ATN International (ATNI) 10-Q 10 May 22 2022 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2022	May 10, 2022
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2022
Entity File Number	001-12593
Entity Registrant Name	ATN INTERNATIONAL, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	47-0728886
Entity Address, Address Line One	500 Cummings Center
Entity Address, Address Line Two	Suite 2450
Entity Address, City or Town	Beverly
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	01915
City Area Code	978
Local Phone Number	619-1300
Title of 12(b) Security	Common Stock, par value $.01 per share
Trading Symbol	ATNI
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		15,744,687
Entity Central Index Key	0000879585
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents	$ 75,748	$ 79,601
Restricted cash	1,097	1,096
Short-term investments	300	300
Accounts receivable, net of allowances for credit losses of $15.0 million and $13.9 million, respectively	70,109	73,701
Customer receivable	4,336	4,145
Inventory, materials and supplies	9,984	10,177
Prepayments and other current assets	59,267	63,597
Total current assets	220,841	232,617
Fixed Assets:
Property, plant and equipment	1,759,855	1,748,092
Less accumulated depreciation	(825,980)	(804,883)
Net fixed assets	933,875	943,209
Telecommunication licenses, net	113,766	113,766
Goodwill	40,104	40,104
Intangible assets, net	41,067	44,294
Operating lease right-of-use assets	118,091	118,843
Customer receivable - long term	40,206	39,652
Other assets	82,757	76,119
Total assets	1,590,707	1,608,604
Current Liabilities:
Current portion of long-term debt	3,743	4,665
Current portion of customer receivable credit facility	5,280	4,620
Accounts payable and accrued liabilities	113,698	151,463
Dividends payable	2,676	2,672
Accrued taxes	6,680	5,681
Current portion of lease liabilities	16,953	16,201
Advance payments and deposits	35,696	35,642
Total current liabilities	184,726	220,944
Deferred income taxes	21,651	21,460
Lease liabilities, excluding current portion	91,494	91,719
Other liabilities	140,246	142,033
Customer receivable credit facility, net of current portion	36,515	30,148
Long-term debt, excluding current portion	348,463	327,111
Total liabilities	823,095	833,415
Commitments and contingencies (Note 14)
Total redeemable noncontrolling interests	74,052	72,936
ATN International, Inc. Stockholders' Equity:
Preferred stock, $0.01 par value per share; 10,000,000 shares authorized, none issued and outstanding
Common stock, $0.01 par value per share; 50,000,000 shares authorized; 17,562,666 and 17,476,542 shares issued, respectively, 15,742,780 and 15,712,941 shares outstanding, respectively	172	172
Treasury stock, at cost; 1,819,885 and 1,763,601 shares, respectively	(73,795)	(71,714)
Additional paid-in capital	193,164	192,132
Retained earnings	470,056	475,887
Accumulated other comprehensive income	5,195	4,773
Total ATN International, Inc. stockholders' equity	594,792	601,250
Noncontrolling interests	98,768	101,003
Total equity	693,560	702,253
Total liabilities, redeemable noncontrolling interests and equity	1,590,707	1,608,604
Redeemable Preferred Units
Current Liabilities:
Total redeemable noncontrolling interests	51,412	50,296
Redeemable Common Units
Current Liabilities:
Total redeemable noncontrolling interests	$ 22,640	$ 22,640

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
CONDENSED CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowances (in dollars)	$ 15	$ 13.9
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	17,562,666	17,476,542
Common stock, shares outstanding	15,742,780	15,712,941
Treasury stock, shares	1,819,885	1,763,601

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
REVENUE:
Total revenue	$ 172,019	$ 124,510
OPERATING EXPENSES (excluding depreciation and amortization unless otherwise indicated):
Selling, general and administrative	56,343	37,693
Transaction-related charges	554	730
Depreciation and amortization	33,292	20,111
Amortization of intangibles from acquisitions	3,258	397
Loss on disposition of long-lived assets	3,420	117
Total operating expenses	171,911	121,161
Income from operations	108	3,349
OTHER INCOME (EXPENSE)
Interest income	51	(6)
Interest expense	(3,363)	(1,147)
Other income	4,199	2,375
Other income (expense), net	887	1,222
INCOME BEFORE INCOME TAXES	995	4,571
Income tax provision	2,952	295
NET INCOME (LOSS)	(1,957)	4,276
Net income (loss) attributable to noncontrolling interests, net of tax expense (benefit) of $(0.5) million and $0.1 million, respectively.	1,009	(1,570)
NET INCOME (LOSS) ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS	$ (948)	$ 2,706
NET INCOME (LOSS) PER WEIGHTED AVERAGE SHARE ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS:
Basic (in dollars per share)	$ (0.13)	$ 0.17
Diluted (in dollars per share)	$ (0.13)	$ 0.17
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	15,708	15,902
Diluted (in shares)	15,708	15,952
DIVIDENDS PER SHARE APPLICABLE TO COMMON STOCK	$ 0.17	$ 0.17
Communication services
REVENUE:
Total revenue	$ 166,543	$ 110,636
OPERATING EXPENSES (excluding depreciation and amortization unless otherwise indicated):
Cost of services	73,011	49,507
Construction
REVENUE:
Total revenue	1,987	12,306
OPERATING EXPENSES (excluding depreciation and amortization unless otherwise indicated):
Cost of services	2,033	12,606
Other revenue
REVENUE:
Total revenue	$ 3,489	$ 1,568

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Noncontrolling interest income tax expense (benefit)	$ (0.5)	$ 0.1

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income (loss)	$ (1,957)	$ 4,276
Other comprehensive income (loss):
Foreign currency translation adjustment	256	(40)
Unrealized gain (loss) on derivatives	166	31
Other comprehensive income (loss), net of tax	422	(9)
Comprehensive income (loss)	(1,535)	4,267
Less: Comprehensive income (loss) attributable to noncontrolling interests	1,009	(1,570)
Comprehensive income (loss) attributable to ATN International, Inc.	$ (526)	$ 2,697

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Redeemable Preferred Units	Redeemable Common Units	Total ATNI Stockholders' Equity	Common Stock	Treasury Stock, at cost	Additional Paid In Capital	Retained Earnings	Redeemable Common Units.	Accumulated Other Comprehensive Income/(Loss)	Non-Controlling Interests	Total
Balance, beginning of period at Dec. 31, 2020			$ 645,649	$ 172	$ (59,456)	$ 187,754	$ 516,901		$ 278	$ 108,687	$ 754,336
Increase (Decrease) in Stockholders' Equity
Purchase of shares of common stock			(2,221)		(2,221)						(2,221)
Stock-based compensation			1,262			1,262				74	1,336
Dividends declared on common stock			(2,710)				(2,710)				(2,710)
Distributions to non-controlling interests										(1,530)	(1,530)
Repurchase of non-controlling interests			(2,086)			(2,086)				(9,123)	(11,209)
Comprehensive income (loss):
Net income (loss)			2,706				2,706			1,570	4,276
Other comprehensive income (loss)			(9)						(9)		(9)
Comprehensive income (loss)			2,697				2,706		(9)	1,570	4,267
Balance, end of period at Mar. 31, 2021			642,591	172	(61,677)	186,930	516,897		269	99,678	742,269
Beginning balance at Dec. 31, 2021	$ 50,296	$ 22,640									72,936
Increase (decrease) in temporary equity
Accrued dividend - redeemable preferred units	1,116										1,116
Deemed dividend - redeemable common unit		1,092									1,092
Net income (loss)		(1,092)									(1,092)
Total comprehensive income		(1,092)									(1,092)
Ending balance at Mar. 31, 2022	$ 51,412	$ 22,640									74,052
Balance, beginning of period at Dec. 31, 2021			601,250	172	(71,714)	192,132	475,887		4,773	101,003	702,253
Increase (Decrease) in Stockholders' Equity
Purchase of shares of common stock			(2,081)		(2,081)						(2,081)
Stock-based compensation			1,310			1,310				150	1,460
Dividends declared on common stock			(2,675)				(2,675)			(263)	(2,938)
Accrued dividend			(1,116)				(1,116)				(1,116)
Repurchase of non-controlling interests			(278)			(278)				(2,205)	(2,483)
Deemed dividend							(1,092)	$ 1,092
Comprehensive income (loss):
Net income (loss)			(2,040)				(948)	(1,092)		83	(1,957)
Other comprehensive income (loss)			422						422		422
Comprehensive income (loss)			(1,618)				(948)	$ (1,092)	422	83	(1,535)
Balance, end of period at Mar. 31, 2022			$ 594,792	$ 172	$ (73,795)	$ 193,164	$ 470,056		$ 5,195	$ 98,768	$ 693,560

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CONDENSED CONSOLIDATED STATEMENTS OF EQUITY
Purchase of shares of common stock	56,284	43,978
Dividends declared on common stock (dollars per per share)	$ 0.17	$ 0.17

CONDENSED CONSOLIDATED STATEM_6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Cash flows from operating activities:
Net income	$ (1,957)	$ 4,276
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation	33,292	20,111
Amortization of acquisition intangibles	3,258	397
Provision for doubtful accounts	1,913	1,122
Amortization of debt discount and debt issuance costs	501	168
Stock-based compensation	1,461	1,336
Deferred income taxes	191	(2,504)
Gain on equity investments	(4,222)	(2,188)
Loss on disposition of long-lived assets	3,420	117
Unrealized gain on foreign currency		(81)
Changes in operating assets and liabilities, excluding the effects of acquisitions and dispositions:
Accounts receivable	1,677	1,430
Customer receivable	(746)	(12,579)
Materials and supplies, prepayments, and other current assets	(5,330)	(253)
Prepaid income taxes	6,206
Accounts payable and accrued liabilities, advance payments and deposits and other current liabilities	(27,465)	(7,648)
Accrued taxes	2,763	1,810
Other assets	(325)	(242)
Other liabilities	(3,249)	51
Net cash provided by operating activities	11,388	5,323
Cash flows from investing activities:
Capital expenditures	(34,220)	(19,495)
Reimbursable capital expenditures	(248)	(6,185)
Receipt of capital government grants		3,292
Divestiture of businesses, net of transferred cash of $0.9 million		18,597
Purchases of strategic investments		(4,155)
Net cash used in investing activities	(34,468)	(7,946)
Cash flows from financing activities:
Dividends paid on common stock	(2,672)	(2,703)
Distributions to noncontrolling interests	(263)	(3,530)
Payment of debt issuance costs		53
Finance lease payment	(338)
Term loan - repayments	(938)	(938)
Revolving credit facility - borrowings	36,500
Revolving credit facility - repayments	(15,500)
Repayment of customer receivable credit facility	(1,003)
Purchases of common stock - stock- based compensation	(1,136)	(1,677)
Purchases of common stock - share repurchase plan	(941)	(540)
Repurchases of noncontrolling interests	(2,481)	(11,522)
Proceeds from customer receivable credit facility	8,000	10,814
Net cash provided by (used in) financing activities of continuing operations	19,228	(10,043)
Net change in cash, cash equivalents, and restricted cash	(3,852)	(12,666)
Total cash, cash equivalents, and restricted cash, beginning of period	80,697	104,997	$ 104,997
Total cash, cash equivalents, and restricted cash, end of period	76,845	92,331	$ 80,697
Noncash investing activity:
Purchases of property, plant and equipment included in accounts payable and accrued expenses	$ 13,221	$ 10,075

CONDENSED CONSOLIDATED STATEM_7

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) $ in Millions	3 Months Ended
	Mar. 31, 2021USD ($)
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net of transferred cash	$ 0.9

