and 2014 are as follows (in thousands):


	2016		2015		2014
Domestic	$	28,047	$	50,563	$	57,767
Foreign		17,327		5,638		28,401
Total	$	45,374	$	56,201	$	86,168

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


	2016		2015		2014
Domestic	$	28,047	$	50,563	$	57,767
Foreign		17,327		5,638		28,401
Total	$	45,374	$	56,201	$	86,168

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, 2016, 2015, and 2014 (in thousands):


	2016		2015		2014
Tax computed at statutory U.S. federal income tax rates	$	15,782	$	19,652	$	30,160
Non controlling interest		(2,893)		(2,807)		(1,229)
Foreign tax rate differential		(3,074)		1,659		(5,757)
Over (under) provided in prior periods		1,069		652		(401)
Nondeductible expenses		1,134		1,113		757
Goodwill Impairment		2,622		—		—
Capitalized transactions costs		3,138		—		—
Change in tax reserves		2,561		2,564		2,153
State Taxes, net of federal benefit		1,853		935		1,252
Change in valuation allowance		(7,292)		(5,949)		(2,549)
Foreign tax credit expiration		4,179		6,396		2,999
Other, net		2,081		(78)		763
Total Income Tax Expense	$	21,160	$	24,137	$	28,148

Schedule of components of income tax expense (benefit)

The components of income tax expense (benefit) for the years ended December 31, 2016, 2015 and 2014 are as follows (in thousands):

\
	2016		2015		2014
Current:
United States—Federal	$	15,763	$	(1,308)	$	14,761
United States—State		505		(383)		1,347
Foreign		10,528		7,959		12,153
Total current income tax expense	$	26,796	$	6,268	$	28,261
Deferred:
United States—Federal	$	(1,880)	$	16,760	$	5,205
United States—State		(291)		1,636		466
Foreign		(3,465)		(527)		(5,784)
Total deferred income tax expense (benefit)		(5,636)		17,869		(113)
Consolidated:
United States—Federal	$	13,883	$	15,452	$	19,966
United States—State		214		1,253		1,813
Foreign		7,063		7,432		6,369
Total income tax expense	$	21,160	$	24,137	$	28,148

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, 2016 and 2015 (in thousands):


	2016		2015
Deferred tax assets:
Receivables reserve	$	1,470	$	702
Temporary differences not currently deductible for tax		8,918		7,236
Deferred compensation		2,461		2,135
Foreign tax credit carryforwards		—		4,180
Pension		1,085		1,153
Net operating losses		29,571		4,463
Total deferred tax asset		43,505		19,869
Deferred tax liabilities:
Property, plant and equipment, net	$	41,136	$	43,718
Intangible assets, net		6,122		13,743
Total deferred tax liabilities		47,258		57,461

Valuation allowance		(42,462)		(7,814)

Net deferred tax liabilities	$	(46,215)	$	(45,406)

Schedule of deferred tax assets and liabilities

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


	2016		2015
Deferred tax assets:
Current	$	—	$	—
Long term		407		—
Total deferred tax asset	$	407	$	—
Deferred tax liabilities:
Current	$	—	$	—
Long term		(46,622)		(45,406)
Total deferred tax liabilities	$	(46,622)	$	(45,406)
Net deferred tax liabilities	$	(46,215)	$	(45,406)

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, 2016 (in thousands):


Gross unrecognized tax benefits at December 31, 2013		14,050
Increase in unrecognized tax benefits taken during a prior period		177
Increase in unrecognized tax benefits taken during the current period		1,498
Lapse in statute of limitations		(226)
Settlements		—
Gross unrecognized tax benefits at December 31, 2014		15,499
Increase in unrecognized tax benefits taken during a prior period		—
Increase in unrecognized tax benefits taken during the current period		1,717
Lapse in statute of limitations		—
Settlements		—
Gross unrecognized uncertain 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

RETIREMENT PLANS (Tables)

12 Months Ended

Dec. 31, 2016

RETIREMENT PLANS

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


	2016		2015		2014
Discount Rate – Pension Benefit	4.3	%	5.8	%	5.8	%
Discount Rate – Postretirement Benefit	3.9	%	N/A		N/A
Annual salary increase	6.5	%	6.5	%	6.5	%
Expected long-term return on plan assets	6.3	%	6.5	%	7.0	%

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


	Accumulated postretirement benefit obligation			Service cost plus interest cost

At trend		5,108		194
At trend + 1%		5,487		214
Dollar Impact		379		20
Percentage Impact		7.4	%	10.3	%
At trend – 1%		4,775		177
Dollar Impact		(333)		(17)
Percentage Impact		(6.5)	%	(8.8)	%

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 2016 and 2015 (in thousands):


	2016				2015

	Pension Benefits		Postretirement Benefits		Pension Benefits		Postretirement Benefits
Projected benefit obligations:
Balance at beginning of year:	$	14,400	$	—	$	14,093	$	—
Innovative Acquisition		69,178		5,472		—		—
Service cost		1,308		97		652		—
Interest cost		2,002		97		766		—
Curtailment		128		—		—		—
Benefits and settlements paid		(6,445)		(206)		(1,329)		—
Actuarial (gain) loss		(4,437)		(325)		218		—
Experience loss		(15)		(27)		—		—
Balance at end of year	$	76,119	$	5,108	$	14,400	$	—
Plan net assets:
Balance at beginning of year:	$	11,946	$	—	$	13,165	$	—
Innovative Acquisition		45,116		—		—		—
Actual return on plan assets		1,717		—		110		—
Company contributions		22,963		206		—		—
Benefits and settlements paid		(6,411)		(206)		(1,329)		—
Balance at end of year	$	75,331	$	—	$	11,946	$	—
Under funded status of plan	$	(788)	$	(5,108)	$	(2,454)	$	—

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):


	2016						2015

	GTT Pension Benefit		Innovative Pension Benefit		Postretirement Benefits		GTT Pension Benefit		Innovative Pension Benefit		Postretirement Benefits

Projected benefit obligation	$	12,549	$	63,571	$	5,108	$	14,400	$	—	$	—
Plan Net Assets		8,655		66,676		—		11,946		—		—
Over/ (Under) funded status of plan	$	(3,894)	$	3,105	$	(5,108)	$	(2,454)	$	—	$	—

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, 2016 are as follows (in thousands):


Asset Category	Total		Level 1		Level 2		Level 3
Cash, cash equivalents, money markets and other	$	32,976	$	32,976	$	—	$	—
Common stock - domestic		17,715		17,715		—		—
Common stock - foreign		4,845		3,629		1,216		—
Mutual funds - equities		7,141		6,180		961		—
Exchange traded funds - equities		1,553		1,553		—		—
Fixed income mutual funds		10,142		—		10,142		—
Fixed income securities		456		—		456		—
Annuities		503		—		—		503
Total	$	75,331	$	62,053	$	12,775	$	503

Schedule of weighted-average asset allocations, by asset category


	2016		2015
Cash, cash equivalents, money markets and other	43.8	%	81.5	%
Common stock - domestic	23.5		14.7
Common stock - foreign	6.4		—
Mutual funds - equities	9.5		—
Exchange traded funds - equities	2.1		—
Fixed income mutual funds	13.5		—
Fixed income securities	0.6		3.8
Annuities	0.7		—
Total	100	%	100	%

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


	2016		2015
Cash, cash equivalents, money markets and other	43.8	%	81.5	%
Common stock - domestic	23.5		14.7
Common stock - foreign	6.4		—
Mutual funds - equities	9.5		—
Exchange traded funds - equities	2.1		—
Fixed income mutual funds	13.5		—
Fixed income securities	0.6		3.8
Annuities	0.7		—
Total	100	%	100	%

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


	As of December 31,
	2016				2015
	Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits

Accrued and current liabilities	$	—	$	381	$	—	$	—
Other Liabilities		3,894		4,727		2,454		—
Other Assets		3,105		—		—		—
Accumulated other comprehensive income / (loss), net of tax		1,418		352		(3,481)		—

Schedule of amounts recognized in accumulated other comprehensive loss

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


	As of December 31,
	2016				2015
	Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits

Net actuarial gain / (loss)	$	(386)	$	352	$	(5,836)	$	—
Accumulated other comprehensive income / ( loss), pre-tax		(386)		352		(5,836)		—
Accumulated other comprehensive income / ( loss), net of tax		1,418		352		(3,481)		—

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


	As of December 31,
	2016				2015
	Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits

Net actuarial gain / (loss)	$	(386)	$	352	$	(5,836)	$	—
Accumulated other comprehensive income / ( loss), pre-tax		(386)		352		(5,836)		—
Accumulated other comprehensive income / ( loss), net of tax		1,418		352		(3,481)		—

Components of the plan’s net periodic pension cost are as follows for the years ended December 31, 2016, 2015 and 2014 (in thousands):


	2016				2015				2014
	Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits		Pension benefits		Postretirement benefits

Service cost	$	1,308	$	97	$	652	$	—	$	612	$	—
Interest cost		2,002		97		766		—		720		—
Expected return on plan assets		(2,024)		—		(813)		—		(848)		—
Amortization of unrecognized net actuarial loss		1,271		—		245		—		218		—
Curtailment		128		—		—		—		—		—
Net periodic pension cost	$	2,685	$	194	$	850	$	—	$	702	$	—