ORGANIZATION AND BUSINESS OPERA

ORGANIZATION AND BUSINESS OPERATIONS	3 Months Ended
	Mar. 31, 2022
ORGANIZATION AND BUSINESS OPERATIONS
ORGANIZATION AND BUSINESS OPERATIONS	1. ORGANIZATION AND BUSINESS OPERATIONS ​ ​ The Company provides critical infrastructure-based communications and related information technology solutions to remote and historically underserved markets in the United States, Bermuda, and the Caribbean. The Company seeks to invest in its existing and new markets for long term growth led by its Glass and Steel and “fiber first” strategies that enable it to bring new or enhanced communications services to markets often overlooked by larger telecommunications providers. ​ At the holding company level, the Company oversees the allocation of capital within and among its subsidiaries, affiliates, new investments, and stockholders. The Company also has developed significant operational expertise and resources that it uses to augment the capabilities of its individual operating subsidiaries in its local markets. Over the past 10 years, the Company has built a platform of resources and expertise to support its operating subsidiaries and to improve their quality of service with greater economies of scale and expertise than would typically be available at the operating subsidiary level. The Company also provides management, technical, financial, regulatory, and marketing services to its operating subsidiaries and typically receives a management fee calculated as a percentage of their revenues, which is eliminated in consolidation. The Company also actively evaluates potential acquisitions, investment opportunities and other strategic transactions, both domestic and international, and generally looks for those that it believes fit the Company’s profile of telecommunications businesses and have the potential to complement its Glass and Steel and “fiber first” approach in markets while generating steady excess cash flows over extended periods of time. The Company uses the cash generated from its operations to re-invest in organic growth in its existing businesses, to make strategic investments in additional businesses, and to return cash to its investors through dividends or stock repurchases. ​ As of March 31, 2022, the Company offered the following types of services to its customers: ​ ● Mobility Telecommunications Services . The Company offers mobile communications services and equipment over our wireless networks to both its business and consumer subscribers. In certain markets, mobility services also includes private network services to business customers and municipalities. ​ ● Fixed Telecommunications Services . The Company provides fixed data and voice telecommunications services to both its business and consumer subscribers in all of its markets. These services include consumer broadband and high speed data solutions for businesses. For some markets, fixed services also include video services and revenue derived from support under certain government programs. ​ ● Carrier Telecommunication Services . The Company delivers services to other telecommunications providers such as wholesale roaming, the leasing of critical network infrastructure such as tower and transport facilities, site maintenance and international long-distance services. ​ ● Managed Services . The Company provides information technology services such as network, application, infrastructure and hosting services to both its business and consumer customers to complement its fixed services in its existing markets. ​ Through March 31, 2022, the Company has identified three operating segments to manage and review its operations and to facilitate investor presentations of its results. These ​ ● International Telecom. In the Company’s international markets, it offers fixed services, mobility services, carrier services and managed services to customers in Bermuda, the Cayman Islands, Guyana and the US Virgin Islands. ​ ● US Telecom. In the United States, the Company offers fixed services, carrier services, and managed services to business and consumer customers in Alaska and the western United States. In the western United States, the Company also provides mobility services and private network services to enterprise and consumer customers. ​ ● Renewable Energy. In India, the Company provided distributed generation solar power to commercial and industrial customers through January 27, 2021. See Disposition of International Solar Business for further details. ​ 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 during the three months ended March 31, 2022: ​ ​ ​ ​ ​ ​ ​ ​ Segment Services Markets Tradenames International Telecom Mobility Services Bermuda, Guyana, US Virgin Islands One, GTT+, Viya ​ ​ Fixed Services Bermuda, Cayman Islands, Guyana, US Virgin Islands One, Logic, GTT, Viya ​ ​ Carrier Services ​ Bermuda, Guyana, US Virgin Islands ​ One, GTT+, Viya ​ ​ Managed Services ​ Bermuda, Cayman Islands, US Virgin Islands, Guyana ​ Fireminds, One, Logic, GTT, Viya US Telecom Mobility Services United States (rural markets) Choice, Choice NTUA Wireless, Geoverse ​ ​ Fixed Services ​ United States Alaska Communications, Commnet, Choice, Choice NTUA Wireless ​ ​ Carrier Services ​ United States ​ Alaska Communications, Commnet, Essextel ​ Managed Services United States Alaska Communications, Choice Renewable Energy (1) ​ Solar ​ India ​ Vibrant Energy ​ (1) See Disposition of International Solar Business for further details. ​ For further information about the Company’s financial segments and geographical information about its operating revenues and assets, see Note 13 to the Unaudited Condensed Consolidated Financial Statements included in this Report. ​ Acquisition of Alaska Communications ​ On July 22, 2021, the Company completed the acquisition of Alaska Communications Systems Group, Inc. (“Alaska Communications”), a publicly listed company, for approximately $339.5 million in cash, net of cash acquired, (the “Alaska Transaction”). Alaska Communications provides broadband telecommunication and managed information technology services to customers in the state of Alaska and beyond using its statewide and interstate telecommunications network. The Company completed the Alaska Transaction to enter a new market with similar characteristics to its existing operations. ​ In conjunction with the Alaska Transaction, the Company entered into an agreement with affiliates and investment funds managed by Freedom 3 Capital, LLC as well as other institutional investors (collectively the “Freedom 3 Investors”). The Freedom 3 Investors contributed approximately $71.5 million in conjunction with the Alaska Transaction (the “Freedom 3 Investment”). The Freedom 3 Investment consists of redeemable common and preferred equity instruments in a subsidiary of the Company which holds the ownership of Alaska Communications. The Company accounted for the Freedom 3 Investment as in its consolidated financial statements because the instruments contain put options allowing the holders to sell the instruments to a subsidiary of the Company. The put option is solely the obligation of the Alaska Communications subsidiary and is nonrecourse to the Company. The Company also entered into a financing transaction drawing $220 million on a new credit facility to complete the Alaska Transaction. As a result of the Alaska Transaction, the Company owns approximately 52% of the common equity of Alaska Communications and controls its operations and management. The Company incurred $11.0 million of transaction costs in conjunction with the Alaska Transaction. Beginning on July 22, 2021, the results of the Alaska Transaction are included in the Company’s US Telecom segment. ​ COVID-19 ​ The Company continues to monitor and assess the effects of the ongoing COVID-19 pandemic on its commercial operations, the safety of its employees and their families, its sales force and customers. ​ The preparation of the condensed consolidated financial statements requires us to make estimates, judgments and assumptions, which are evaluated on an ongoing basis, that may affect the reported amounts of assets, liabilities, equity, revenues and expenses and related disclosure of contingent assets and liabilities. The Company assessed certain accounting matters and estimates that generally require consideration of forecasted financial information in context with the information and estimates reasonably available to the Company and the unknown future impacts of COVID-19 as of March 31, 2022 and through the date of this report. The accounting matters assessed included, but were not limited to, the allowance for credit losses, the carrying value of goodwill and other long-lived assets, financial assets, valuation allowances for tax assets and revenue recognition. ​

BASIS OF PRESENTATION

BASIS OF PRESENTATION	3 Months Ended
	Mar. 31, 2022
BASIS OF PRESENTATION
BASIS OF PRESENTATION	2. BASIS OF PRESENTATION ​ The accompanying condensed consolidated financial statements have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). The financial information included herein is unaudited; however, the Company believes such information and the disclosures herein are adequate to make the information presented not misleading and reflect all adjustments (consisting only of normal recurring adjustments) that are necessary for a fair statement of the Company’s financial position and results of operations for the periods described therein. The year-end condensed balance sheet data was derived from audited financial statements but does not include all disclosures required by accounting principles generally accepted in the United States of America. Results of interim periods may not be indicative of results for the full year. These condensed consolidated financial statements and related notes should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, filed with the SEC on March 16, 2022. ​ The condensed consolidated financial statements include the accounts of the Company, its subsidiaries in which the Company holds controlling interests 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. ​ ​ Presentation of Revenue ​ Effective October 1, 2021, the Company’s statement of operations separately reflects Construction Revenue. All periods presented have been adjusted to conform to these presentation updates. ​ Presentation of Operating Expenses ​ Effective January 1, 2021, the Company changed its presentation of operating expenses in the Condensed Consolidated Statements of Operations by combining the previously disclosed Termination and Access Fees with Engineering and Operations as the newly represented Costs of communication services and other. In addition, the previously disclosed Sales, Marketing and Customer Service expenses are now combined with the previously disclosed General and Administrative expenses within the newly represented Selling, General and Administrative expenses. The change in presentation was made to better align the Company’s results with industry standards. Cost of construction services continues to be broken out separately and all depreciation and amortization continues to be shown separately. ​ Recent Accounting Pronouncements In October 2021, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) ASU 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, which requires entities to apply Topic 606 to recognize and measure contract assets and contract liabilities in a business combination. ASU 2021-08 is effective for fiscal years beginning after December 15, 2022, with early adoption permitted. The Company prospectively adopted this accounting standard in 2021. ​ In November 2021, the FASB issued ASU 2021-10, Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance, which required entities to make specific annual disclosures about transactions with a government. The new standard is effective for fiscal years beginning after December 15, 2021. We are currently evaluating the impact of the standard, but we do not expect it to have a material impact on our disclosures.

REVENUE RECOGNITION AND RECEIVA

REVENUE RECOGNITION AND RECEIVABLES	3 Months Ended
	Mar. 31, 2022
REVENUE RECOGNITION AND RECEIVABLES
REVENUE RECOGNITION AND RECEIVABLES	3. REVENUE RECOGNITION AND RECEIVABLES ​ Contract Assets and Liabilities ​ The Company recognizes contract assets and liabilities on its balance sheet. Contract assets represent unbilled amounts typically resulting from consumer Mobility contracts with both a multiyear service period and a promotional discount. In these contracts the revenue recognized exceeds the amount billed to the customer. The current portion of the contract asset is recorded in prepayments and other current assets and the noncurrent portion is included in other assets on the Company’s balance sheets. ​ Contract liabilities consist of advance payments and billings in excess of revenue recognized. Mobility and Fixed revenue for postpaid customers is generally billed one month in advance and recognized over the period that the corresponding service is rendered to customers. To the extent the service is not provided by the reporting date the amount is recognized as a contract liability. Prepaid service, including Mobility services, sold to customers is recorded as deferred revenue prior to the commencement of services. Contract liabilities are recorded in advanced payments and deposits and other liabilities on the Company’s balance sheets. ​ In July 2019, the Company entered into a Network Build and Maintenance Agreement with AT&T Mobility, LLC (“AT&T”) and subsequently entered into amendments in August 2020 and May 2021 (the “FirstNet Agreement”). In connection with the FirstNet Agreement, the Company is building a portion of AT&T’s network for the First Responder Network Authority in or near the Company’s current operating area in the western United States (the “FirstNet Transaction”). The FirstNet Transaction includes construction and service performance obligations. The Company allocated the transaction price of the FirstNet Agreement to each performance obligation based on the relative standalone selling price of each performance obligation in the contract. The standalone selling price is the estimated price the Company would charge for the good or service in a separate transaction with similar customers in similar circumstances. The current portion receivables under this agreement are recorded in customer receivable and the long-term portion is recorded in customer receivable long-term on the Company’s balance sheet. ​ The Company has certain Carrier Services roaming agreements that contain stand-ready performance obligations and management allocates transaction value to performance obligations based on the standalone selling price. The standalone selling price is the estimated price the Company would charge for the good or service with similar customers in similar circumstances. Management determined the performance obligations were obligations to make the service continuously available and will recognize revenue evenly over the service period. ​ Contract assets and liabilities consisted of the following (amounts in thousands) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 ​ December 31, 2021 ​ ​ $ Change ​ % Change Contract asset – current $ 4,123 ​ $ 4,805 ​ $ (682) ​ (14) % Contract asset – noncurrent ​ 890 ​ ​ 900 ​ ​ (10) ​ (1) % Contract liability – current ​ (23,756) ​ ​ (25,332) ​ ​ 1,576 ​ 6 % Contract liability – noncurrent ​ (78,861) ​ ​ (81,391) ​ ​ 2,530 ​ 3 % Net contract liability $ (97,604) ​ $ (101,018) ​ $ 3,414 ​ 3 % ​ The contract asset – current is included in prepayments and other current assets and the contract asset – noncurrent is included in other assets on the Company’s balance sheet. The contract liability – current is included in advance payments and deposits and the contract liability – noncurrent is included in other liabilities on the Company’s balance sheet. The decrease in the Company’s net contract liability was due to the timing of customer prepayments, contract billings, and recognition of deferred revenue. During the three months ended March 31, 2022, the Company recognized revenue of $15.0 million related to its December 31, 2021 contract liability and amortized $0.7 million of the December 31, 2021 contract asset into revenue. ​ Contract Acquisition Costs ​ The March 31, 2022 balance sheet includes contract acquisition costs of $5.1 million in other assets. During the three months ended March 31, 2022 and 2021, the Company amortized $0.8 million and $0.6 million, respectively, of contract acquisition costs. ​ Remaining Performance Obligations ​ Remaining performance obligations represent the transaction price allocated to unsatisfied performance obligations of certain multiyear Mobility contracts, which include a promotional discount, Managed Services contracts, and the Company’s Carrier Services construction and service contracts. The transaction price allocated to unsatisfied performance obligations was $350 million and $369 million at March 31, 2022 and December 31, 2021, respectively. The Company expects to satisfy approximately 52% of the remaining performance obligations and recognize the transaction price within 24 months and the remainder thereafter. ​ The Company has certain Mobility, Fixed, and Carrier Services contracts where the transaction price is allocated to remaining performance obligations. However, the Company omits these contracts from its disclosure by applying the right to invoice , one year or less, and wholly unsatisfied performance obligation practical expedients. ​ Disaggregation ​ The Company's revenue is presented on a disaggregated basis in Note 13 based on an evaluation of disclosures outside the financial statements, information regularly reviewed by the chief operating decision makers for evaluating the financial performance of operating segments and other information that is used for performance evaluation and resource allocations. This includes revenue from Communication Services, Construction, and Other revenue. Communication Services revenue is further disaggregated into business and consumer Mobility, business and consumer Fixed, Carrier Services, and Other services. Other revenue is further disaggregated into Renewable Energy and, Managed Services revenue. This disaggregation of revenue depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. ​ ​ Receivables ​ The Company records an estimate of future credit losses in conjunction with the revenue transaction based on the information available including historical experience and management’s expectations of future conditions. Those estimates will be updated as additional information becomes available. The Company’s allowance for uncollectible accounts receivable is based on management’s assessment of the collectability of assets pooled together with similar risk characteristics. ​ At March 31, 2022 the Company had gross accounts receivable of $129.7 million and an allowance for credit losses of $15.0 million. The receivable under the FirstNet Agreement totaled $44.5 million of which $4.3 million was current and $40.2 million was long-term. At December 31, 2021, the Company had gross accounts receivable of $131.4 million and an allowance for credit losses of $13.9 million. The receivable under the FirstNet Agreement totaled $43.8 million, of which $4.1 million was current and $39.7 million was long-term. The Company monitors receivables through the use of historical operating data adjusted for expectation of future performance as appropriate. Activity in the allowance for credit losses is below: ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, 2022 ​ Three months ended March 31, 2021 ​ ​ ​ ​ ​ ​ ​ Balance at beginning of period $ 13,885 ​ $ 12,121 Current period provision for expected losses ​ 1,913 ​ ​ 1,122 Write-offs charged against the allowance ​ (862) ​ ​ (354) Recoveries collected ​ ​ 108 ​ ​ 124 Balance at end of period ​ $ 15,044 ​ $ 13,013 ​

LEASES

LEASES	3 Months Ended
	Mar. 31, 2022
LEASES
LEASES	​ ​ 4. LEASES Lessee Disclosure ​ The Company has operating and financing leases for towers, land, corporate offices, retail facilities, and data transport capacity. The lease terms 3 ​ Supplemental lease information ​ The components of lease expense were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, 2022 ​ Three months ended March 31, 2021 Operating lease cost: ​ ​ ​ ​ ​ Operating lease cost $ 6,142 ​ $ 4,225 Short-term lease cost ​ 509 ​ ​ 408 Variable lease cost ​ 804 ​ ​ 1,065 Total operating lease cost $ 7,455 ​ $ 5,698 ​ ​ ​ ​ ​ ​ Finance lease cost: ​ ​ ​ ​ ​ Amortization of right-of-use asset $ 797 ​ $ 574 Variable costs ​ 248 ​ ​ 196 Interest costs ​ 102 ​ ​ - Total finance lease cost $ 1,147 ​ $ 770 ​ During the three month periods ended March 31, 2022 and 2021, the Company paid $5.6 million and $3.5 million, respectively for operating lease liabilities. During the three months ended March 31, 2022, the Company recorded $3.7 million of operating lease liabilities arising from ROU assets. During the three months ended March 31, 2021, the Company recorded $2.2 million of operating lease liabilities arising from ROU assets. ​ At March 31, 2022, finance leases with a cost of $28.1 million and accumulated amortization of $11.1 million were included in property, plant and equipment. During the three months ended March 31, 2022, the Company paid $0.3 million of financing cash flows and $0.1 million of operating cash flows for finance lease liabilities and recorded $0.8 million of additional finance lease liabilities. Additionally, during the three months ended March 31, 2022, the Company disposed of a finance lease with a net book value of $1.0 million recording a loss for that amount. At March 31, 2022, finance leases had a lease liability of ​ At March 31, 2021, finance leases with a cost of $26.5 million and accumulated amortization of $10.1 million were included in property, plant and equipment. During the three months ended March 31, 2021, the Company recorded $1.1 million of additional finance lease liabilities. At March 31, 2021, finance leases had a lease liability of $2.2 million, of which $0.4 million was current. At December 31, 2021, finance leases with a cost of $30.8 million and accumulated amortization of $12.1 million were included in property, plant and equipment. ​ ​ The weighted average remaining lease terms and discount rates as of March 31, 2022 and December 31, 2021 are noted in the table below: ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 ​ December 31, 2021 Weighted-average remaining lease term ​ ​ ​ ​ ​ Operating leases ​ 11.3 years ​ ​ 11.3 years Financing leases ​ 9.6 years ​ ​ 9.5 years ​ ​ ​ ​ ​ ​ Weighted-average discount rate ​ ​ ​ ​ ​ Operating leases ​ 5.2% ​ ​ 5.4% Financing leases ​ 6.2% ​ ​ 6.4% ​ Maturities of lease liabilities as of March 31, 2022 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Financing Leases 2022 (excluding the three months ended March 31, 2022) $ 16,310 ​ $ 1,092 2023 ​ 18,466 ​ ​ 1,463 2024 ​ 16,996 ​ ​ 1,354 2025 ​ 14,156 ​ ​ 1,132 2026 ​ 10,047 ​ ​ 532 Thereafter ​ 68,363 ​ ​ 3,145 Total lease payments ​ 144,338 ​ ​ 8,718 Less imputed interest ​ (42,399) ​ ​ (2,211) Total $ 101,939 ​ $ 6,507 ​ Maturities of lease liabilities as of December 31, 2021 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Financing Leases 2022 $ 20,474 ​ $ 1,269 2023 ​ 17,941 ​ ​ 1,278 2024 ​ 16,634 ​ ​ 1,169 2025 ​ 13,640 ​ ​ 975 2026 ​ 9,610 ​ ​ 484 Thereafter ​ 65,902 ​ ​ 3,145 Total lease payments ​ 144,201 ​ ​ 8,320 Less imputed interest ​ (42,333) ​ ​ (2,268) Total $ 101,868 ​ $ 6,052 ​ As of March 31, 2022, the Company did not have any material operating or finance leases that have not yet commenced. ​ ​ Lessor Disclosure ​ The Company is the lessor in agreements to lease the use of its network assets including its cell sites and buildings. For the three months ended March 31, 2022 the Company recorded $1.0 million of lease income from agreements in which the Company is the lessor. Lease income is classified as Carrier Services revenue in the statement of operations. ​ The following table presents the maturities of future undiscounted lease payments for the periods indicated: ​ ​ ​ ​ 2022 (excluding the three months ended March 31, 2022) $ 4,042 2023 ​ 4,807 2024 ​ 4,406 2025 ​ 4,288 2026 ​ 3,916 Thereafter ​ 10,455 Total future lease payments $ 31,914 ​

USE OF ESTIMATES

USE OF ESTIMATES	3 Months Ended
	Mar. 31, 2022
USE OF ESTIMATES
USE OF ESTIMATES	5. 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 credit losses, 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, assessing the impairment of assets, revenue, and income taxes. Actual results could differ significantly from those estimates. See Note 1 to the Unaudited Condensed Consolidated Financial Statements included in this Report for a discussion of the impact of COVID-19 on the use of these estimates.

ACQUISITIONS AND DISPOSITIONS

ACQUISITIONS AND DISPOSITIONS	3 Months Ended
	Mar. 31, 2022
ACQUISITIONS AND DISPOSITIONS
ACQUISITIONS AND DISPOSITIONS	6. ACQUISITIONS AND DISPOSITIONS ​ US Telecom Acquisition of Alaska Communications ​ On July 22, 2021 (“Closing Date”), the Company completed the acquisition of Alaska Communications pursuant to the terms of the Merger Agreement whereby Alaska Communications became a consolidated subsidiary of the Company. At completion of the Merger, each Alaska Communications common share was converted into the right to receive $3.40 per share in cash representing a total value of $353.3 million of cash and consideration payable, (“Merger Consideration”). The consideration transferred consists of $339.5 million of cash, net of $11.9 million of cash and restricted cash acquired and $1.9 million of accrued consideration representing amounts payable related to stock compensation payable within one year of the close date. The cash consideration was used to purchase $186.8 million of Alaska Communications equity and repay $164.6 million of existing Alaska Communications debt. ​ The Company funded the acquisition with cash on hand, debt, and a contribution from the Freedom 3 Investors. The Company borrowed, through multiple financing transactions, a net of $283 million. On the Closing Date, the lenders advanced to Merger Sub (a) the full $210 million aggregate amount of the Alaska Term Loan (as defined below) in a single borrowing and (b) $10 million of the Alaska Revolving Facility (as defined below). The Company incurred $6.6 million of debt issuance and debt discount costs. Also, to fund the Merger Consideration in part, the Company drew a net $63.0 million under its revolving credit facility under the 2019 CoBank Credit Facility (as defined below). Lastly, the Freedom 3 Investors contributed $71.5 million in conjunction with the Merger. The Company has accounted for the Freedom 3 Investment as redeemable noncontrolling interests in its consolidated financial statements. On the Closing Date, the redeemable noncontrolling interests consisted of $22.6 million of redeemable common units, $48.3 million of redeemable preferred units, and $0.6 million of warrants to purchase common units. The common units contain a put option allowing the holder to sell the common units to a subsidiary of the Company at the then fair market value. The put option begins at the earlier of a future initial public offering of the Alaska Communications operations or July 2028. The redeemable preferred units carry a 9% preferred dividend which compounds quarterly. The preferred units contain a put option allowing the holder to sell the preferred units to a subsidiary of the Company at the unpaid issue price plus unpaid dividends. The put option begins at the earlier of a future initial public offering of the Alaska Communications operations or July 2028. Lastly, the Company issued warrants in the Alaska Communications operations allowing the holders to purchase an additional 3% of the common units at a fixed price. ​ The fair value of the common units remained at $22.6 million at March 31, 2022, unchanged from the value at July 22, 2021. The value of the preferred units was $51.4 million at March 31, 2022 which consists of the original issue price of $48.3 million and $3.1 million of accrued preferred dividends. The value of the warrants was ​ As a result of the Alaska Transaction, the Company owns 52% of the common equity of Alaska Communications and controls its operations and management. ​ The table below represents the allocation of the total consideration transferred to the acquired assets and assumed liabilities based on management’s estimate of their acquisition date fair values (amounts in thousands): ​ ​ ​ ​ Consideration Transferred $ 353,280 Noncontrolling interests ​ 470 Total value to allocate ​ 353,750 Purchase price allocation: ​ ​ Cash and cash equivalents ​ 10,553 Restricted cash ​ 1,326 Short-term investments ​ 434 Accounts receivable ​ 30,453 Inventory, materials and supplies ​ 1,374 Prepayments and other current assets ​ 8,038 Fixed assets ​ 408,694 Telecommunication licenses ​ 683 Intangible assets ​ 44,333 Operating lease right-of-use assets ​ 60,402 Other assets ​ 2,387 Accounts payable and accrued liabilities ​ (39,188) Accrued taxes ​ (3,766) Advance payments and deposits ​ (15,842) Current portion of lease liabilities ​ (2,425) Deferred income taxes ​ (17,040) Lease liabilities, excluding current portion ​ (44,234) Other liabilities ​ (92,432) Net assets acquired $ 353,750 ​ The acquired fixed assets are comprised of telecommunication equipment located in the Alaska and the Western United States. The fixed assets were valued using the income and cost approaches. Cash flows were discounted between 4% and 14% based on the risk associated with the cash flows to determine fair value under the income approach. The fixed assets have useful lives ranging from 2 5 2021 08 ​ The Company’s statement of operations for the three months ended March 31, 2022 includes $58.3 million of revenue and $2.8 million of losses before taxes attributable to the Alaska Transaction, excluding transaction fees. The Company incurred $11.0 million of transaction related charges pertaining to legal, accounting, consulting services, and employee related costs associated with the transaction, of which $0.5 million were incurred during the three months ended March 31, 2022. ​ The following table reflects unaudited pro forma operating results of the Company for the three months ended March 31, 2021 assuming the transaction occurred on January 1, 2020. The unaudited pro forma amounts adjust Alaska Communications’ results to reflect the depreciation and amortization that would have been recorded assuming the fair value adjustments to fixed assets and intangible assets had been applied from January 1, 2020. Additionally, all transaction costs associated with the Alaska Transaction were recorded on January 1, 2020 in the unaudited pro forma results. Lastly, the unaudited pro forma results were adjusted to reflect changes to the acquired entities’ financial structure related to the transaction. Specifically, the pre-Close debt of ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ March 30, 2021 ​ ​ As Reported ​ ​ Pro Forma ​ ​ ​ ​ ​ ​ Revenue $ 124,510 ​ $ 185,178 Net Income attributable to ATN International, Inc. Stockholders $ 2,706 ​ $ 1,034 ​ ​ ​ ​ ​ ​ Earnings Per Share ​ ​ ​ ​ ​ Basic $ 0.17 ​ $ (0.01) Diluted $ 0.17 ​ $ (0.01) ​ ​ The unaudited pro forma adjustments decreased net income attributable to ATN International, Inc. Stockholders by $1.7 million for the three months ended March 31, 2021. The increase was due to an increase from the net income of the Alaska Communications operations excluding transaction costs offset by increased acquisition related depreciation and amortization expenses. ​ The unaudited pro forma data is presented for illustrative purposes only and is not necessarily indicative of the operating results 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. ​ ​ Renewable Energy ​ Disposition of International Solar Business ​ In January 2021, the Company completed the sale of 67% of the outstanding equity in its business that owns and operates distributed generation solar power projects operated under the Vibrant name in India (the “Vibrant Transaction”). The post-sale results of the Company’s ownership interest in Vibrant are recorded through the equity method of accounting within the Corporate and Other operating segment. As such, the Company’s consolidated financial statements do not include revenue and operating expenses from Vibrant, but instead, “other income (expense)” within the Corporate and Other operating segment includes the Company’s share of Vibrant’s profits or losses. The Company will continue to present the historical results of its Renewable Energy segment for comparative purposes. ​ The table below identifies the assets and liabilities transferred (in thousands): ​ ​ ​ ​ Consideration Received $ 35,218 Assets and liabilities disposed ​ ​ Current assets ​ 4,899 Property, plant and equipment ​ 45,891 Other assets ​ 439 Current liabilities ​ (759) Net assets disposed $ 50,470 ​ ​ ​ Consideration less net assets disposed ​ (15,252) ​ ​ ​ Foreign currency losses reclassified from accumulated other comprehensive income ​ (6,258) ​ ​ ​ Loss on sale ​ (21,510) Transaction costs ​ (1,283) Loss on sale including transaction costs $ (22,793) ​ The Company reported a loss on sale of $21.5 million during the year ended December 31, 2020 due to the Vibrant Transaction. The Company recorded transaction costs of $1.3 million on the Vibrant Transaction, of which $0.7 million was recorded during the year ended December 31, 2020 and $0.6 million was recorded during the year ended December 31, 2021. The consideration received includes $19.5 million of cash and $3.9 million of receivables related to the amounts held in escrow and earn out consideration. The Company has recorded $11.8 million pursuant to an equity method investment with respect to its remaining 33% ownership interest in Vibrant. The Company is assessing earn out and escrow amounts which will be finalized in 2023. During the year ended December 31, 2021, the Company recorded additional losses of $1.6 million related to the ongoing working capital, escrow, and contingent consideration assessment. The Company has 24 months after the close of the transaction to satisfy the conditions necessary to receive the earn-out consideration. ​ The Vibrant Transaction does not qualify as discontinued operations because the disposition was not a strategic shift which will have a major effect on the Company’s operations, and as a result, the historical results and financial position of the operations are presented within continuing operations.