Schedule of estimated pension benefits

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


	Pension
Fiscal Year	Benefits
2017	$	4,433
2018		4,001
2019		4,348
2020		4,461
2021		4,676
2022 - 2026		22,651
	$	44,570

COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2016

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, 2016 (in thousands):


2017		20,908
2018		26,120
2019		16,100
2020		17,090
2021		7,170
Thereafter		15,009
Total obligations under operating leases	$	102,397

SEGMENT REPORTING (Tables)

12 Months Ended

Dec. 31, 2016

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, 2016

	U.S.		International		Renewable		Reconciling
	Telecom		Telecom		Energy		Items (1)		Consolidated
Revenue
Wireless	$	148,053	$	80,745	$	—	$	—	$	228,798
Wireline		26,448		161,571		—		—		188,019
Equipment and Other		2,225		15,960		393		—		18,578
Renewable Energy		—		—		21,608		—		21,608
Total Revenue		176,726		258,276		22,001		—		457,003
Depreciation and amortization		24,471		40,492		4,987		6,030		75,980
Non-cash stock-based compensation		—		22		114		6,274		6,410
Operating income (loss)		49,078		35,436		(246)		(34,471)		49,797


For the Year Ended December 31, 2015

	U.S.		International		Renewable		Reconciling
	Telecom		Telecom		Energy		Items (1)		Consolidated
Revenue
Wireless	$	155,390	$	81,652	$	—	$	—	$	237,042
Wireline		25,241		61,244		—		—		86,485
Equipment and Other		2,355		8,447		—		—		10,802
Renewable Energy		—		—		21,040		—		21,040
Total Revenue		182,986		151,342		21,040		—		355,369
Depreciation and amortization		22,239		24,883		4,820		4,948		56,890
Non-cash stock-based compensation		—		—		267		4,708		4,975
Operating income (loss)		74,459		28,200		6,720		(30,784)		78,595


For the Year Ended December 31, 2014

	U.S.		International		Renewable		Reconciling
	Telecom		Telecom		Energy		Items (1)		Consolidated
Revenue
Wireless	$	153,040	$	88,650	$	—	$	—	$	241,690
Wireline		26,155		59,129		—		—		85,284
Equipment and Other		1,196		7,728		449		—		9,373
Total Revenue		180,391		155,506		449		—		336,347
Depreciation and amortization		19,070		28,079		105		3,980		51,234
Non-cash stock-based compensation		—		—		—		4,323		4,323
Operating income (loss)		85,519		28,674		(2,218)		(26,399)		85,576



	U.S.		International		Renewable		Reconciling
	Telecom		Telecom		Energy		Items (1)		Consolidated
December 31, 2016
Net fixed assets	$	129,274	$	372,741	$	130,268	$	15,429	$	647,712
Goodwill		35,269		24,326		3,279		—		62,873
Total assets		240,006		597,454		190,253		170,505		1,198,218
December 31, 2015
Net fixed assets	$	119,596	$	133,262	$	106,560	$	14,085	$	373,503
Goodwill		39,639		5,438		—		—		45,077
Total assets		227,707		278,770		122,788		315,739		945,004


		Capital Expenditures

		U.S.		International		Renewable		Reconciling
Year ended December 31,		Telecom		Telecom		Energy		Items (1)		Consolidated
2016	$	31,983	$	62,808	$	22,615	$	6,876	$	124,282
2015		37,588		22,804		38		4,323		64,753

(1)

Reconciling items refer to corporate overhead expenses and consolidating adjustments.

Schedule of revenues and long lived assets by geographic location


	2016				2015				2014
			Long-Lived				Long-Lived				Long-Lived
	Revenues		Assets		Revenues		Assets		Revenues		Assets

U.S.	$	198,300	$	265,528	$	204,024	$	247,169	$	180,841	$	240,341
Guyana		91,653		132,609		88,894		109,829		86,931		108,738
U.S Virgin Islands		58,431		110,773		11,542		9,621		11,583		10,027
Bermuda		83,006		94,976		45,745		13,483		46,917		12,507
Other Foreign Countries		25,613		76,575		5,164		927		10,075		5,419
	$	457,003	$	680,461	$	355,369	$	381,029	$	336,347	$	377,032

QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2016

QUARTERLY FINANCIAL DATA (UNAUDITED)

Summary of the Company's quarterly results of operations

16. QUARTERLY FINANCIAL DATA (UNAUDITED)

Following is a summary of the Company’s quarterly results of operations for the years ended December 31, 2016 and 2015 (in thousands):


	2016 Consolidated for the Three Months Ended
	March 31		June 30		September 30		December 31
Total revenue	$	89,686	$	99,991	$	138,795	$	128,531
Operating expenses		73,793		98,079		116,714		118,620
Income from operations		15,893		1,912		22,081		9,911
Other income (expense), net		(464)		(853)		(785)		(2,321)
Income (Loss)from continuing operations before income taxes		15,429		1,059		21,296		7,590
Income taxes		4,631		2,945		9,602		3,982
Income (Loss) from continuing operations		10,798		(1,886)		11,694		3,608
Income from discontinued operations:
Income from discontinued operations, net of tax		—		—		—		—
Net income		10,798		(1,886)		11,694		3,608
Net income attributable to non-controlling interests, net of tax:
Continuing operations		(4,678)		(1,200)		(4,523)		(1,712)
Net income attributable to ATN International, Inc. stockholders		6,120		(3,086)		7,171		1,896
Net income per weighted average basic share attributable to ATN International, Inc. stockholders
Continuing operations		0.38		(0.19)		0.44		0.12
Total		0.38		(0.19)		0.44		0.12
Net income per weighted average diluted share attributable to ATN International, Inc. stockholders
Continuing operations		0.38		(0.19)		0.44		0.12
Total		0.38		(0.19)		0.44		0.12


	2015 Consolidated for the Three Months Ended
	March 31		June 30		September 30		December 31
Total revenue	$	85,345	$	90,326	$	96,782	$	82,916
Operating expenses		66,187		61,594		74,258		74,735
Income from operations		19,158		28,732		22,524		8,181
Other income (expense), net		(20,528)		(706)		(742)		(418)
Income from continuing operations before income taxes		(1,370)		28,026		21,782		7,763
Income taxes		(487)		13,008		10,134		1,482
Income from continuing operations		(883)		15,018		11,648		6,281
Income from discontinued operations:
Gain on sale of discontinued operations, net of tax		389		—		—		702
Income from discontinued operations, net of tax		390		—		—		702
Net income		(493)		15,018		11,648		6,983
Net income attributable to non-controlling interests, net of tax:
Continuing operations		(2,777)		(5,568)		(5,072)		(2,799)
Discontinued operations		—		—		—		—
Disposal of discontinued operations		—		—		—		—
Net income attributable to ATN International, Inc. stockholders		(3,270)		9,450		6,576		4,184
Net income per weighted average basic share attributable to ATN International, Inc. stockholders
Continuing operations		(0.18)		0.59		0.41		0.17
Discontinued operations:
Discontinued operations		0.07		—		—		—
Gain on sale of discontinued operations		—		—		—		—
Total discontinued operations		0.07		—		—		—
Total		(0.11)		0.59		0.41		0.17
Net income per weighted average diluted share attributable to ATN International, Inc. stockholders
Continuing operations		(0.18)		0.59		0.41		0.16
Discontinued operations:
Discontinued operations		0.07		—		—		—
Gain on Sale of discontinued operations		—		—		—		—
Total discontinued operations		0.07		—		—		—
Total		(0.11)		0.59		0.41		0.16

The Company determined that the impact of the correction of these errors was not material to the current or any prior period financial statements.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Reclassifications (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2015
Prior period corrections
Reclassification, decrease (increase) to expense	$ (0.8)	$ 0.7
Termination and access fees
Prior period corrections
Reclassification, decrease (increase) to expense			$ (4.1)
Engineering and operations expenses
Prior period corrections
Reclassification, decrease (increase) to expense			2.3
Selling and marketing expense
Prior period corrections
Reclassification, decrease (increase) to expense			2.4
General and administrative expense
Prior period corrections
Reclassification, decrease (increase) to expense			$ (0.5)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Deposits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash
Deposit with non-insured institutions	$ 24.3
Guyanese dollars
Cash
Cash (in GYD)	$ 7.5	$ 3.8
Minimum \| Corporate bonds
Cash
Investment maturity term	3 months
Maximum
Cash
Investment maturity term	3 months
Maximum \| Corporate bonds
Cash
Investment maturity term	1 year

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fixed Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fixed assets
Accrued asset retirement obligations	$ 3.2	$ 3.0
Minimum
Fixed assets
Useful life	3 years
Maximum
Fixed assets
Useful life	39 years

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Acquired Intangibles (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Intangible assets
Telecommunications license impairment	$ 0.0	$ 0.0
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, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated other comprehensive income (loss)
Stockholders' Equity Attributable to Parent, Beginning Balance	$ 680,299
Adjust funded status of pension plan, net of tax	5,251	$ (809)	$ (724)
Adjust funded status of pension plan, tax	700	700	600
Foreign currency translation adjustment	(687)	26	4
Unrealized Gain on Marketable Securities	868
Stockholders' Equity Attributable to Parent, Ending Balance	677,055	680,299
Short Term Investments
Accumulated other comprehensive income (loss)
Unrealized Gain on Marketable Securities	868
Stockholders' Equity Attributable to Parent, Ending Balance	868
Projected Pension Benefit Obligation
Accumulated other comprehensive income (loss)
Stockholders' Equity Attributable to Parent, Beginning Balance	(3,481)	(2,672)	(1,949)
Adjust funded status of pension plan, net of tax	5,251	(809)	(723)
Stockholders' Equity Attributable to Parent, Ending Balance	1,770	(3,481)	(2,672)
Amounts reclassified from accumulated other comprehensive income, net of tax	1,300	200	200
Translation Adjustment
Accumulated other comprehensive income (loss)
Stockholders' Equity Attributable to Parent, Beginning Balance	(223)	(249)	(253)
Foreign currency translation adjustment	(687)	26	4
Stockholders' Equity Attributable to Parent, Ending Balance	(910)	(223)	(249)
Accumulated Other Comprehensive Income/(Loss)
Accumulated other comprehensive income (loss)
Stockholders' Equity Attributable to Parent, Beginning Balance	(3,704)	(2,921)	(2,202)
Adjust funded status of pension plan, net of tax	5,251	(809)	(723)
Foreign currency translation adjustment	(687)	26	4
Unrealized Gain on Marketable Securities	868
Stockholders' Equity Attributable to Parent, Ending Balance	$ 1,728	$ (3,704)	$ (2,921)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Grants (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounting for grants
Amount spent in capital expenditures	$ 124,282	$ 64,753	$ 58,300
U.S. Telecom
Accounting for grants
Amount received	$ 9,500	1,300
Minimum
Accounting for grants
Long-term power purchase agreements term	10 years
Term of depreciation of grant	5 years
Maximum
Accounting for grants
Long-term power purchase agreements term	25 years
Term of depreciation of grant	20 years
Stimulus programs
Accounting for grants
Amount spent in capital expenditures	$ 99,300
Amount that has been funded or will be funded	73,900
Universal Service Fund programs
Accounting for grants
Amount received	$ 17,700	$ 7,900

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred Tax Assets, Net, Noncurrent	$ 407
Deferred Tax Liabilities, Net, Noncurrent	$ 46,622	$ 45,406
Accounting Standards Update 2015-17
Deferred Tax Assets, Net, Current		(3,900)
Deferred Tax Assets, Net, Noncurrent		3,900
Deferred Tax Liabilities, Net, Current		(200)
Deferred Tax Liabilities, Net, Noncurrent		$ 200

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Risk (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues \| Customer concentration \| AT&T
Credit concentrations and significant customers
Percentage of concentration risk	14.00%	17.00%	26.00%
Revenues \| Customer concentration \| Verizon
Credit concentrations and significant customers
Percentage of concentration risk	12.00%	19.00%	16.00%
Accounts receivable \| Credit concentration \| AT&T
Credit concentrations and significant customers
Percentage of concentration risk	17.00%	17.00%
Accounts receivable \| Credit concentration \| Verizon
Credit concentrations and significant customers
Percentage of concentration risk	12.00%	13.00%

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair value Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair value measurements
Long-term debt, carrying value	$ 156,800	$ 32,900
Significant Other Observable Inputs (Level 2)
Fair value measurements
Marketable securities, fair value	2,000
Long-term Debt, Fair Value	159,900	32,900
Recurring basis \| Total
Fair value measurements
Total assets measured at fair value	68,636	76,640
Recurring basis \| Certificate of deposit \| Total
Fair value measurements
Cash and cash equivalents	391	377
Recurring basis \| Money market funds \| Total
Fair value measurements
Cash and cash equivalents	29,027	76,263
Recurring basis \| Short Term Investments \| Total
Fair value measurements
Investments, Fair Value Disclosure	9,237
Recurring basis \| Commercial Paper \| Total
Fair value measurements
Cash and cash equivalents	29,981
Recurring basis \| Quoted Prices in Active Markets (Level 1)
Fair value measurements
Total assets measured at fair value	30,778	76,263
Recurring basis \| Quoted Prices in Active Markets (Level 1) \| Money market funds
Fair value measurements
Cash and cash equivalents	29,027	76,263
Recurring basis \| Quoted Prices in Active Markets (Level 1) \| Short Term Investments
Fair value measurements
Investments, Fair Value Disclosure	1,751
Recurring basis \| Significant Other Observable Inputs (Level 2)
Fair value measurements
Total assets measured at fair value	37,858	377
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Certificate of deposit
Fair value measurements
Cash and cash equivalents	391	$ 377
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Short Term Investments
Fair value measurements
Investments, Fair Value Disclosure	7,486
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Commercial Paper
Fair value measurements
Cash and cash equivalents	$ 29,981

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Anti-dilution (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
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	2
Basic weighted-average shares of common stock outstanding	16,131	16,022	15,898
Stock options (in shares)	96	120	115
Diluted weighted-average shares of common stock outstanding	16,227	16,142	16,013
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	2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Stock-Based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Stock-based compensation
Non-cash stock-based compensation	$ 6,410	$ 4,975	$ 4,323
Stock options
Stock-based compensation
Vesting period	4 years
Non-cash stock-based compensation	$ 100	$ 400	$ 900
Restricted Stock
Stock-based compensation
Restricted shares of common stock issued (in shares)	100,005	93,864	109,318
Vesting period	4 years
Non-cash stock-based compensation	$ 6,200	$ 3,400	$ 3,100
Acquisitions \| Management
Stock-based compensation
Non-cash stock-based compensation	$ 100	$ 300

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

ACQUISITIONS AND DISPOSITIONS - Purchase Price Allocation (Details) - USD ($) $ in Thousands				1 Months Ended		3 Months Ended								12 Months Ended			24 Months Ended
	Jul. 01, 2016	May 03, 2016	Apr. 07, 2016	Jul. 31, 2016	Mar. 31, 2015	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015
Consideration Transferred
Pension funding required by Innovative acquisition														$ 22,494
Purchase price allocation:
Goodwill						$ 62,873				$ 45,077				62,873	$ 45,077		$ 45,077
Gain on KeyTech bargain purchase														7,304
Increase in goodwill																	0
Purchase price allocation BDC:
Revenue						128,531	$ 138,795	$ 99,991	$ 89,686	82,916	$ 96,782	$ 90,326	$ 85,345	457,003	355,369	$ 336,347
Income (Loss) from Continuing Operations before Income Taxes						7,590	$ 21,296	$ 1,059	$ 15,429	7,763	$ 21,782	$ 28,026	$ (1,370)	45,374	56,201	86,168
Transaction related charges														16,279	7,182	$ 2,959
Loss on deconsolidation of subsidiary															19,937
Deconsolidation of non-controlling interests														310	(20,013)
Goodwill
Impairment of long-lived assets														3,600
Goodwill impairment														$ 7,491
Discount rate (as a percent)														14.00%
Impairment of long-lived assets														$ 11,425
Aruba
Purchase price allocation BDC:
Revenue														2,800
Postretirement Benefits
Consideration Transferred
Restricted cash						5,100								5,100
Non-Controlling Interests
Purchase price allocation BDC:
Deconsolidation of non-controlling interests														310	(20,013)
BDC
Consideration Transferred
Cash consideration		$ 7,045
Total value to allocate
Business Combination Total Value Allocation		7,045
Purchase price allocation BDC:
Acquired 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)
Consideration Transferred
Cash consideration		34,518
Total value to allocate
Non-controlling interests		32,909
Business Combination Total Value Allocation		67,427
Purchase price allocation:
Cash		8,185
Accounts receivable		6,451
Other current assets		3,241
Property, plant and equipment		100,892
Intangible assets		10,590
Other 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 KeyTech bargain purchase		7,304
Purchase price allocation BDC:
Revenue														55,500
Income (Loss) from Continuing Operations before Income Taxes														2,800
Transaction related charges relating to legal, accounting and consulting services.		4,300
Transaction related charges														3,400
One Communications (formerly KeyTech) and BDC
Consideration Transferred
Total consideration		41,563
Total value to allocate
Business Combination Total Value Allocation		$ 74,472
Innovative
Consideration Transferred
Total consideration	$ 111,860
Cash-on-hand used to fund the purchase price	51,900
Pension funding required by Innovative acquisition						22,500
Purchase price reduction	400
Restricted cash	5,300
Purchase price	145,000
Purchase price adjustments	5,300
Total value to allocate
Non-controlling interests	221
Business Combination Total Value Allocation	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 liability	(29,149)
Net assets acquired	112,081
Purchase price allocation BDC:
Revenue														53,000
Income (Loss) from Continuing Operations before Income Taxes														1,500
Transaction related charges relating to legal, accounting and consulting services.	4,100
Transaction related charges														2,200
Innovative \| Pension Benefit
Consideration Transferred
Pension funding required by Innovative acquisition						22,500
Innovative \| Postretirement Benefits
Consideration Transferred
Cash-on-hand used to fund the purchase price	27,800
Payments for acquisition other postretirement benefit unfunded														5,100
Innovative \| Term loans
Consideration Transferred
Cash consideration	51,000
Debt instrument, face amount	$ 60,000
Telecommunication Equipment
Purchase price allocation BDC:
Discounted rate used for cash flows		15.00%
US Telecom
Consideration Transferred
Cash consideration				$ 9,100
Purchase price allocation:
Property, plant and equipment				10,200
Goodwill				3,100
Deferred tax liability				(3,500)
Other long term liabilities				700
Increase in goodwill				2,700
Increase in deferred tax liabilities				$ 2,700
Vibrant Energy
Consideration Transferred
Cash consideration			$ 3,500
Total consideration			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
Purchase price allocation BDC:
Contingent Consideration			2,700
Revenue														400
Transaction related charges relating to legal, accounting and consulting services.			$ 11,400
Transaction related charges														$ 10,100
Minimum
Purchase price allocation BDC:
Useful life														3 years
Minimum \| Innovative Pension Benefit
Goodwill
Discount rate (as a percent)	3.60%
Minimum \| Innovative \| Income Approach \| Non-Controlling Interests
Goodwill
Discount rate (as a percent)	15.00%
Minimum \| Innovative \| Income Approach \| Designated as cash flow hedges
Goodwill
Discount rate (as a percent)	14.00%
Minimum \| Telecommunication Equipment
Purchase price allocation BDC:
Useful life	1 year	3 years
Minimum \| Telecommunication Equipment \| Customer relationships
Purchase price allocation BDC:
Useful life	7 years	9 years
Maximum
Purchase price allocation BDC:
Useful life														39 years
Maximum \| Innovative Pension Benefit
Goodwill
Discount rate (as a percent)	3.90%
Maximum \| Innovative \| Income Approach \| Non-Controlling Interests
Goodwill
Discount rate (as a percent)	25.00%
Maximum \| Innovative \| Income Approach \| Designated as cash flow hedges
Goodwill
Discount rate (as a percent)	25.00%
Maximum \| Telecommunication Equipment
Purchase price allocation BDC:
Useful life	18 years	18 years
Maximum \| Telecommunication Equipment \| Customer relationships
Purchase price allocation BDC:
Useful life	13 years	12 years
International Telecom
Purchase price allocation:
Goodwill						$ 24,326				$ 5,438				$ 24,326	$ 5,438		$ 5,438
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| International Telecom
Purchase price allocation BDC:
Deconsolidation of non-controlling interests					$ 20,000
Deconsolidation, Revaluation of Retained Investment, Gain (Loss), Amount					100
Nonoperating Income (Expense) \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| International Telecom
Purchase price allocation BDC:
Loss on deconsolidation of subsidiary					$ 19,900