FAIR VALUE MEASUREMENTS AND INV

FAIR VALUE MEASUREMENTS AND INVESTMENTS	3 Months Ended
	Mar. 31, 2022
FAIR VALUE MEASUREMENTS AND INVESTMENTS
FAIR VALUE MEASUREMENTS AND INVESTMENTS	7. FAIR VALUE MEASUREMENTS AND INVESTMENTS ​ 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 March 31, 2022 and December 31, 2021 are summarized as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 ​ ​ Significant Other ​ ​ Quoted Prices in ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Active Markets ​ Inputs ​ Inputs ​ ​ ​ Description ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ Total Money market funds ​ $ 3,164 ​ $ — ​ $ — ​ $ 3,164 Short term investments ​ ​ 300 ​ ​ — ​ ​ — ​ ​ 300 Other investments ​ ​ — ​ ​ — ​ ​ 2,024 ​ ​ 2,024 Alaska Communications redeemable common units ​ ​ — ​ ​ — ​ ​ (22,640) ​ ​ (22,640) Warrants on Alaska Communications redeemable common units ​ ​ — ​ ​ — ​ ​ (559) ​ ​ (559) Interest rate swap ​ ​ — ​ ​ (279) ​ ​ — ​ ​ (279) Total assets and liabilities measured at fair value ​ $ 3,464 ​ $ (279) ​ $ (21,175) ​ $ (17,990) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2021 ​ Significant Other ​ ​ Quoted Prices in ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Active Markets ​ Inputs ​ Inputs ​ ​ ​ Description ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ Total Money market funds ​ $ 3,301 ​ $ — ​ $ — ​ $ 3,301 Short term investments ​ ​ 300 ​ ​ — ​ ​ — ​ ​ 300 Other investments ​ ​ — ​ ​ — ​ ​ 1,925 ​ ​ 1,925 Alaska Communications redeemable common units ​ ​ — ​ ​ — ​ ​ (22,640) ​ ​ (22,640) Warrants on Alaska Communications redeemable common units ​ ​ — ​ ​ — ​ ​ (559) ​ ​ (559) Interest rate swap ​ ​ — ​ ​ (894) ​ ​ — ​ ​ (894) Total assets and liabilities measured at fair value ​ $ 3,601 ​ $ (894) ​ $ (21,274) ​ $ (18,567) ​ During the three months ended March 31, 2022, the fair value of the remaining Level 3 investments increased $0.1 million due to income recognized in the other income line of the Company’s statement of operations. ​ Certificate of Deposit ​ As of March 31, 2022 and December 31, 2021 this asset class consisted of a time deposit at a financial institution denominated in US 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 March 31, 2022 and December 31, 2021, this asset class consisted of a money market portfolio that comprises Federal government and US 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. ​ ​ Other Investments ​ In 2019, the Company made a $14.4 million investment in a renewable energy partnership as a tax equity investor. In 2020, the Company received an investment tax credit of $12.0 million from its investment and will receive future cash distributions from the partnership’s operations. The Company elected the deferral method to account for the credit and elected the fair value option to account for the equity investment. The Company’s investment had a fair value of $2.0 million at March 31, 2022, and $1.9 million at December 31, 2021. The asset is classified within Level 3 of the fair value hierarchy. The Company used the income approach to fair value the investment and the inputs consisted of a discount rate and future cash flows calculated based on the investment attributes. ​ Also in 2019, the Company made an investment in an early-stage venture through the acquisition of a convertible debt instrument. The instrument converted into equity during the first quarter of 2021. Upon conversion the Company accounted for the investment under the cost method of accounting as the investment does not have a readily determinable fair value. Prior to conversion, the Company accounted for the investment under the fair value option using Level 3 inputs. The book value of the investment remained unchanged at $16.5 million at March 31, 2022 and December 31, 2021. The Company also holds investments in equity securities consisting of noncontrolling investments in privately held companies. These investments, over which the Company does not have the ability to exercise significant influence, are without readily determinable fair values. The investments are measured at cost, less any impairment, adjusted for observable price changes of similar investments of the same issuer. Fair value is not estimated for these investments if there are no identified events or changes in circumstances that may have an effect on the fair value of the investment. The carrying value of the investment was $6.1 million and $1.3 million at March 31, 2022 and December 31, 2021, respectively. This increase of million is due to a gain recognized from an observable price change in the security during the three months ended March 31, 2022. These investments are included with other assets on the consolidated balance sheets. Equity Method Investments In the first quarter of 2020, the Company increased its ownership in one investment of a privately held company to approximately 24% of the outstanding voting equity through an additional $2.8 million investment. With this investment the Company obtained the ability to exercise significant influence over the investee and began accounting for the investment under the equity method of accounting including the recording of its share of the investee’s earnings or losses. The carrying value of the investment was million at March 31, 2022 and December 31, 2021, respectively. The value remained unchanged from the December 31, 2021 balance due to million. The investment is included with other assets on the consolidated balance sheets. In the first quarter of 2021, the Company began to account for its former India solar operations under the equity method of accounting. Subsequent to the close of the Vibrant Transaction in January 2021, the value of the investment decreased from $13.9 million at December 31, 2021 to $13.4 million at March 31, 2022. The decrease of $0.5 million was due to currency losses of $0.2 million and operating losses of $0.3 million. ​ Redeemable Common Units and Warrants ​ The Company issued redeemable common units, and warrants to purchase additional common units, in a subsidiary of the Company in conjunction with its acquisition of Alaska Communications. (Refer to Note 5). The instruments are redeemable at the option of the holder. Both the common units and warrants to purchase common units are recorded at fair value in the Company’s financial statements. The common units are recorded in redeemable noncontrolling interest and the warrants are recorded in other liabilities on the Company’s balance sheets. The Company calculates the fair value of the instruments using a market approach with Level 3 inputs. ​ ​ Other Fair Value Disclosures ​ The carrying amounts of cash and cash equivalents, accounts receivable, and accounts payable and accrued expenses approximate their fair values because of the relatively short-term maturities of these financial instruments. The fair value of the interest rate swap is measured using Level 2 inputs. ​ The fair value of long-term debt is estimated using Level 2 inputs. At March 31, 2022, the fair value of long-term debt, including the current portion, was $400.8 million and its book value was $394.0 million. At December 31, 2021, the fair value of long-term debt, including the current portion, was $373.7 million and its book value was $366.5 million.

LONG-TERM DEBT

LONG-TERM DEBT	3 Months Ended
	Mar. 31, 2022
LONG-TERM DEBT
LONG-TERM DEBT	8. LONG-TERM DEBT ​ On April 10, 2019, the Company entered into a credit facility, with CoBank, ACB and a syndicate of other lenders (the “2019 CoBank Credit Facility”). The 2019 CoBank Credit Facility provides for a $200 million revolving credit facility that includes (i) up to $75 million for standby or trade letters of credit and (ii) up to $10 million under a swingline sub-facility. Approximately $18.0 million of performance letters of credit have been issued and remain outstanding and undrawn as of March 31, 2022. The 2019 CoBank Credit Facility matures on April 10, 2024. ​ Amounts borrowed under the 2019 CoBank Credit Facility bear interest at a rate equal to, at the Company’s option, either (i) the London Interbank Offered Rate (“LIBOR”) plus an applicable margin ranging between 1.25% to 2.25% or (ii) a base rate plus an applicable margin ranging from 0.25% to 1.25%. Swingline loans 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) LIBOR for an interest period of one month and (y) LIBOR for an interest period of one week; (ii) the Federal Funds Effective Rate (as defined in the 2019 CoBank Credit Facility) plus 0.50% per annum; and (iii) the Prime Rate (as defined in the 2019 CoBank Credit Facility). The applicable margin is determined based on the Total Net Leverage Ratio (as defined in the 2019 CoBank Credit Facility). Under the terms of the 2019 CoBank Credit Facility, the Company must also pay a fee ranging from 0.150% to 0.375% of the average daily unused portion of the 2019 CoBank Credit Facility over each calendar quarter. The 2019 CoBank Credit Facility contains customary representations, warranties and covenants, including a financial covenant that imposes a maximum ratio of indebtedness to EBITDA as well as covenants limiting additional indebtedness, liens, guaranties, mergers and consolidations, substantial asset sales, investments and loans, sale and leasebacks, transactions with affiliates and fundamental changes. The Company’s investments in “unrestricted” subsidiaries and certain dividend payments to its stockholders are not limited unless the Total Net Leverage Ratio is equal to or greater than 1.75 to 1.0. The Total Net Leverage Ratio is measured each fiscal quarter and is required to be less than or equal to 2.75 to 1.0. In the event of a Qualifying Acquisition (as defined in the 2019 CoBank Credit Facility), the Total Net Leverage Ratio increases to 3.25 to 1.0 for the subsequent three fiscal quarters. ​ The 2019 CoBank Credit Facility also provides for the incurrence by the Company of incremental term loan facilities, when combined with increases to revolving loan commitments, in an aggregate amount not to exceed $200 million (the “Accordion”). Amounts borrowed under the Accordion are also subject to proforma compliance with a net leverage ratio financial covenant. ​ As of March 31, 2022, the Company was in compliance with all of the financial covenants, had $71.5 million outstanding in borrowings and, net of the $18.0 million of outstanding performance letters of credit, had $110.5 million of availability under the 2019 CoBank Credit Facility. ​ Alaska Credit Facility On July 22, 2021, Alaska Communications entered into a Credit Agreement (the “Alaska Credit Facility”) with Fifth Third Bank, National Association, as Administrative Agent, and a syndicate of lenders to provide a $35.0 million revolving facility (the “Alaska Revolving Facility”) and a $210.0 million initial term loan facility (the “Alaska Term Loan”). As of March 31, 2022, million was outstanding under the Alaska Revolving Facility. Both facilities mature on July 22, 2026. The Company capitalized $6.6 million of fees associated with the Alaska Credit Facility which are being amortized over the life of the debt and $5.6 million were unamortized at March 31, 2022. The Alaska Credit Facility also provides for incremental term loans up to an aggregate principal amount of the greater of $70.0 million and Alaska Communications’ trailing twelve month Consolidated EBITDA (as defined in the Alaska Credit Facility). ​ The key terms and conditions of the Alaska Credit Facility include the following: ​ ● Amounts outstanding bear an interest rate of LIBOR, or a LIBOR replacement rate as applicable, plus a margin ranging from 3.00% to 4.00% based on Alaska Communications’ Consolidated Total Net Leverage Ratio (as defined in the Credit Agreement) or an alternate base rate may be selected at a margin that is 1% lower than the counterpart LIBOR margin; ​ ● Principal repayments are due quarterly commencing in the fourth quarter of 2023 in quarterly amounts as follows: from the fourth quarter of 2023 through the third quarter of 2024, $1.3 million; and from the fourth quarter of 2024 through the third quarter of 2026, $2.6 million. The remaining unpaid balance is due on the final maturity date; ● Alaska Communications is required to maintain financial ratios subsequent to the closing of the Alaska Transaction, as defined in the Alaska Credit Facility, including (a) a maximum Consolidated Net Total Leverage Ratio of 4.00 to 1, stepping down to 3.75 to 1 beginning with the second quarter of 2024; and (b) a minimum Consolidated Fixed Charge Coverage Ratio of not less than 1.25 to 1; and ● The Alaska Credit Facility is non-recourse to the Company and is secured by substantially all of the personal property and certain material real property owned by Alaska Communications. Alaska Communication entered into an amortizing interest rate swap that has been designated as a cash flow hedge that has an interest rate of 1.6735% and expires on June 30, 2022. As of March 31, 2022, the swap had an unamortized notional amount of $119.8 million. ​ FirstNet Receivables Credit Facility ​ On March 26, 2020, Commnet Finance, a wholly owned subsidiary of Commnet Wireless, entered into a receivables credit facility with the Company, Commnet Wireless, and CoBank, ACB (the “Receivables Credit Facility”). The Receivables Credit Facility provides for a senior secured delayed draw term loan in an aggregate principal amount of up to $75.0 million and the proceeds may be used to acquire certain receivables from Commnet Wireless. The receivables to be financed and sold under the Receivables Credit Facility, which provide the loan security, relate to the obligations of AT&T under the FirstNet Agreement. On December 29, 2021, CoBank amended the Receivables Credit Facility and extended the delayed draw period to December 31, 2022. ​ The maturity date for each loan will be set by CoBank and will match the weighted average maturity of the certain receivables financed. ​ Interest on the loans accrues at a fixed annual interest rate to be quoted by CoBank. The Receivables Credit Facility contains customary events of termination, representations and warranties, affirmative and negative covenants and events of default customary for facilities of this type. As of March 31, 2022, the Company had $42.5 million outstanding, of which $5.3 million was current, and $29.7 million of availability under the Receivables Credit Facility. The Company capitalized Viya Debt ​ The Company, and certain of its subsidiaries, have entered into a $60.0 million loan agreement (the “Viya Debt”) with Rural Telephone Finance Cooperative (“RTFC”). The Viya Debt agreement contains customary representations, warranties and affirmative and negative covenants (including limitations on additional debt, guaranties, sale of assets and liens) and a financial covenant that limits the maximum ratio of indebtedness to annual operating cash flow to 3.5 to 1.0 (the “Net Leverage Ratio”). This covenant is tested on an annual basis at the end of each fiscal year. Interest is paid quarterly at a fixed rate of 4.0% per annum and principal repayment is not required until maturity on July 1, 2026. Prepayment of the Viya Debt may be subject to a fee under certain circumstances. The debt is secured by certain assets of our Viya subsidiaries and is guaranteed by us. With RTFC’s consent, the Company funded the restoration of Viya’s network, following Hurricanes Irma and Maria in 2017, through an intercompany loan arrangement in the amount of $51.6 million. ​ The Company paid a fee of $0.9 million in 2016 to lock the interest rate at 4% per annum over the term of the Viya Debt. The fee was recorded as a reduction to the Viya Debt carrying amount and is being amortized over the life of the loan. ​ As of March 31, 2022, $60.0 million of the Viya Debt remained outstanding and $0.4 million of the rate lock fee was unamortized. ​ On May 5, 2022, RTFC agreed to amend the Net Leverage Ratio to 7.0 to 1.0 through the maturity date of July 1, 2026. This covenant will be tested on December 31, 2022. ​ One Communications Debt ​ The Company has an outstanding loan from HSBC Bank Bermuda Limited (the “One Communications Debt”) which is scheduled to mature on May 22, 2022 and bears interest at the one-month LIBOR plus a margin ranging between 2.5% to 2.75% per annum paid quarterly. ​ The One Communications Debt contains customary representations, warranties and affirmative and negative covenants (including limitations on additional debt, guaranties, sale of assets and liens) and financial covenants, tested annually as of and for the twelve months ended December 31st, that limit the ratio of tangible net worth to long term debt and total net debt to EBITDA and require a minimum debt service coverage ratio (as defined in the One Communications Debt agreement). The Company entered into an amortizing interest rate swap that has been designated as a cash flow hedge, which has an original notional amount of $11.0 million, an interest rate of 1.874%, and expires in May 2022. As of March 31, 2022, the swap had an unamortized notional amount of $3.8 million. As of March 31, 2022, $3.8 million of the One Communications Debt was outstanding. ​