ACQUISITIONS AND DISPOSITIONS - Pro Forma Results (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Jul. 01, 2016	Dec. 31, 2016	Dec. 31, 2015
Pro forma
Acquisitions
Impairment charges		$ 5,400	$ 168,700
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)
As reported
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 (formerly KeyTech)
Acquisitions
Retirement of debt		$ 24,700
One Communications (formerly KeyTech) \| Pro forma
Acquisitions
Impairment charges		4,300	$ 85,600
Innovative
Acquisitions
Retirement of debt		185,800
Addition of debt	$ 60,000
Innovative \| Pro forma
Acquisitions
Impairment charges		$ 1,100	$ 83,100

DISCONTINUED OPERATIONS - SALE OF U.S. RETAIL WIRELESS BUSINESS (Details) - Alltel Sale - AT&T Mobility - USD ($) $ in Millions		12 Months Ended
	Sep. 20, 2013	Dec. 31, 2015	Dec. 31, 2014
Liabilities sold:
Additional gain (loss) on sale of assets		$ 1.1	$ 1.1
Alltel Wireless
SALE OF U.S. RETAIL WIRELESS BUSINESS
Consideration for sale of operations in all-cash transaction	$ 780.0
Proceeds:
Working capital	$ 16.8

ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
ACCOUNTS RECEIVABLE
Accounts receivable	$ 58,568	$ 48,314
Less: allowance for doubtful accounts	(13,149)	(9,294)
Total accounts receivable, net	45,419	39,020
U.S. wireless, Retail
ACCOUNTS RECEIVABLE
Accounts receivable	36,026	23,805
U.S. wireless, Wholesale
ACCOUNTS RECEIVABLE
Accounts receivable	22,502	24,341
Other
ACCOUNTS RECEIVABLE
Accounts receivable	$ 40	$ 168

FIXED ASSETS (Details) - USD ($) $ in Thousands	12 Months Ended
FIXED ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fixed Assets
Total plant in service	$ 1,036,370	$ 766,144
Total property, plant, and equipment	1,138,362	807,247
Less: Accumulated depreciation	(490,650)	(433,744)
Net fixed assets	647,712	373,503
Depreciation and amortization	73,300	55,900	$ 50,300
Gain on disposition of long-lived assets	(27)	2,823
Capital expenditures offset by grants	$ 2,300	2,600	$ 2,300
U.S. Telecom
Fixed Assets
Gain on disposition of long-lived assets		2,800
Minimum
Fixed Assets
Useful Life	3 years
Maximum
Fixed Assets
Useful Life	39 years
Telecommunications equipment and towers
Fixed Assets
Total plant in service	$ 802,415	553,237
Capital leased assets, cost	13,800	2,700
Capital leased assets, net	$ 12,400	$ 1,800
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	$ 115,932	$ 111,446
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	$ 44,147	$ 54,665
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	$ 43,609	$ 18,540
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	$ 12,043	$ 8,882
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	$ 325	$ 11,592
Land
Fixed Assets
Total plant in service	10,242	1,198
Furniture and fixtures
Fixed Assets
Total plant in service	$ 7,657	$ 6,584
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	$ 101,992	$ 41,103
Assets Held under Capital Leases [Member]
Fixed Assets
Capital Leased Assets, Remaining amount due	$ 1,200	$ 0

GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	12 Months Ended	24 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill
Impairment of long-lived assets	$ 3,600
Goodwill impairment	$ 7,491
Discount rate (as a percent)	14.00%
Non-cash impairment charges	$ 11,425
Changes in the carrying amounts of goodwill		$ 0
U.S. Telecom
Goodwill
Goodwill impairment	$ 7,491

GOODWILL AND INTANGIBLE ASSETS - Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended	24 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Changes in the carrying amounts of goodwill		$ 0
Balance at the beginning of the period	$ 45,077
Acquisitions	26,986
Deconsolidation of Subsidiary	(1,698)
Impairment charge	(7,491)
Goodwill, Gross	70,364
Accumulated impairment	(7,491)
Balance at the end of the period	62,873	45,077
U.S. Telecom
Goodwill [Roll Forward]
Balance at the beginning of the period	39,639
Acquisitions	3,121
Impairment charge	(7,491)
Goodwill, Gross	42,759
Accumulated impairment	(7,491)
Balance at the end of the period	35,268	39,639
International Telecom
Goodwill [Roll Forward]
Balance at the beginning of the period	5,438
Acquisitions	20,586
Deconsolidation of Subsidiary	(1,698)
Goodwill, Gross	24,326
Balance at the end of the period	24,326	$ 5,438
Renewable energy
Goodwill [Roll Forward]
Acquisitions	3,279
Goodwill, Gross	3,279
Balance at the end of the period	$ 3,279

GOODWILL AND INTANGIBLE ASSETS - Change In Carrying Amount Of Telecommunications Licenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Telecommunications licenses
Impairment of intangible assets	$ 0	$ 0
Changes in the carrying amount of the company's telecommunications licenses, by operating segment
Balance at the beginning of the period	43,468
Balance at the end of the period	48,291	43,468
Telecommunications Licenses
Telecommunications licenses
Impairment of intangible assets	0	0
Changes in the carrying amount of the company's telecommunications licenses, by operating segment
Balance at the beginning of the period	43,468	44,090
Deconsolidation of subsidiary	(2,178)
Acquired licenses	7,623
Amortization	(622)	(622)
Balance at the end of the period	48,291	43,468
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	24,944	24,944
Balance at the end of the period	24,944	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	18,524	19,146
Deconsolidation of subsidiary	(2,178)
Acquired licenses	7,623
Amortization	(622)	(622)
Balance at the end of the period	$ 23,347	$ 18,524

GOODWILL AND INTANGIBLE ASSETS - Customer Relationships (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-lived intangible assets
Impairment of other intangibles	$ 300
U.S. Telecom
Finite-lived intangible assets
Other intangible assets	4,900
Customer relationships
Finite-lived intangible assets
Amortization	2,000	$ 400	$ 300
Customer relationships \| International Telecom
Future Amortization
2017	3,281
2018	2,411
2019	1,897
2020	1,528
2021	1,300
Thereafter	4,612
Total	15,029
Franchise Rights \| U.S. Telecom
Finite-lived intangible assets
Other intangible assets	3,000
Trade names \| U.S. Telecom
Finite-lived intangible assets
Other intangible assets	$ 1,900

LONG-TERM DEBT (Details) - USD ($) $ in Thousands			12 Months Ended
LONG-TERM DEBT (Details) - USD ($) $ in Thousands	Jul. 01, 2016	May 03, 2016	Dec. 31, 2016	Dec. 19, 2016	Jan. 11, 2016	Jan. 10, 2016	Dec. 24, 2014	Dec. 19, 2014
Amended Credit Facility
Long-term debt
Maximum borrowing capacity					$ 400,000	$ 275,000
Revolving credit facility \| Amended Credit Facility
Long-term debt
Maximum borrowing capacity					200,000			$ 225,000
Revolving credit facility \| Amended Credit Facility \| Minimum
Long-term debt
Commitment fee (as a percent)			0.175%
Revolving credit facility \| Amended Credit Facility \| Minimum \| LIBOR
Long-term debt
Basis spread on variable rate (as a percent)			1.50%
Revolving credit facility \| Amended Credit Facility \| Minimum \| Base rate
Long-term debt
Basis spread on variable rate (as a percent)			0.50%
Revolving credit facility \| Amended Credit Facility \| Maximum
Long-term debt
Commitment fee (as a percent)			0.25%
Revolving credit facility \| Amended Credit Facility \| Maximum \| LIBOR
Long-term debt
Basis spread on variable rate (as a percent)			1.75%
Revolving credit facility \| Amended Credit Facility \| Maximum \| Base rate
Long-term debt
Basis spread on variable rate (as a percent)			0.75%
Letter of credit sub-facility
Long-term debt
Borrowings			$ 0
Outstanding letters of credit			10,600
Letter of credit sub-facility \| Amended Credit Facility
Long-term debt
Maximum borrowing capacity								10,000
Letter of credit sub-facility \| Amended Credit Facility \| Wholesale Mobility Funds
Long-term debt
Maximum borrowing capacity								25,000
Letter of credit sub-facility \| Credit facility
Long-term debt
Borrowings			$ 0
Swingline sub-facility \| Amended Credit Facility
Long-term debt
Maximum borrowing capacity								$ 10,000
Swingline sub-facility \| Amended Credit Facility \| Federal Funds Effective Rate
Long-term debt
Basis spread on variable rate (as a percent)			0.50%
Swingline sub-facility \| Amended Credit Facility \| Minimum \| Base rate
Long-term debt
Basis spread on variable rate (as a percent)			1.00%
Ahana Debt
Long-term debt
Outstanding debt			$ 2,500
Ahana Debt \| Series A Notes
Long-term debt
Secured debt principal amount				$ 20,600
Stated interest rate				4.427%
Ahana Debt \| Series B Notes
Long-term debt
Secured debt principal amount				$ 45,200
Effective interest rate (as a percent)				5.327%
Ahana Debt \| Series A and Series B Notes
Long-term debt
Outstanding debt			$ 65,800
Ahana Debt \| Term loans
Long-term debt
Term loan assumed							$ 38,900
Ahana Debt \| Term loans \| Minimum
Long-term debt
Effective interest rate (as a percent)			4.50%
Ahana Debt \| Term loans \| Maximum
Long-term debt
Effective interest rate (as a percent)			6.00%
PSE&G \| Term loans
Long-term debt
Stated interest rate			11.30%
One Communications (formerly KeyTech)
Long-term debt
Cash consideration		$ 34,518
One Communications (formerly KeyTech) \| Minimum
Long-term debt
Potential cash dividend					13,000
One Communications (formerly KeyTech) \| Amended Credit Facility
Long-term debt
Secured debt principal amount					$ 60,000
One Communications (formerly KeyTech) \| Term loans
Long-term debt
Term loan assumed		$ 35,400
Outstanding debt			$ 32,100
One Communications (formerly KeyTech) \| Term loans \| Three month LIBOR
Long-term debt
Basis spread on variable rate (as a percent)		3.25%
Description of variable rate basis		three-month LIBOR
Innovative \| Term loans
Long-term debt
Secured debt principal amount	$ 60,000
Stated interest rate	4.00%
Outstanding debt			60,000
Finance costs to lock in rate	$ 900
Deferred finance costs, net			$ 800
Cash consideration	$ 51,000

GOVERNMENT GRANTS (Details) - USD ($) $ in Millions	1 Months Ended		12 Months Ended
GOVERNMENT GRANTS (Details) - USD ($) $ in Millions	Oct. 31, 2014	Aug. 31, 2013	Dec. 31, 2016
MOBILITY FUND GRANTS
Period over which a portion of the Mobility Funds is used to offset the costs of supporting the networks			5 years
Letter of credit sub-facility
MOBILITY FUND GRANTS
Letters of credit posted to USAC			$ 10.6
Wholesale Mobility Funds
MOBILITY FUND GRANTS
Mobility Funds approved by FCC	$ 2.4	$ 21.7
Wholesale Mobility Funds \| U.S. Telecom
MOBILITY FUND GRANTS
Mobility Funds received			19.7
Mobility funds received and recorded to date			4.6
Wholesale Mobility Funds \| U.S. Telecom \| Operating Expenses
MOBILITY FUND GRANTS
Mobility Funds received			13.9
Wholesale Mobility Funds \| U.S. Telecom \| Property, Plant and Equipment [Member]
MOBILITY FUND GRANTS
Grant funds used to offset fixed asset related costs			5.8
Wholesale Mobility Funds \| U.S. Telecom \| Other current liabilities
MOBILITY FUND GRANTS
Grant funds used to offset fixed asset related costs			5.8
Wholesale Mobility Funds \| U.S. Telecom \| Other long-term liabilities
MOBILITY FUND GRANTS
Mobility Funds received			$ 3.4

EQUITY (Details) - USD ($)	12 Months Ended			145 Months Ended
EQUITY (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	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 Options
Exercised (in shares)	(43,053)	(87,378)	(43,034)
Treasury Stock
Shares Repurchased	70,686	37,567	34,293
Aggregate Cost	$ 4,873,000	$ 2,705,000	$ 2,160,000
Aggregate cost to satisfy tax withholdings and exercise obligations	$ 2,775,000	$ 2,705,000	$ 2,160,000
Shares repurchased to satisfy tax withholdings and exercise obligations	38,279	37,567	34,293
Average Repurchase Price (in dollars per share)	$ 72.50	$ 72.01	$ 63.01
2004 Repurchase Plan
Treasury Stock
Authorized amount						$ 5,000,000
Shares Repurchased				4,100,000
2016 Repurchase Plan
Treasury Stock
Authorized amount					$ 50,000,000
Value of shares available for repurchase	$ 49,900,000
2004 and 2016 Repurchase Plan
Treasury Stock
Shares Repurchased	32,407
Aggregate Cost	$ 2,195,000
Average Repurchase Price (in dollars per share)	$ 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)	268,875	351,253
Granted (in shares)		5,000
Exercised (in shares)	(43,053)	(87,378)
Outstanding at the end of the period (in shares)	225,822	268,875	351,253
Vested and expected to vest at the end of the period (in shares)	225,554	268,011
Exercisable at the end of the period (in shares)	222,072	248,875
Weighted Avg. Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 38.64	$ 36.55
Granted (in dollars per share)		71.43
Exercised (in dollars per share)	32.70	32.14
Outstanding at the end of the period (in dollars per share)	39.77	38.64	$ 36.55
Vested and expected to vest at the end of the period (in dollars per share)	39.73	38.53
Exercisable at the end of the period (in dollars per share)	$ 39.23	$ 38.05
Weighted Average Remaining Contractual Term
Outstanding	3 years 10 months 24 days	4 years 8 months 12 days
Vested and expected to vest	3 years 10 months 24 days	4 years 8 months 12 days
Exercisable	3 years 9 months 18 days	4 years 6 months
Aggregate Intrinsic Value
Outstanding	$ 9,114,963	$ 10,646,006
Vested and expected to vest	9,112,630	10,640,134
Exercisable	9,082,338	$ 9,998,956
Unamortized stock based compensation
Unamortized stock based compensation	$ 100,000
Weighted-average period for recognition of unamortized stock-based compensation cost	2 years 7 months 6 days
Stock-based compensation, additional disclosures
Weighted-average fair value of options granted (in dollars per share)		$ 30.70
Aggregate intrinsic value of options exercised	$ 1,591,000	$ 3,488,000	$ 1,098,000
Cash proceeds received upon exercise of options	1,060,000	1,999,000	1,621,000
Excess tax benefits from share-based compensation	$ 591,000	1,423,000	513,000
Weighted-average assumptions using Black-Scholes option-pricing model for estimating fair value of each option granted
Risk-free interest rate (as a percent)	1.55%
Expected dividend yield (as a percent)	1.76%
Expected life	6 years 3 months
Expected volatility (as a percent)	51.85%
Stock compensation expense
Stock compensation expense	$ 100,000	900,000	1,400,000
Restricted Stock
Stock-based compensation
Vesting period	4 years
Unamortized stock based compensation
Unamortized stock based compensation	$ 11,200,000
Weighted-average period for recognition of unamortized stock-based compensation cost	2 years 6 months
Stock compensation expense
Stock compensation expense	$ 6,200,000	$ 4,300,000	$ 3,400,000
Shares
Unvested at the beginning of the period (in shares)	218,401	195,143
Granted (in shares)	100,005	93,864	109,318
Forfeited (in shares)	(1,125)	(1,687)
Vested and issued (in shares)	(88,241)	(68,919)
Unvested at the end of the period (in shares)	229,040	218,401	195,143
Weighted Avg. Fair Value
Unvested at the beginning of the period (in dollars per share)	$ 60.60	$ 55.13
Granted (in dollars per share)	73.34	66.26
Forfeited (in dollars per share)	66.44	65.18
Vested and issued (in dollars per share)	58.01	52.70
Unvested at the end of the period (in dollars per share)	$ 67.13	$ 60.60	$ 55.13
2008 Plan \| Restricted Stock
Stock-based compensation
Vesting period	4 years