GOVERNMENT SUPPORT AND SPECTRUM

GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS	3 Months Ended
	Mar. 31, 2022
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS	9. GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS ​ Universal Service Fund and Connect America Fund Phase II Programs ​ The Company recognizes revenue from several government funded programs including the Universal Service Fund (“USF”), a subsidy program managed by the Federal Communications Commission (“FCC”), and the Alaska Universal Service Fund (“AUSF”), a similar program managed by the Regulatory Commission of Alaska (the “RCA”). USF funds are disbursed to telecommunication providers through four programs: the High Cost Program; the Low Income Program (“Lifeline Program”); the Schools and Libraries Program (“E-Rate Program”); and the Rural Health Care Support Program. ​ The Company also recognizes revenue from the Connect America Fund Phase II program (“CAF II”) which offers subsidies to carriers to expand broadband coverage in designated areas. Under CAF II, the Company’s US Telecom segment will receive an aggregate of $27.7 million annually through December 2025 and an aggregate of $8.0 million annually from January 2026 through July 2028. ​ Both the USF and CAFII programs are subject to certain operational and reporting compliance requirements. The Company believes it is in compliance with these requirements as of March 31, 2022. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ March 31, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ US Telecom ​ International Telecom ​ Total ​ ​ ​ ​ ​ ​ ​ ​ ​ High cost support $ 1,056 ​ $ 2,761 ​ $ 3,817 CAF II ​ 6,822 ​ ​ — ​ ​ 6,822 Other Programs ​ 5,554 ​ ​ — ​ ​ 5,554 Total $ 13,432 ​ $ 2,761 ​ $ 16,193 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ US Telecom ​ International Telecom ​ Total ​ ​ ​ ​ ​ ​ ​ ​ ​ High cost support $ 311 ​ $ 4,090 ​ $ 4,401 CAF II ​ 1,899 ​ ​ — ​ ​ 1,899 Other Programs ​ 2,132 ​ ​ — ​ ​ 2,132 Total $ 4,342 ​ $ 4,090 ​ $ 8,432 ​ In 2018, the FCC initiated a proceeding to replace the High Cost Program support received by Viya in the US Virgin Islands with a new Connect USVI Fund. On November 16, 2020, the FCC announced that Viya was not the recipient of the Connect USVI Fund award and authorized funding to be issued to the new awardee in June 2021. Pursuant to the terms of the program and effective in July 2021, Viya’s annual USF support was reduced from $16.4 million to $10.9 million. In July 2022, this support will be reduced again to $5.5 million for the annual period through June 2023. Thereafter, Viya will not receive High Cost Program support. ​ RDOF (“Rural Digital Opportunities Fund”) ​ ​ Construction Grants ​ grants in the three months ended March 31, 2022. Of this $28.3 million of awards, the Company has completed its construction obligations on $15.0 million of these projects and $11.2 million of such construction obligations remain with completion deadlines beginning in July 2022. Once these projects are constructed, the Company is obligated to provide service to the participants. The Company expects to meet all requirements associated with these grants. ​ CARES Act ​ ​ CBRS Auction ​ During the third quarter of 2020, the Company participated in the FCC’s Citizens Broadband Radio Service (CBRS) auction for Priority Access Licenses (PALs) in the 3.5 GHz spectrum band. These PALs are licensed on a county-by-county basis and are awarded for a 10-year renewable term. The Company was a winning bidder for PALs located strategically throughout the United States at a total cost of approximately $20.4 million. In connection with the awarded licenses, the Company will have to achieve certain CBRS spectrum build out obligations. The Company currently expects to comply with all applicable requirements related to these licenses.

RETIREMENT PLANS

RETIREMENT PLANS	3 Months Ended
	Mar. 31, 2022
RETIREMENT PLANS
RETIREMENT PLANS	​ 10. RETIREMENT PLANS ​ Multi-employer Defined Benefit Plan Pension benefits for substantially all of the Company’s Alaska-based employees are provided through the Alaska Electrical Pension Fund (“AEPF”). The Company pays a contractual hourly amount based on employee classification or base compensation to the AEPF. As a multi-employer defined benefit plan, the accumulated benefits and plan assets are not determined for, or allocated separately to, the individual employer. This plan was not in endangered or critical status during the plan year. Defined Benefit Plan The Company has noncontributory defined benefit pension and noncontributory defined medical, dental, vision, and life benefit plans for eligible employees in its International Telecom segment who meet certain eligibility criteria. As part of the Alaska Transaction, the Company acquired a defined benefit pension plan and a post-retirement medical plan covering certain employees. The pension plan had a projected benefit obligation of $15.4 million and plan assets of $12.1 million on July 22, 2021. The post-retirement medical plan is unfunded and had a projected benefit obligation of $0.4 million on July 22, 2021. The Company recorded the net periodic benefit cost identified below (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ March 31, 2022 March 31, 2021 ​ Pension benefits ​ Postretirement benefits ​ Pension benefits ​ Postretirement benefits Operating expense ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Service cost $ 57 ​ $ 36 ​ $ 54 ​ $ 35 Non-operating expense ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest cost ​ 565 ​ ​ 33 ​ ​ 572 ​ ​ 41 Expected return on plan assets (925) ​ — ​ ​ (687) ​ — Actuarial (gain)/ loss ​ — ​ ​ — ​ ​ — ​ ​ — Net periodic pension expense (benefit) $ (303) ​ $ 69 ​ $ (61) ​ $ 76 ​ The Company was not required to make contributions to its pension plans during the three months ended March 31, 2022 and 2021. However, the Company periodically evaluates whether to make discretionary contributions. The Company funds its postretirement benefit plans as claims are made and did not make contributions to its pension plans during the three months ended March 31, 2022 and 2021.

INCOME TAXES

INCOME TAXES	3 Months Ended
	Mar. 31, 2022
INCOME TAXES
INCOME TAXES	11. INCOME TAXES ​ The Company’s effective tax rate for the three months ended March 31, 2022 and 2021 was 296.7% and 6.5%, respectively. ​ The Company recorded an income tax provision of $3.0 million in relation to income before taxes of $1.0 million for the three months ended March 31, 2022. The effective tax rate for the three months ended March 31, 2022 was primarily impacted by the following items: (i) a ​ The effective tax rate for the three months ended March 31, 2021 was primarily impacted by the following items: (i) the mix of income generated among the jurisdictions in which the Company operates and (ii) a discrete expense of $0.5 million for interest on unrecognized tax positions. ​ The Company’s effective tax rate is based upon estimated income before provision for income taxes for the year, composition of the income in different countries, and adjustments, if any, in the applicable quarterly periods for potential tax consequences, benefits and/or resolutions of tax contingencies. The Company’s consolidated tax rate will continue to be impacted by any transactional or one-time items in the future and the mix of income in any given year generated among the jurisdictions in which the Company operates. While the Company believes it has adequately provided for all tax positions, amounts asserted by taxing authorities could materially differ from the Company’s accrued positions as a result of uncertain and complex application of tax law and regulations. Additionally, the recognition and measurement of certain tax benefits include estimates and judgment by management. Accordingly, the Company could record additional provisions or benefits for US federal, state, and foreign tax matters in future periods as new information becomes available. ​

EARNINGS PER SHARE AND REDEEMAB

EARNINGS PER SHARE AND REDEEMABLE NONCONTROLLING INTERESTS	3 Months Ended
	Mar. 31, 2022
EARNINGS PER SHARE AND REDEEMABLE NONCONTROLLING INTERESTS
EARNINGS PER SHARE AND REDEEMABLE NONCONTROLLING INTERESTS	​ 12. EARNINGS PER SHARE AND REDEEMABLE NONCONTROLLING INTERESTS ​ Earnings Per Share ​ The following table reconciles the numerator and denominator in the computations of basic and diluted earnings per share (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ 2022 ​ 2021 Numerator: ​ ​ ​ ​ ​ Net loss attributable to ATN International, Inc. stockholders ​ (948) ​ ​ 2,706 Less: Preferred dividends ​ (1,116) ​ ​ — Net loss attributable to ATN International, Inc. common stockholders $ (2,064) ​ $ 2,706 ​ ​ ​ ​ ​ ​ Denominator: ​ ​ ​ ​ ​ Weighted-average shares outstanding- Basic ​ 15,708 ​ ​ 15,902 Effective of dilutive securities: ​ ​ ​ ​ ​ Stock options, restricted stock units and performance stock units ​ — ​ ​ 50 Weighted-average shares outstanding- Diluted ​ 15,708 ​ ​ 15,952 ​ For each of the three months ended March 31, 2022 and 2021, the calculations of basic and diluted weighted average shares of common stock outstanding do not include 5,000 shares relating to stock options as the effects of those options were anti-dilutive. ​ Redeemable Noncontrolling Interests ​ In connection with the Alaska Transaction, the Company has accounted for the Freedom 3 Investment as redeemable noncontrolling interests in its consolidated financial statements. The redeemable noncontrolling interests consist of $22.6 million of redeemable common units and $48.3 million of redeemable preferred units. The common units contain a put option allowing the holder to sell the common units to a subsidiary of the Company at the then fair market value. The put option is solely the obligation of Alaska Communications and is nonrecourse to the Company. The put option begins at the earlier of a future initial public offering of the Alaska Communications operations or July 2028. The fair value of the common units remained at million at March 31, 2022, unchanged from the value at July 22, 2021. The redeemable preferred equity carries a preferred dividend which compounds quarterly. The preferred units contain a put option allowing the holder to sell the preferred units to a subsidiary of the Company at the unpaid issue price plus unpaid dividends. The put option is solely the obligation of the Alaska Communications and is nonrecourse to the Company. The put option begins at the earlier of a future initial public offering of the Alaska Communications operations or July 2028. The unpaid preferred dividend was ​ For the three months ended March 31, 2022, the Company allocated losses of $1.1 million to the redeemable common units representing their proportionate share of operating losses. Additionally, the fair value of the redeemable common units increased by ​ The following table provides a roll forward of the activity related to the Company’s redeemable noncontrolling interests for the three months ended March 31, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Redeemable Preferred Units ​ Redeemable Common Units ​ Total Redeemable Noncontrolling Interests Balance, December 31, 2021 $ 50,296 ​ $ 22,640 ​ $ 72,936 Accrued preferred dividend ​ 1,116 ​ ​ — ​ ​ 1,116 Allocated net loss ​ — ​ ​ (1,092) ​ ​ (1,092) Change in fair value ​ — ​ ​ 1,092 ​ ​ 1,092 Balance, March 31, 2022 $ 51,412 ​ $ 22,640 ​ $ 74,052 ​