INCOME TAXES - Components of Income Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Components of income before income taxes
Domestic									$ 28,047	$ 50,563	$ 57,767
Foreign									17,327	5,638	28,401
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	$ 7,590	$ 21,296	$ 1,059	$ 15,429	$ 7,763	$ 21,782	$ 28,026	$ (1,370)	$ 45,374	$ 56,201	$ 86,168

INCOME TAXES - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
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									$ 15,782	$ 19,652	$ 30,160
Non-controlling interest									(2,893)	(2,807)	(1,229)
Foreign tax rate differential									(3,074)	1,659	(5,757)
Over (under) provided in prior periods									1,069	652	(401)
Nondeductible expenses									1,134	1,113	757
Goodwill Impairment									2,622
Capitalized transactions costs									3,138
Change in tax reserves									2,561	2,564	2,153
State Taxes, net of federal benefit									1,853	935	1,252
Change in valuation allowance									(7,292)	(5,949)	(2,549)
Foreign tax credit expiration									4,179	6,396	2,999
Other, net									2,081	(78)	763
Total Income Tax Expense	$ 3,982	$ 9,602	$ 2,945	$ 4,631	$ 1,482	$ 10,134	$ 13,008	$ (487)	$ 21,160	$ 24,137	$ 28,148

INCOME TAXES - Components Of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
United States-Federal									$ 15,763	$ (1,308)	$ 14,761
United States-State									505	(383)	1,347
Foreign									10,528	7,959	12,153
Total current income tax expense									26,796	6,268	28,261
Deferred:
United States-Federal									(1,880)	16,760	5,205
United States-State									(291)	1,636	466
Foreign									(3,465)	(527)	(5,784)
Total deferred income tax expense (benefit)									(5,636)	17,869	(113)
Consolidated:
United States-Federal									13,883	15,452	19,966
United States-State									214	1,253	1,813
Foreign									7,063	7,432	6,369
Total Income Tax Expense	$ 3,982	$ 9,602	$ 2,945	$ 4,631	$ 1,482	$ 10,134	$ 13,008	$ (487)	21,160	24,137	$ 28,148
Deferred tax assets:
Receivables reserve	1,470				702				1,470	702
Temporary differences not currently deductible for tax	8,918				7,236				8,918	7,236
Deferred compensation	2,461				2,135				2,461	2,135
Foreign tax credit carryforwards					4,180					4,180
Pension	1,085				1,153				1,085	1,153
Net operating losses	29,571				4,463				29,571	4,463
Total deferred tax asset	43,505				19,869				43,505	19,869
Deferred tax liabilities:
Property, plant and equipment, net	41,136				43,718				41,136	43,718
Intangible assets, net	6,122				13,743				6,122	13,743
Total deferred tax liabilities	47,258				57,461				47,258	57,461
Valuation allowance	(42,462)				(7,814)				(42,462)	(7,814)
Net deferred tax liabilities	(46,215)				(45,406)				(46,215)	(45,406)
Deferred tax assets:
Long term and total deferred tax asset	407								407
Deferred tax liabilities:
Long term and total deferred tax liabilities	(46,622)				(45,406)				(46,622)	(45,406)
Net deferred tax liabilities	(46,215)				(45,406)				$ (46,215)	(45,406)
Period of cumulative loss									3 years
Operating loss carryforward that will expire	83,500								$ 83,500
Operating loss carryforward with no expiration	3,400								3,400
Federal
Deferred tax liabilities:
Operating loss carryforwards	3,300								3,300
State
Deferred tax liabilities:
Operating loss carryforwards	8,900								8,900
NOL carryforward valuation allowance	500				2,000				500	2,000
Foreign
Deferred tax assets:
Tax Credits					4,100					4,100
Deferred tax liabilities:
Operating loss carryforwards	74,700								74,700
NOL carryforward valuation allowance	27,800				$ 1,700				27,800	$ 1,700
Valuation allowance established as part of purchase accounting	41,900								41,900
Remaining valuation allowance applied to other foreign deferred taxes	14,100								14,100
Undistributed earnings of foreign subsidiaries considered indefinitely reinvested	$ 288,600								$ 288,600

INCOME TAXES - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Activity related to unrecognized tax benefits
Unrecognized benefits, including interest and penalties	$ 20,000	$ 18,900	$ 16,500
Increase from prior period positions	1,400
Settlement of prior year positions	800
Decrease from lapse in statue of limitations	1,800
Gross unrecognized tax benefits at the beginning of the period	17,216	15,499	14,050
Increase in unrecognized tax benefits taken during a prior period	561		177
Increase in unrecognized tax benefits taken during the current period	2,321	1,717	1,498
Lapse in statute of limitations	(1,673)		(226)
Settlements	(521)
Gross unrecognized tax benefits at the end of the period	17,904	17,216	15,499
Interest and penalties accrued	2,100	$ 1,700	$ 1,000
Unrecognized tax benefits that would affect the effective tax rate if recognized	$ 20,000

RETIREMENT PLANS (Details) - USD ($)	12 Months Ended
RETIREMENT PLANS (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pension Benefit
Retirement plans
Employment period or credited service period for which participants' average salary or hourly wages is used as a base to calculate benefits	3 years
Weighted-average rates assumed in the actuarial calculations for the pension plan
Discount rate (as a percent)				4.30%	5.80%	5.80%
Annual salary increase (as a percent)				6.50%	6.50%	6.50%
Expected long-term return on plan assets (as a percent)	6.30%	6.50%	7.00%
Projected benefit obligations:
Balance at beginning of year	$ 14,400,000	$ 14,093,000
Innovative acquisition	69,178,000
Service cost	1,308,000	652,000	$ 612,000
Interest cost	2,002,000	766,000	720,000
Curtailment	128,000
Benefits and settlements paid	(6,445,000)	(1,329,000)
Actuarial (gain) loss	(4,437,000)	218,000
Experience Loss	(15,000)
Balance at end of year	76,119,000	14,400,000	14,093,000
Plan net assets:
Balance at beginning of year	11,946,000	13,165,000
Innovative acquisition	45,116,000
Actual return on plan assets	1,717,000	110,000
Company contributions	22,963,000
Benefits and settlements paid	(6,411,000)	(1,329,000)
Balance at end of year	75,331,000	11,946,000	13,165,000
Funded status of plan
Projected benefit obligation	14,400,000	14,093,000	14,093,000	$ 76,119,000	$ 14,400,000	$ 14,093,000
Under funded status of plan				(788,000)	(2,454,000)
Pension plan assets
Fair value of plan assets	11,946,000	13,165,000	13,165,000	$ 75,331,000	$ 11,946,000	$ 13,165,000
Weighted-average asset allocations (as a percent)				100.00%	100.00%
Amounts recognized on the consolidated balance sheets
Other Liabilities				$ 3,894,000	$ 2,454,000
Other Assets				3,105,000
Accumulated other comprehensive income / (loss), net of tax				1,418,000	(3,481,000)
Amounts recognized in accumulated other comprehensive loss
Net actuarial gain/(loss)				(386,000)	(5,836,000)
Accumulated other comprehensive loss, pre-tax				(386,000)	(5,836,000)
Accumulated other comprehensive income / (loss), net of tax				1,418,000	$ (3,481,000)
Components of the plan's net periodic pension cost
Service cost	1,308,000	652,000	612,000
Interest cost	2,002,000	766,000	720,000
Expected return on plan assets	(2,024,000)	(813,000)	(848,000)
Amortization of unrecognized net actuarial loss	1,271,000	245,000	218,000
Curtailment	128,000
Net periodic pension cost	2,685,000	850,000	$ 702,000
Additional disclosure
Expected contribution in 2017	833,000
Estimated Pension Benefits
2017				4,433,000
2018				4,001,000
2019				4,348,000
2020				4,461,000
2021				4,676,000
2022 - 2026				22,651,000
Total				44,570,000
Pension Benefit \| Quoted Prices in Active Markets (Level 1)
Plan net assets:
Balance at end of year	62,053,000
Pension plan assets
Fair value of plan assets	62,053,000			62,053,000
Pension Benefit \| Significant Other Observable Inputs (Level 2)
Plan net assets:
Balance at end of year	12,775,000
Pension plan assets
Fair value of plan assets	12,775,000			12,775,000
Pension Benefit \| Level 3
Plan net assets:
Balance at end of year	503,000
Pension plan assets
Fair value of plan assets	503,000			503,000
Pension Benefit \| Cash, cash equivalents, money markets and other
Plan net assets:
Balance at end of year	32,976,000
Pension plan assets
Fair value of plan assets	32,976,000			$ 32,976,000
Weighted-average asset allocations (as a percent)				43.80%	81.50%
Pension Benefit \| Cash, cash equivalents, money markets and other \| Quoted Prices in Active Markets (Level 1)
Plan net assets:
Balance at end of year	32,976,000
Pension plan assets
Fair value of plan assets	32,976,000			$ 32,976,000
Pension Benefit \| Common stock - domestic
Plan net assets:
Balance at end of year	17,715,000
Pension plan assets
Fair value of plan assets	17,715,000			$ 17,715,000
Weighted-average asset allocations (as a percent)				23.50%	14.70%
Pension Benefit \| Common stock - domestic \| Quoted Prices in Active Markets (Level 1)
Plan net assets:
Balance at end of year	17,715,000
Pension plan assets
Fair value of plan assets	17,715,000			$ 17,715,000
Pension Benefit \| Common stock - foreign
Plan net assets:
Balance at end of year	4,845,000
Pension plan assets
Fair value of plan assets	4,845,000			$ 4,845,000
Weighted-average asset allocations (as a percent)				6.40%
Pension Benefit \| Common stock - foreign \| Quoted Prices in Active Markets (Level 1)
Plan net assets:
Balance at end of year	3,629,000
Pension plan assets
Fair value of plan assets	3,629,000			$ 3,629,000
Pension Benefit \| Common stock - foreign \| Significant Other Observable Inputs (Level 2)
Plan net assets:
Balance at end of year	1,216,000
Pension plan assets
Fair value of plan assets	1,216,000			1,216,000
Pension Benefit \| Mutual funds - equities
Plan net assets:
Balance at end of year	7,141,000
Pension plan assets
Fair value of plan assets	7,141,000			$ 7,141,000
Weighted-average asset allocations (as a percent)				9.50%
Pension Benefit \| Mutual funds - equities \| Quoted Prices in Active Markets (Level 1)
Plan net assets:
Balance at end of year	6,180,000
Pension plan assets
Fair value of plan assets	6,180,000			$ 6,180,000
Pension Benefit \| Mutual funds - equities \| Significant Other Observable Inputs (Level 2)
Plan net assets:
Balance at end of year	961,000
Pension plan assets
Fair value of plan assets	961,000			961,000
Pension Benefit \| Exchange traded funds - equities
Plan net assets:
Balance at end of year	1,553,000
Pension plan assets
Fair value of plan assets	1,553,000			$ 1,553,000
Weighted-average asset allocations (as a percent)				2.10%
Pension Benefit \| Exchange traded funds - equities \| Quoted Prices in Active Markets (Level 1)
Plan net assets:
Balance at end of year	1,553,000
Pension plan assets
Fair value of plan assets	1,553,000			$ 1,553,000
Pension Benefit \| Fixed income mutual funds
Plan net assets:
Balance at end of year	10,142,000
Pension plan assets
Fair value of plan assets	10,142,000			$ 10,142,000
Weighted-average asset allocations (as a percent)				13.50%
Pension Benefit \| Fixed income mutual funds \| Significant Other Observable Inputs (Level 2)
Plan net assets:
Balance at end of year	10,142,000
Pension plan assets
Fair value of plan assets	10,142,000			$ 10,142,000
Pension Benefit \| Fixed income securities
Plan net assets:
Balance at end of year	456,000
Pension plan assets
Fair value of plan assets	456,000			$ 456,000
Weighted-average asset allocations (as a percent)				0.60%	3.80%
Pension Benefit \| Fixed income securities \| Significant Other Observable Inputs (Level 2)
Plan net assets:
Balance at end of year	456,000
Pension plan assets
Fair value of plan assets	456,000			$ 456,000
Pension Benefit \| Annuities
Plan net assets:
Balance at end of year	503,000
Pension plan assets
Fair value of plan assets	503,000			$ 503,000
Weighted-average asset allocations (as a percent)				0.70%
Pension Benefit \| Annuities \| Level 3
Plan net assets:
Balance at end of year	503,000
Pension plan assets
Fair value of plan assets	503,000			$ 503,000
GTT Pension Benefit
Projected benefit obligations:
Balance at beginning of year	14,400,000
Balance at end of year	12,549,000	14,400,000
Funded status of plan
Projected benefit obligation	$ 14,400,000	$ 14,400,000		12,549,000	$ 14,400,000
Plan Net Assets				8,655,000	11,946,000
Under funded status of plan				(3,894,000)	$ (2,454,000)
GTT Pension Benefit \| Minimum
Funded status of plan
Percentage of plan assets to be invested within Guyana	70.00%
GTT Pension Benefit \| Maximum
Funded status of plan
Percentage of plan assets to be invested within Guyana	80.00%
Innovative Pension Benefit
Projected benefit obligations:
Balance at end of year	$ 63,571,000
Funded status of plan
Projected benefit obligation	63,571,000			63,571,000
Plan Net Assets				66,676,000
Under funded status of plan				$ 3,105,000
Postretirement Benefits
Weighted-average rates assumed in the actuarial calculations for the pension plan
Discount rate (as a percent)				3.90%
One-percentage change in assumed health care cost trend rates
Accumulated postretirement benefit obligation, At trend				$ 5,108,000
Accumulated postretirement benefit obligation, At trend +1%				5,487,000
Impact of Accumulated postretirement benefit obligation, At trend +1%	$ 379,000
Impact of Accumulated postretirement benefit obligation, At trend +1% (as a percent)	7.40%
Accumulated postretirement benefit obligation, At trend -1%				4,775,000
Impact of Accumulated postretirement benefit obligation, At trend -1%	$ (333,000)
Impact of Accumulated postretirement benefit obligation, At trend -1% (as a percent)	(6.50%)
Service cost plus interest cost, At trend	$ 194,000
Service cost plus interest cost, At Trend +1%	214,000
Impact of Service cost plus interest cost, At trend +1%	20,000
Impact of Service cost plus interest cost, At trend +1% (as a percent)	10.30
Service cost plus interest cost, At Trend -1%	177,000
Impact of Service cost plus interest cost, At trend -1%	$ (17,000)
Impact of Service cost plus interest cost, At trend -1% (as a percent)	(8.80%)
Projected benefit obligations:
Innovative acquisition	$ 5,472,000
Service cost	97,000
Interest cost	97,000
Benefits and settlements paid	(206,000)
Actuarial (gain) loss	(325,000)
Experience Loss	(27,000)
Balance at end of year	5,108,000
Plan net assets:
Company contributions	206,000
Benefits and settlements paid	(206,000)
Funded status of plan
Projected benefit obligation	5,108,000			5,108,000
Under funded status of plan				(5,108,000)
Restricted Cash and Cash Equivalents				5,100,000
Amounts recognized on the consolidated balance sheets
Accrued and current liabilities				381,000
Other Liabilities				4,727,000
Accumulated other comprehensive income / (loss), net of tax				352,000
Amounts recognized in accumulated other comprehensive loss
Net actuarial gain/(loss)				352,000
Accumulated other comprehensive loss, pre-tax				352,000
Accumulated other comprehensive income / (loss), net of tax				$ 352,000
Components of the plan's net periodic pension cost
Service cost	97,000
Interest cost	97,000
Net periodic pension cost	$ 194,000
Medical benefit plan
Health care cost trend rates
Trend rate	5.80%
Ultimate rate	4.50%
Dental benefit plan
Health care cost trend rates
Trend rate	4.00%
Ultimate rate	2.00%

COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Nov. 30, 2007	Dec. 31, 2016	Dec. 31, 2011
Contingency related to spectrum fees
Commitments and contingencies
Spectrum fees paid			$ 2.6
Letter of credit sub-facility
Commitments and contingencies
Outstanding letters of credit		$ 10.6
Drawdowns		$ 0.0
Universal Service Administrative Company
Commitments and contingencies
Commitment fee (as a percent)		1.75%
Lawsuit filed by CTL
Commitments and contingencies
Damages asserted	$ 200.0
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 GTT against Digicel
Commitments and contingencies
Damages asserted		$ 9.0
Punitive damages		5.0
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, 2016 USD ($) ft²	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
COMMITMENTS AND CONTINGENCIES
Area of lease (in square feet) \| ft²	2.7
Obligation for payments under leases
2017	$ 20,908
2018	26,120
2019	16,100
2020	17,090
2021	7,170
Thereafter	15,009
Total obligations under operating leases	102,397
Rent expense
Rent expense	$ 19,800	$ 17,000	$ 15,000

RELATED PARTY TRANSACTIONS (Details)	1 Months Ended	12 Months Ended
RELATED PARTY TRANSACTIONS (Details)	Oct. 31, 2014 USD ($) item	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Related Party Transaction
Rent payments		$ 19,800,000	$ 17,000,000	$ 15,000,000
Cornelius B. Prior Jr \| Tropical Tower
Related Party Transaction
Ownership percentage	90
Rent 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%