SEGMENT REPORTING

SEGMENT REPORTING	3 Months Ended
	Mar. 31, 2022
SEGMENT REPORTING
SEGMENT REPORTING	13. SEGMENT REPORTING ​ The Company has the following three reportable and operating segments: i) International Telecom, ii) US Telecom, and iii) Renewable Energy. ​ The following tables provide information for each operating segment (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended March 31, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Communication Services ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mobility - Business ​ $ 3,616 ​ $ 374 ​ $ — ​ $ — ​ $ 3,990 Mobility - Consumer ​ ​ 19,970 ​ ​ 1,456 ​ ​ — ​ ​ — ​ ​ 21,426 Total Mobility ​ ​ 23,586 ​ ​ 1,830 ​ ​ — ​ ​ — ​ ​ 25,416 Fixed - Business ​ ​ 17,254 ​ ​ 27,145 ​ ​ — ​ ​ — ​ ​ 44,399 Fixed - Consumer ​ ​ 41,093 ​ ​ 18,968 ​ ​ — ​ ​ — ​ ​ 60,061 Total Fixed ​ ​ 58,347 ​ 46,113 ​ — ​ — ​ 104,460 Carrier Services ​ ​ 3,402 ​ ​ 32,989 ​ ​ — ​ ​ — ​ ​ 36,391 Other ​ 276 ​ ​ — ​ ​ — ​ ​ — ​ ​ 276 Total Communication Services Revenue ​ 85,611 ​ ​ 80,932 ​ ​ — ​ ​ — ​ ​ 166,543 Construction ​ ​ — ​ ​ 1,987 ​ ​ — ​ ​ — ​ ​ 1,987 Other ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Managed Services ​ ​ 1,176 ​ ​ 2,313 ​ ​ — ​ ​ — ​ ​ 3,489 Total Other Revenue ​ ​ 1,176 ​ ​ 2,313 ​ ​ — ​ ​ — ​ ​ 3,489 Total Revenue ​ ​ 86,787 ​ ​ 85,232 ​ ​ — ​ ​ — ​ ​ 172,019 Depreciation ​ 13,897 ​ 18,442 ​ — ​ 953 ​ 33,292 Amortization of intangibles from acquisitions ​ ​ 418 ​ ​ 2,840 ​ ​ — ​ ​ — ​ ​ 3,258 Non-cash stock-based compensation ​ 60 ​ 90 ​ — ​ 1,311 ​ 1,461 Operating income (loss) ​ 11,803 ​ (4,635) ​ (23) ​ (7,037) ​ 108 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Communication Services ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mobility - Business ​ $ 1,197 ​ $ 576 ​ $ — ​ $ — ​ $ 1,773 Mobility - Consumer ​ ​ 20,624 ​ ​ 2,284 ​ ​ — ​ ​ — ​ ​ 22,908 Total Mobility ​ ​ 21,821 ​ ​ 2,860 ​ ​ — ​ ​ — ​ ​ 24,681 Fixed - Business ​ ​ 16,634 ​ ​ 2,696 ​ ​ — ​ ​ — ​ ​ 19,330 Fixed - Consumer ​ ​ 42,114 ​ ​ 3,674 ​ ​ — ​ ​ — ​ ​ 45,788 Total Fixed ​ ​ 58,748 ​ ​ 6,370 ​ ​ — ​ ​ — ​ ​ 65,118 Carrier Services ​ ​ 1,883 ​ ​ 18,736 ​ ​ — ​ ​ — ​ ​ 20,619 Other ​ 218 ​ ​ — ​ ​ — ​ ​ — ​ ​ 218 Total Communication Services Revenue ​ 82,670 ​ ​ 27,966 ​ ​ — ​ ​ — ​ ​ 110,636 Construction ​ ​ — ​ ​ 12,306 ​ ​ — ​ ​ — ​ ​ 12,306 Other ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Renewable Energy ​ ​ — ​ ​ — ​ ​ 418 ​ ​ — ​ ​ 418 Managed Services ​ ​ 1,150 ​ ​ — ​ ​ — ​ ​ — ​ ​ 1,150 Total Other Revenue ​ ​ 1,150 ​ ​ — ​ ​ 418 ​ ​ — ​ ​ 1,568 Total Revenue ​ ​ 83,820 ​ ​ 40,272 ​ ​ 418 ​ ​ — ​ ​ 124,510 Depreciation ​ 13,429 ​ ​ 5,193 ​ ​ 188 ​ ​ 1,301 ​ 20,111 Amortization of intangibles from acquisitions ​ ​ 397 ​ ​ — ​ ​ — ​ ​ — ​ ​ 397 Non-cash stock-based compensation ​ 37 ​ ​ 15 ​ ​ 22 ​ ​ 1,262 ​ 1,336 Operating income (loss) ​ 13,116 ​ ​ (534) ​ ​ (662) ​ ​ (8,571) ​ 3,349 ​ (1) Corporate and Other items refer to corporate overhead costs and consolidating adjustments Selected balance sheet data for each of the Company’s segments as of March 31, 2022 and December 31, 2021 consists of the following (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated March 31, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash, cash equivalents, and short term investments ​ $ 40,101 ​ $ 29,285 ​ $ 705 ​ $ 5,957 ​ $ 76,048 Total current assets ​ ​ 105,551 ​ ​ 108,779 ​ ​ 3,653 ​ ​ 2,858 ​ ​ 220,841 Fixed assets, net ​ ​ 448,064 ​ ​ 476,491 ​ ​ — ​ ​ 9,320 ​ ​ 933,875 Goodwill ​ 4,835 ​ 35,269 ​ — ​ — ​ ​ 40,104 Total assets ​ 623,497 ​ 868,338 ​ 17,053 ​ 81,819 ​ ​ 1,590,707 Total current liabilities ​ ​ 80,857 ​ ​ 87,434 ​ ​ 356 ​ ​ 16,079 ​ ​ 184,726 Total debt ​ ​ 63,342 ​ ​ 259,159 ​ ​ — ​ ​ 71,500 ​ ​ 394,001 December 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash, cash equivalents, and short term investments ​ $ 43,128 ​ $ 28,486 ​ $ 659 ​ $ 7,628 ​ $ 79,901 Total current assets ​ ​ 108,677 ​ ​ 111,741 ​ ​ 3,585 ​ ​ 8,614 ​ ​ 232,617 Fixed assets, net ​ ​ 452,856 ​ ​ 480,250 ​ ​ — ​ ​ 10,103 ​ ​ 943,209 Goodwill ​ 4,835 ​ 35,269 ​ — ​ — ​ ​ 40,104 Total assets ​ 630,515 ​ 877,041 ​ 17,481 ​ 83,567 ​ ​ 1,608,604 Total current liabilities ​ ​ 91,090 ​ ​ 108,950 ​ ​ 356 ​ ​ 20,548 ​ ​ 220,944 Total debt ​ ​ 64,243 ​ ​ 240,802 ​ ​ — ​ ​ 61,499 ​ ​ 366,544 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Capital Expenditures ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ ​ US ​ ​ Corporate and ​ ​ ​ Three months ended March 31, ​ ​ Telecom ​ ​ Telecom ​ ​ Other (1) ​ ​ Consolidated 2022 ​ $ 15,170 ​ $ 19,095 ​ $ 203 ​ $ 34,468 2021 ​ ​ 10,506 ​ ​ 14,939 ​ ​ 235 ​ ​ 25,680 ​ (1) Corporate and other items refer to corporate overhead costs and consolidating adjustments

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	3 Months Ended
	Mar. 31, 2022
COMMITMENTS AND CONTINGENCIES
COMMITMENTS AND CONTINGENCIES	14. COMMITMENTS AND CONTINGENCIES ​ Regulatory and Litigation Matters The Company and its subsidiaries are subject to certain regulatory and legal proceedings and other claims arising in the ordinary course of business, some of which involve claims for damages and taxes that are substantial in amount. The Company believes that, except for the items discussed below, for which the Company is currently unable to predict the final outcome, the disposition of proceedings currently pending will not have a material adverse effect on the Company’s financial position or results of operations. In 1990, the Company’s Guyana subsidiary, GTT, was awarded a license to provide domestic 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 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 October 5, 2020, the Prime Minister of Guyana formally implemented telecommunications legislation previously passed by the Guyana Parliament in 2016 that introduces material changes to many features of Guyana’s existing telecommunications regulatory regime with the intention of creating a more competitive market. At that time, the Company was issued a new license to provide domestic and international voice as well as data services and mobile services in Guyana. Two of the Company’s competitors were issued service licenses as well. While the Company has requested details of its competitors’ licenses, such information has not been made public by the Guyana Telecommunications Agency, and the Company is not yet able to ascertain whether the licenses issued to its competitors permit any competitors to provide services that have been subject to GTT’s exclusive rights contained in its 1990 license. On October 23, 2020, the Government of Guyana also brought into effect new telecommunications regulations called for by the telecommunications legislation. The regulations include new requirements for the market as a whole, which impose costly additional regulatory fees and impact the Company’s operations, administrative reporting and services. There can be no assurance that these regulations will be effectively implemented, or that they will be administered in a fair and transparent manner. Historically, GTT has been subject to other long-standing litigation proceedings and disputes in Guyana that have not yet been resolved. 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 operations 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 of Guyana. GTT has objected to the NFMU’s proposed action and reiterated its position that an increase in fees prior to development of an acceptable methodology would violate the Government’s prior agreement. In 2011, GTT paid the NFMU $2.6 million representing payments in full for 2008, 2009 and 2010. However, by letter dated November 23, 2011, the NFMU stated that it did not concur with GTT’s inference that the amount was payment in full for the specified years as it was NFMU’s continued opinion that the final calculation for spectrum fees was not agreed upon and was still an outstanding issue. By further letter dated November 24, 2011, the NFMU further rejected a proposal that was previously submitted jointly by GTT and another communications provider that outlined a recommended methodology for the calculation of these fees. The NFMU stated that it would prepare its own recommendation for consideration by the Minister of Telecommunications, who would decide the matter. GTT has paid undisputed spectrum fees according to the methodology used for its 2011 payments and has reserved amounts payable according to this methodology. There have been limited further discussions on this subject and GTT has not been given the opportunity to review recommendations made by the NFMU to the Minister on spectrum fee methodology, if any. On May 8, 2009, a GTT competitor, Digicel, filed a lawsuit in Guyana challenging the legality of GTT’s exclusive license rights under Guyana’s constitution and GTT intervened in the suit in order to oppose Digicel’s claims. The case remains pending. The Company believes that any legal challenge to GTT’s exclusive license rights granted in 1990 is without merit and the Company continues to defend vigorously against such legal challenge. GTT has filed several lawsuits in the High Court of Guyana asserting that, despite its denials, Digicel is engaged in international bypass in violation of GTT’s exclusive license rights, the interconnection agreement between the parties, and the laws of Guyana. Digicel filed counterclaims alleging that GTT has violated the terms of the interconnection agreement and Guyana laws. These suits, filed in 2010 and 2012, have been consolidated with Digicel’s constitutional challenge described above. Prior to the declaration of COVID-19 related travel and business restrictions in Guyana, the consolidated cases were scheduled to proceed to trial in 2020. GTT expects to resume the litigation following the lifting of COVID-19 related restrictions and intends to prosecute these matters vigorously; however, the Company cannot accurately predict at this time when the consolidated suit will go to trial. ​ GTT is also involved in several legal claims regarding its tax filings with the Guyana Revenue Authority dating back to 1991 regarding the deductibility of intercompany advisory fees as well as other tax assessments. The Company maintains that any liability GTT might be found to have with respect to the disputed tax assessments, totaling $44.1 million, would be offset in part by the amounts necessary to ensure that GTT’s return on investment was no less than 15% per annum for the relevant periods. ​ On May 20, 2021, the Company was served with a notice of application for enforcement of a foreign judgment with respect to a matter brought by the Trinidad & Tobago Electric Commission (“TTEC”) in the High Court of Justice in the Republic of Trinidad and Tobago in August 2013 against the Company and other defendants, alleging breach of contract due to the Company’s failure to pay TTEC in connection with amounts alleged to be owed as reimbursement for cable repair costs. In May 2015, the Company failed to appear in the matter and a default judgment was entered against the Company in the amount of approximately $2.8 million. In May 2021, TTEC took steps to enforce the judgment by commencing proceedings against GTT in Guyana, however, in May of 2022, the High Court of Guyana denied TTEC’s petition. GTT intends to continue to defend its position against the legitimacy of the claim. In February 2020, the Company’s Alaska Communications subsidiary received a draft audit report from USAC in connection with USAC’s inquiry into Alaska Communications’ funding requests under the Rural Health Care Support Program for certain customers for the time period of July 2012 through June 2017. The draft audit report alleges violations of the FCC’s rules for establishing rural rates and urban rates, the provisioning and billing of ineligible services and products, and violations of the FCC’s competitive bidding rules. Alaska Communications has provided USAC with extensive comments in response to its draft audit report seeking correction of numerous factual and legal errors that it believed it had identified. As a result of these conversations and comments being submitted by Alaska Communications, USAC’s auditors may revise their findings, including the amounts they recommend USAC seek to recover. USAC’s auditors are expected to issue a final audit report incorporating Alaska Communications’ responses that will be sent to USAC’s Rural Health Care Division to review and determine if corrective action would be appropriate. In the event that the Company disagrees with USAC’s final audit report, the Company can appeal that decision to USAC’s Rural Health Care Division and/or the FCC. At this time, the Company cannot predict the contents or timing of the final USAC audit report, the outcome of the audit or the impact on the Company’s business, financial condition, results of operations, or liquidity. Alaska Communications also received a Letter of Inquiry on March 18, 2018, and subsequent follow up information requests, from the FCC Enforcement Bureau requesting historical information regarding Alaska Communications’ participation in the FCC’s Rural Health Care Support Program. The Company will continue to work constructively with the FCC’s Enforcement Bureau to provide it the information it is seeking. At this time, the Company cannot predict the outcome of the FCC Enforcement Bureau’s inquiry or the impact it may have on its business, financial condition, results of operations or liquidity. ​ With respect to all of the foregoing matters, the Company believes that some adverse outcome is probable and has accordingly accrued $13.3 million as of March 31, 2022 for these and other potential liabilities arising in various claims, legal actions and regulatory proceedings arising in the ordinary course of business. The Company also faces contingencies that are reasonably possible to occur that cannot currently be estimated. It is the Company’s policy to expense costs associated with loss contingencies, including any related legal fees, as they are incurred. ​

BASIS OF PRESENTATION (Policies

BASIS OF PRESENTATION (Policies)	3 Months Ended
	Mar. 31, 2022
BASIS OF PRESENTATION.
Basis of Presentation	The accompanying condensed consolidated financial statements have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). The financial information included herein is unaudited; however, the Company believes such information and the disclosures herein are adequate to make the information presented not misleading and reflect all adjustments (consisting only of normal recurring adjustments) that are necessary for a fair statement of the Company’s financial position and results of operations for the periods described therein. The year-end condensed balance sheet data was derived from audited financial statements but does not include all disclosures required by accounting principles generally accepted in the United States of America. Results of interim periods may not be indicative of results for the full year. These condensed consolidated financial statements and related notes should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, filed with the SEC on March 16, 2022. ​ The condensed consolidated financial statements include the accounts of the Company, its subsidiaries in which the Company holds controlling interests 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. ​ ​ Presentation of Revenue ​ Effective October 1, 2021, the Company’s statement of operations separately reflects Construction Revenue. All periods presented have been adjusted to conform to these presentation updates. ​ Presentation of Operating Expenses ​ Effective January 1, 2021, the Company changed its presentation of operating expenses in the Condensed Consolidated Statements of Operations by combining the previously disclosed Termination and Access Fees with Engineering and Operations as the newly represented Costs of communication services and other. In addition, the previously disclosed Sales, Marketing and Customer Service expenses are now combined with the previously disclosed General and Administrative expenses within the newly represented Selling, General and Administrative expenses. The change in presentation was made to better align the Company’s results with industry standards. Cost of construction services continues to be broken out separately and all depreciation and amortization continues to be shown separately.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In October 2021, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) ASU 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, which requires entities to apply Topic 606 to recognize and measure contract assets and contract liabilities in a business combination. ASU 2021-08 is effective for fiscal years beginning after December 15, 2022, with early adoption permitted. The Company prospectively adopted this accounting standard in 2021. ​ In November 2021, the FASB issued ASU 2021-10, Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance, which required entities to make specific annual disclosures about transactions with a government. The new standard is effective for fiscal years beginning after December 15, 2021. We are currently evaluating the impact of the standard, but we do not expect it to have a material impact on our disclosures.

ORGANIZATION AND BUSINESS OPE_2

ORGANIZATION AND BUSINESS OPERATIONS (Tables)	3 Months Ended
	Mar. 31, 2022
ORGANIZATION AND BUSINESS OPERATIONS
Schedule of the operating activities of the Company's principal subsidiaries, the segments in which the Company reports its revenue and markets served	​ ​ ​ ​ ​ ​ ​ ​ Segment Services Markets Tradenames International Telecom Mobility Services Bermuda, Guyana, US Virgin Islands One, GTT+, Viya ​ ​ Fixed Services Bermuda, Cayman Islands, Guyana, US Virgin Islands One, Logic, GTT, Viya ​ ​ Carrier Services ​ Bermuda, Guyana, US Virgin Islands ​ One, GTT+, Viya ​ ​ Managed Services ​ Bermuda, Cayman Islands, US Virgin Islands, Guyana ​ Fireminds, One, Logic, GTT, Viya US Telecom Mobility Services United States (rural markets) Choice, Choice NTUA Wireless, Geoverse ​ ​ Fixed Services ​ United States Alaska Communications, Commnet, Choice, Choice NTUA Wireless ​ ​ Carrier Services ​ United States ​ Alaska Communications, Commnet, Essextel ​ Managed Services United States Alaska Communications, Choice Renewable Energy (1) ​ Solar ​ India ​ Vibrant Energy

REVENUE RECOGNITION AND RECEI_2

REVENUE RECOGNITION AND RECEIVABLES (Tables)	3 Months Ended
	Mar. 31, 2022
REVENUE RECOGNITION AND RECEIVABLES
Summary of contracts asset and liabilities	Contract assets and liabilities consisted of the following (amounts in thousands) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 ​ December 31, 2021 ​ ​ $ Change ​ % Change Contract asset – current $ 4,123 ​ $ 4,805 ​ $ (682) ​ (14) % Contract asset – noncurrent ​ 890 ​ ​ 900 ​ ​ (10) ​ (1) % Contract liability – current ​ (23,756) ​ ​ (25,332) ​ ​ 1,576 ​ 6 % Contract liability – noncurrent ​ (78,861) ​ ​ (81,391) ​ ​ 2,530 ​ 3 % Net contract liability $ (97,604) ​ $ (101,018) ​ $ 3,414 ​ 3 %
Schedule of activity in allowances for credit losses	​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, 2022 ​ Three months ended March 31, 2021 ​ ​ ​ ​ ​ ​ ​ Balance at beginning of period $ 13,885 ​ $ 12,121 Current period provision for expected losses ​ 1,913 ​ ​ 1,122 Write-offs charged against the allowance ​ (862) ​ ​ (354) Recoveries collected ​ ​ 108 ​ ​ 124 Balance at end of period ​ $ 15,044 ​ $ 13,013

LEASES (Tables)

LEASES (Tables)	3 Months Ended
	Mar. 31, 2022
LEASES
Summary of components of lease expense	The components of lease expense were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, 2022 ​ Three months ended March 31, 2021 Operating lease cost: ​ ​ ​ ​ ​ Operating lease cost $ 6,142 ​ $ 4,225 Short-term lease cost ​ 509 ​ ​ 408 Variable lease cost ​ 804 ​ ​ 1,065 Total operating lease cost $ 7,455 ​ $ 5,698 ​ ​ ​ ​ ​ ​ Finance lease cost: ​ ​ ​ ​ ​ Amortization of right-of-use asset $ 797 ​ $ 574 Variable costs ​ 248 ​ ​ 196 Interest costs ​ 102 ​ ​ - Total finance lease cost $ 1,147 ​ $ 770
Summary of weighted-average remaining lease term and discount rate	​ The weighted average remaining lease terms and discount rates as of March 31, 2022 and December 31, 2021 are noted in the table below: ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 ​ December 31, 2021 Weighted-average remaining lease term ​ ​ ​ ​ ​ Operating leases ​ 11.3 years ​ ​ 11.3 years Financing leases ​ 9.6 years ​ ​ 9.5 years ​ ​ ​ ​ ​ ​ Weighted-average discount rate ​ ​ ​ ​ ​ Operating leases ​ 5.2% ​ ​ 5.4% Financing leases ​ 6.2% ​ ​ 6.4%
Summary of maturities of operating lease liabilities	Maturities of lease liabilities as of March 31, 2022 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Financing Leases 2022 (excluding the three months ended March 31, 2022) $ 16,310 ​ $ 1,092 2023 ​ 18,466 ​ ​ 1,463 2024 ​ 16,996 ​ ​ 1,354 2025 ​ 14,156 ​ ​ 1,132 2026 ​ 10,047 ​ ​ 532 Thereafter ​ 68,363 ​ ​ 3,145 Total lease payments ​ 144,338 ​ ​ 8,718 Less imputed interest ​ (42,399) ​ ​ (2,211) Total $ 101,939 ​ $ 6,507 ​ Maturities of lease liabilities as of December 31, 2021 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Financing Leases 2022 $ 20,474 ​ $ 1,269 2023 ​ 17,941 ​ ​ 1,278 2024 ​ 16,634 ​ ​ 1,169 2025 ​ 13,640 ​ ​ 975 2026 ​ 9,610 ​ ​ 484 Thereafter ​ 65,902 ​ ​ 3,145 Total lease payments ​ 144,201 ​ ​ 8,320 Less imputed interest ​ (42,333) ​ ​ (2,268) Total $ 101,868 ​ $ 6,052
Summary of maturities of finance lease liabilities	​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Financing Leases 2022 (excluding the three months ended March 31, 2022) $ 16,310 ​ $ 1,092 2023 ​ 18,466 ​ ​ 1,463 2024 ​ 16,996 ​ ​ 1,354 2025 ​ 14,156 ​ ​ 1,132 2026 ​ 10,047 ​ ​ 532 Thereafter ​ 68,363 ​ ​ 3,145 Total lease payments ​ 144,338 ​ ​ 8,718 Less imputed interest ​ (42,399) ​ ​ (2,211) Total $ 101,939 ​ $ 6,507 ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Financing Leases 2022 $ 20,474 ​ $ 1,269 2023 ​ 17,941 ​ ​ 1,278 2024 ​ 16,634 ​ ​ 1,169 2025 ​ 13,640 ​ ​ 975 2026 ​ 9,610 ​ ​ 484 Thereafter ​ 65,902 ​ ​ 3,145 Total lease payments ​ 144,201 ​ ​ 8,320 Less imputed interest ​ (42,333) ​ ​ (2,268) Total $ 101,868 ​ $ 6,052
Schedule of maturities of future undiscounted lease payments	​ ​ ​ ​ 2022 (excluding the three months ended March 31, 2022) $ 4,042 2023 ​ 4,807 2024 ​ 4,406 2025 ​ 4,288 2026 ​ 3,916 Thereafter ​ 10,455 Total future lease payments $ 31,914

ACQUISITIONS AND DISPOSITIONS (

ACQUISITIONS AND DISPOSITIONS (Tables)	3 Months Ended
	Mar. 31, 2022
ACQUISITIONS AND DISPOSITIONS
Schedule of preliminary allocation of the total consideration transferred to the acquired assets and assumed liabilities	​ The table below represents the allocation of the total consideration transferred to the acquired assets and assumed liabilities based on management’s estimate of their acquisition date fair values (amounts in thousands): ​ ​ ​ ​ Consideration Transferred $ 353,280 Noncontrolling interests ​ 470 Total value to allocate ​ 353,750 Purchase price allocation: ​ ​ Cash and cash equivalents ​ 10,553 Restricted cash ​ 1,326 Short-term investments ​ 434 Accounts receivable ​ 30,453 Inventory, materials and supplies ​ 1,374 Prepayments and other current assets ​ 8,038 Fixed assets ​ 408,694 Telecommunication licenses ​ 683 Intangible assets ​ 44,333 Operating lease right-of-use assets ​ 60,402 Other assets ​ 2,387 Accounts payable and accrued liabilities ​ (39,188) Accrued taxes ​ (3,766) Advance payments and deposits ​ (15,842) Current portion of lease liabilities ​ (2,425) Deferred income taxes ​ (17,040) Lease liabilities, excluding current portion ​ (44,234) Other liabilities ​ (92,432) Net assets acquired $ 353,750
Schedule of assets and liabilities transferred	​ ​ ​ ​ Consideration Received $ 35,218 Assets and liabilities disposed ​ ​ Current assets ​ 4,899 Property, plant and equipment ​ 45,891 Other assets ​ 439 Current liabilities ​ (759) Net assets disposed $ 50,470 ​ ​ ​ Consideration less net assets disposed ​ (15,252) ​ ​ ​ Foreign currency losses reclassified from accumulated other comprehensive income ​ (6,258) ​ ​ ​ Loss on sale ​ (21,510) Transaction costs ​ (1,283) Loss on sale including transaction costs $ (22,793)
Schedule of pro forma results of operations	​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ March 30, 2021 ​ ​ As Reported ​ ​ Pro Forma ​ ​ ​ ​ ​ ​ Revenue $ 124,510 ​ $ 185,178 Net Income attributable to ATN International, Inc. Stockholders $ 2,706 ​ $ 1,034 ​ ​ ​ ​ ​ ​ Earnings Per Share ​ ​ ​ ​ ​ Basic $ 0.17 ​ $ (0.01) Diluted $ 0.17 ​ $ (0.01)