SEGMENT REPORTING (Details) $ in Thousands	3 Months Ended								12 Months Ended
SEGMENT REPORTING (Details) $ in Thousands	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) segment	Dec. 31, 2014 USD ($)
Segment reporting
Number of reportable segments \| segment										5
Revenue
Revenue	$ 128,531	$ 138,795	$ 99,991	$ 89,686	$ 82,916	$ 96,782	$ 90,326	$ 85,345	$ 457,003	$ 355,369	$ 336,347
Depreciation and amortization									75,980	56,890	51,234
Non-cash stock-based compensation									6,410	4,975	4,323
Operating income (loss)	9,911	$ 22,081	$ 1,912	$ 15,893	8,181	$ 22,524	$ 28,732	$ 19,158	49,797	78,595	85,576
Segment Assets
Net fixed assets	647,712				373,503				647,712	373,503
Goodwill	62,873				45,077				62,873	45,077
Long Lived Assets	1,198,218				945,004				1,198,218	945,004
Capital Expenditures
Capital expenditures									124,282	64,753	58,300
Wireless
Revenue
Revenue									228,798	237,042	241,690
Wireline
Revenue
Revenue									188,019	86,485	85,284
Equipment and other
Revenue
Revenue									18,578	10,802	9,373
Renewable energy
Revenue
Revenue									21,608	21,040
U.S
Revenue
Revenue									198,300	204,024	180,841
Guyana
Revenue
Revenue									91,653	88,894	86,931
U.S Virgin Islands
Revenue
Revenue									58,431	11,542	11,583
Bermuda
Revenue
Revenue									83,006	45,745	46,917
Other Foreign Countries
Revenue
Revenue									25,613	5,164	10,075
Reconciling Items
Revenue
Depreciation and amortization									6,030	4,948	3,980
Non-cash stock-based compensation									6,274	4,708	4,323
Operating income (loss)									(34,471)	(30,784)	(26,399)
Segment Assets
Net fixed assets	15,429				14,085				15,429	14,085
Long Lived Assets	170,505				315,739				170,505	315,739
Capital Expenditures
Capital expenditures									6,876	4,323
U.S. Telecom
Segment Assets
Goodwill	35,268				39,639				35,268	39,639
U.S. Telecom \| Operating segments
Revenue
Revenue									176,726	182,986	180,391
Depreciation and amortization									24,471	22,239	19,070
Operating income (loss)									49,078	74,459	85,519
Segment Assets
Net fixed assets	129,274				119,596				129,274	119,596
Goodwill	35,269				39,639				35,269	39,639
Long Lived Assets	240,006				227,707				240,006	227,707
Capital Expenditures
Capital expenditures									31,983	37,588
U.S. Telecom \| Operating segments \| Wireless
Revenue
Revenue									148,053	155,390	153,040
U.S. Telecom \| Operating segments \| Wireline
Revenue
Revenue									26,448	25,241	26,155
U.S. Telecom \| Operating segments \| Equipment and other
Revenue
Revenue									2,225	2,355	1,196
International Telecom
Segment Assets
Goodwill	24,326				5,438				24,326	5,438
International Telecom \| Operating segments
Revenue
Revenue									258,276	151,342	155,506
Depreciation and amortization									40,492	24,883	28,079
Non-cash stock-based compensation									22
Operating income (loss)									35,436	28,200	28,674
Segment Assets
Net fixed assets	372,741				133,262				372,741	133,262
Goodwill	24,326				5,438				24,326	5,438
Long Lived Assets	597,454				278,770				597,454	278,770
Capital Expenditures
Capital expenditures									62,808	22,804
International Telecom \| Operating segments \| Wireless
Revenue
Revenue									80,745	81,652	88,650
International Telecom \| Operating segments \| Wireline
Revenue
Revenue									161,571	61,244	59,129
International Telecom \| Operating segments \| Equipment and other
Revenue
Revenue									15,960	8,447	7,728
Renewable energy
Segment Assets
Goodwill	3,279								3,279
Renewable energy \| Operating segments
Revenue
Revenue									22,001	21,040	449
Depreciation and amortization									4,987	4,820	105
Non-cash stock-based compensation									114	267
Operating income (loss)									(246)	6,720	(2,218)
Segment Assets
Net fixed assets	130,268				106,560				130,268	106,560
Goodwill	3,279								3,279
Long Lived Assets	$ 190,253				$ 122,788				190,253	122,788
Capital Expenditures
Capital expenditures									22,615	38
Renewable energy \| Operating segments \| Equipment and other
Revenue
Revenue									393		$ 449
Renewable energy \| Operating segments \| Renewable energy
Revenue
Revenue									$ 21,608	$ 21,040

SEGMENT REPORTING - Revenue and Assets (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue and long lived assets
Revenue	$ 128,531	$ 138,795	$ 99,991	$ 89,686	$ 82,916	$ 96,782	$ 90,326	$ 85,345	$ 457,003	$ 355,369	$ 336,347
Long-Lived Assets	680,461				381,029				680,461	381,029	377,032
U.S
Revenue and long lived assets
Revenue									198,300	204,024	180,841
Long-Lived Assets	265,528				247,169				265,528	247,169	240,341
Guyana
Revenue and long lived assets
Revenue									91,653	88,894	86,931
Long-Lived Assets	132,609				109,829				132,609	109,829	108,738
U.S Virgin Islands
Revenue and long lived assets
Revenue									58,431	11,542	11,583
Long-Lived Assets	110,773				9,621				110,773	9,621	10,027
Bermuda
Revenue and long lived assets
Revenue									83,006	45,745	46,917
Long-Lived Assets	94,976				13,483				94,976	13,483	12,507
Other Foreign Countries
Revenue and long lived assets
Revenue									25,613	5,164	10,075
Long-Lived Assets	$ 76,575				$ 927				$ 76,575	$ 927	$ 5,419

QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								9 Months Ended	12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly financial data
Total revenue	$ 128,531	$ 138,795	$ 99,991	$ 89,686	$ 82,916	$ 96,782	$ 90,326	$ 85,345		$ 457,003	$ 355,369	$ 336,347
Operating expenses	118,620	116,714	98,079	73,793	74,735	74,258	61,594	66,187		407,206	276,774	250,771
Income from operations	9,911	22,081	1,912	15,893	8,181	22,524	28,732	19,158		49,797	78,595	85,576
Other income (expense), net	(2,321)	(785)	(853)	(464)	(418)	(742)	(706)	(20,528)		(4,423)	(22,394)	592
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	7,590	21,296	1,059	15,429	7,763	21,782	28,026	(1,370)		45,374	56,201	86,168
Income taxes	3,982	9,602	2,945	4,631	1,482	10,134	13,008	(487)		21,160	24,137	28,148
INCOME FROM CONTINUING OPERATIONS	3,608	11,694	(1,886)	10,798	6,281	11,648	15,018	(883)		24,214	32,064	58,020
Income from discontinued operations:
Gain on sale of discontinued operations, net of tax					702			389			1,092	1,102
Income from discontinued operations, net of tax					702			390			1,092	1,102
NET INCOME	3,608	11,694	(1,886)	10,798	6,983	11,648	15,018	(493)		24,214	33,156	59,122
Net income attributable to non-controlling interests, net of tax:
Continuing operations	(1,712)	(4,523)	(1,200)	(4,678)	(2,799)	(5,072)	(5,568)	(2,777)
NET INCOME ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS	$ 1,896	$ 7,171	$ (3,086)	$ 6,120	$ 4,184	$ 6,576	$ 9,450	$ (3,270)		$ 12,101	$ 16,940	$ 48,152
NET INCOME PER WEIGHTED AVERAGE BASIC SHARE ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS:
Continuing operations (in dollars per share)	$ 0.12	$ 0.44	$ (0.19)	$ 0.38	$ 0.17	$ 0.41	$ 0.59	$ (0.18)		$ 0.75	$ 0.99	$ 2.96
Discontinued operations:
Discontinued operations (in dollars per share)								0.07
Total discontinued operations (in dollars per share)								0.07			0.07	0.07
Total (in dollars per share)	0.12	0.44	(0.19)	0.38	0.17	0.41	0.59	(0.11)		0.75	1.06	3.03
NET INCOME PER WEIGHTED AVERAGE DILUTED SHARE ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS:
Continuing operations (in dollars per share)	0.12	0.44	(0.19)	0.38	0.16	0.41	0.59	(0.18)		0.75	0.98	2.94
Discontinued operations:
Discontinued operations (in dollars per share)								0.07
Total discontinued operations (in dollars per share)								0.07			0.07	0.07
Total (in dollars per share)	$ 0.12	$ 0.44	$ (0.19)	$ 0.38	$ 0.16	$ 0.41	$ 0.59	$ (0.11)		$ 0.75	$ 1.05	$ 3.01
Additional information:
Reclassification, decrease (increase) to expense	$ (800)				$ 700
Tax basis differences and expense recognition adjustment						$ 700
International Telecom \| Operating Expense
Additional information:
Understatement of expense									$ 300
Renewable energy \| Revenue
Additional information:
Understatement of revenue									$ 500

SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Movement in valuation and qualifying accounts
Balance at Beginning of Year	$ 17,108	$ 25,106	$ 25,317
Purchase Price Accounting	41,941
Charged to Costs and Expenses	5,312	1,305	2,978
Deductions	8,751	9,303	3,189
Balance at End of Year	55,610	17,108	25,106
Valuation allowance on foreign tax credit carryforwards
Movement in valuation and qualifying accounts
Balance at Beginning of Year	4,180	10,577	13,576
Deductions	4,180	6,397	2,999
Balance at End of Year		4,180	10,577
Valuation allowance on foreign net operating losses
Movement in valuation and qualifying accounts
Balance at Beginning of Year	1,672	1,500	1,610
Purchase Price Accounting	41,941
Charged to Costs and Expenses	217	172
Deductions	1,922		110
Balance at End of Year	41,908	1,672	1,500
Valuation allowance on state net operating losses
Movement in valuation and qualifying accounts
Balance at Beginning of Year	1,962	1,687	1,126
Charged to Costs and Expenses		275	561
Deductions	1,409
Balance at End of Year	553	1,962	1,687
Allowance for doubtful accounts
Movement in valuation and qualifying accounts
Balance at Beginning of Year	9,294	11,342	9,005
Charged to Costs and Expenses	5,095	858	2,417
Deductions	1,240	2,906	80
Balance at End of Year	$ 13,149	$ 9,294	$ 11,342