FAIR VALUE MEASUREMENTS AND I_2

FAIR VALUE MEASUREMENTS AND INVESTMENTS (Tables)	3 Months Ended
	Mar. 31, 2022
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Schedule of assets and liabilities of the entity measured at fair value on a recurring basis	​ Assets and liabilities of the Company measured at fair value on a recurring basis as of March 31, 2022 and December 31, 2021 are summarized as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 ​ ​ Significant Other ​ ​ Quoted Prices in ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Active Markets ​ Inputs ​ Inputs ​ ​ ​ Description ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ Total Money market funds ​ $ 3,164 ​ $ — ​ $ — ​ $ 3,164 Short term investments ​ ​ 300 ​ ​ — ​ ​ — ​ ​ 300 Other investments ​ ​ — ​ ​ — ​ ​ 2,024 ​ ​ 2,024 Alaska Communications redeemable common units ​ ​ — ​ ​ — ​ ​ (22,640) ​ ​ (22,640) Warrants on Alaska Communications redeemable common units ​ ​ — ​ ​ — ​ ​ (559) ​ ​ (559) Interest rate swap ​ ​ — ​ ​ (279) ​ ​ — ​ ​ (279) Total assets and liabilities measured at fair value ​ $ 3,464 ​ $ (279) ​ $ (21,175) ​ $ (17,990) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2021 ​ Significant Other ​ ​ Quoted Prices in ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Active Markets ​ Inputs ​ Inputs ​ ​ ​ Description ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ Total Money market funds ​ $ 3,301 ​ $ — ​ $ — ​ $ 3,301 Short term investments ​ ​ 300 ​ ​ — ​ ​ — ​ ​ 300 Other investments ​ ​ — ​ ​ — ​ ​ 1,925 ​ ​ 1,925 Alaska Communications redeemable common units ​ ​ — ​ ​ — ​ ​ (22,640) ​ ​ (22,640) Warrants on Alaska Communications redeemable common units ​ ​ — ​ ​ — ​ ​ (559) ​ ​ (559) Interest rate swap ​ ​ — ​ ​ (894) ​ ​ — ​ ​ (894) Total assets and liabilities measured at fair value ​ $ 3,601 ​ $ (894) ​ $ (21,274) ​ $ (18,567)

GOVERNMENT SUPPORT AND SPECTR_2

GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS (Tables)	3 Months Ended
	Mar. 31, 2022
Communication services
Disaggregation of Revenue [Line Items]
Summary of revenues	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ March 31, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ US Telecom ​ International Telecom ​ Total ​ ​ ​ ​ ​ ​ ​ ​ ​ High cost support $ 1,056 ​ $ 2,761 ​ $ 3,817 CAF II ​ 6,822 ​ ​ — ​ ​ 6,822 Other Programs ​ 5,554 ​ ​ — ​ ​ 5,554 Total $ 13,432 ​ $ 2,761 ​ $ 16,193 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ US Telecom ​ International Telecom ​ Total ​ ​ ​ ​ ​ ​ ​ ​ ​ High cost support $ 311 ​ $ 4,090 ​ $ 4,401 CAF II ​ 1,899 ​ ​ — ​ ​ 1,899 Other Programs ​ 2,132 ​ ​ — ​ ​ 2,132 Total $ 4,342 ​ $ 4,090 ​ $ 8,432

RETIREMENT PLANS (Tables)

RETIREMENT PLANS (Tables)	3 Months Ended
	Mar. 31, 2022
RETIREMENT PLANS
Schedule of components of the plan's net periodic pension cost	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ March 31, 2022 March 31, 2021 ​ Pension benefits ​ Postretirement benefits ​ Pension benefits ​ Postretirement benefits Operating expense ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Service cost $ 57 ​ $ 36 ​ $ 54 ​ $ 35 Non-operating expense ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest cost ​ 565 ​ ​ 33 ​ ​ 572 ​ ​ 41 Expected return on plan assets (925) ​ — ​ ​ (687) ​ — Actuarial (gain)/ loss ​ — ​ ​ — ​ ​ — ​ ​ — Net periodic pension expense (benefit) $ (303) ​ $ 69 ​ $ (61) ​ $ 76

EARNINGS PER SHARE AND REDEEM_2

EARNINGS PER SHARE AND REDEEMABLE NONCONTROLLING INTERESTS (Tables)	3 Months Ended
	Mar. 31, 2022
EARNINGS PER SHARE AND REDEEMABLE NONCONTROLLING INTERESTS
Schedule of computation of basic and diluted earnings per share	The following table reconciles the numerator and denominator in the computations of basic and diluted earnings per share (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ 2022 ​ 2021 Numerator: ​ ​ ​ ​ ​ Net loss attributable to ATN International, Inc. stockholders ​ (948) ​ ​ 2,706 Less: Preferred dividends ​ (1,116) ​ ​ — Net loss attributable to ATN International, Inc. common stockholders $ (2,064) ​ $ 2,706 ​ ​ ​ ​ ​ ​ Denominator: ​ ​ ​ ​ ​ Weighted-average shares outstanding- Basic ​ 15,708 ​ ​ 15,902 Effective of dilutive securities: ​ ​ ​ ​ ​ Stock options, restricted stock units and performance stock units ​ — ​ ​ 50 Weighted-average shares outstanding- Diluted ​ 15,708 ​ ​ 15,952
Schedule of rollforward activity related to the Company's redeemable noncontrolling interests	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Redeemable Preferred Units ​ Redeemable Common Units ​ Total Redeemable Noncontrolling Interests Balance, December 31, 2021 $ 50,296 ​ $ 22,640 ​ $ 72,936 Accrued preferred dividend ​ 1,116 ​ ​ — ​ ​ 1,116 Allocated net loss ​ — ​ ​ (1,092) ​ ​ (1,092) Change in fair value ​ — ​ ​ 1,092 ​ ​ 1,092 Balance, March 31, 2022 $ 51,412 ​ $ 22,640 ​ $ 74,052

SEGMENT REPORTING (Tables)

SEGMENT REPORTING (Tables)	3 Months Ended
	Mar. 31, 2022
SEGMENT REPORTING
Schedule of information for each operating segment	The following tables provide information for each operating segment (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended March 31, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Communication Services ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mobility - Business ​ $ 3,616 ​ $ 374 ​ $ — ​ $ — ​ $ 3,990 Mobility - Consumer ​ ​ 19,970 ​ ​ 1,456 ​ ​ — ​ ​ — ​ ​ 21,426 Total Mobility ​ ​ 23,586 ​ ​ 1,830 ​ ​ — ​ ​ — ​ ​ 25,416 Fixed - Business ​ ​ 17,254 ​ ​ 27,145 ​ ​ — ​ ​ — ​ ​ 44,399 Fixed - Consumer ​ ​ 41,093 ​ ​ 18,968 ​ ​ — ​ ​ — ​ ​ 60,061 Total Fixed ​ ​ 58,347 ​ 46,113 ​ — ​ — ​ 104,460 Carrier Services ​ ​ 3,402 ​ ​ 32,989 ​ ​ — ​ ​ — ​ ​ 36,391 Other ​ 276 ​ ​ — ​ ​ — ​ ​ — ​ ​ 276 Total Communication Services Revenue ​ 85,611 ​ ​ 80,932 ​ ​ — ​ ​ — ​ ​ 166,543 Construction ​ ​ — ​ ​ 1,987 ​ ​ — ​ ​ — ​ ​ 1,987 Other ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Managed Services ​ ​ 1,176 ​ ​ 2,313 ​ ​ — ​ ​ — ​ ​ 3,489 Total Other Revenue ​ ​ 1,176 ​ ​ 2,313 ​ ​ — ​ ​ — ​ ​ 3,489 Total Revenue ​ ​ 86,787 ​ ​ 85,232 ​ ​ — ​ ​ — ​ ​ 172,019 Depreciation ​ 13,897 ​ 18,442 ​ — ​ 953 ​ 33,292 Amortization of intangibles from acquisitions ​ ​ 418 ​ ​ 2,840 ​ ​ — ​ ​ — ​ ​ 3,258 Non-cash stock-based compensation ​ 60 ​ 90 ​ — ​ 1,311 ​ 1,461 Operating income (loss) ​ 11,803 ​ (4,635) ​ (23) ​ (7,037) ​ 108 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Communication Services ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mobility - Business ​ $ 1,197 ​ $ 576 ​ $ — ​ $ — ​ $ 1,773 Mobility - Consumer ​ ​ 20,624 ​ ​ 2,284 ​ ​ — ​ ​ — ​ ​ 22,908 Total Mobility ​ ​ 21,821 ​ ​ 2,860 ​ ​ — ​ ​ — ​ ​ 24,681 Fixed - Business ​ ​ 16,634 ​ ​ 2,696 ​ ​ — ​ ​ — ​ ​ 19,330 Fixed - Consumer ​ ​ 42,114 ​ ​ 3,674 ​ ​ — ​ ​ — ​ ​ 45,788 Total Fixed ​ ​ 58,748 ​ ​ 6,370 ​ ​ — ​ ​ — ​ ​ 65,118 Carrier Services ​ ​ 1,883 ​ ​ 18,736 ​ ​ — ​ ​ — ​ ​ 20,619 Other ​ 218 ​ ​ — ​ ​ — ​ ​ — ​ ​ 218 Total Communication Services Revenue ​ 82,670 ​ ​ 27,966 ​ ​ — ​ ​ — ​ ​ 110,636 Construction ​ ​ — ​ ​ 12,306 ​ ​ — ​ ​ — ​ ​ 12,306 Other ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Renewable Energy ​ ​ — ​ ​ — ​ ​ 418 ​ ​ — ​ ​ 418 Managed Services ​ ​ 1,150 ​ ​ — ​ ​ — ​ ​ — ​ ​ 1,150 Total Other Revenue ​ ​ 1,150 ​ ​ — ​ ​ 418 ​ ​ — ​ ​ 1,568 Total Revenue ​ ​ 83,820 ​ ​ 40,272 ​ ​ 418 ​ ​ — ​ ​ 124,510 Depreciation ​ 13,429 ​ ​ 5,193 ​ ​ 188 ​ ​ 1,301 ​ 20,111 Amortization of intangibles from acquisitions ​ ​ 397 ​ ​ — ​ ​ — ​ ​ — ​ ​ 397 Non-cash stock-based compensation ​ 37 ​ ​ 15 ​ ​ 22 ​ ​ 1,262 ​ 1,336 Operating income (loss) ​ 13,116 ​ ​ (534) ​ ​ (662) ​ ​ (8,571) ​ 3,349 ​ (1) Corporate and Other items refer to corporate overhead costs and consolidating adjustments
Schedule of segment balance sheet data and capital expenditures	Selected balance sheet data for each of the Company’s segments as of March 31, 2022 and December 31, 2021 consists of the following (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated March 31, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash, cash equivalents, and short term investments ​ $ 40,101 ​ $ 29,285 ​ $ 705 ​ $ 5,957 ​ $ 76,048 Total current assets ​ ​ 105,551 ​ ​ 108,779 ​ ​ 3,653 ​ ​ 2,858 ​ ​ 220,841 Fixed assets, net ​ ​ 448,064 ​ ​ 476,491 ​ ​ — ​ ​ 9,320 ​ ​ 933,875 Goodwill ​ 4,835 ​ 35,269 ​ — ​ — ​ ​ 40,104 Total assets ​ 623,497 ​ 868,338 ​ 17,053 ​ 81,819 ​ ​ 1,590,707 Total current liabilities ​ ​ 80,857 ​ ​ 87,434 ​ ​ 356 ​ ​ 16,079 ​ ​ 184,726 Total debt ​ ​ 63,342 ​ ​ 259,159 ​ ​ — ​ ​ 71,500 ​ ​ 394,001 December 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash, cash equivalents, and short term investments ​ $ 43,128 ​ $ 28,486 ​ $ 659 ​ $ 7,628 ​ $ 79,901 Total current assets ​ ​ 108,677 ​ ​ 111,741 ​ ​ 3,585 ​ ​ 8,614 ​ ​ 232,617 Fixed assets, net ​ ​ 452,856 ​ ​ 480,250 ​ ​ — ​ ​ 10,103 ​ ​ 943,209 Goodwill ​ 4,835 ​ 35,269 ​ — ​ — ​ ​ 40,104 Total assets ​ 630,515 ​ 877,041 ​ 17,481 ​ 83,567 ​ ​ 1,608,604 Total current liabilities ​ ​ 91,090 ​ ​ 108,950 ​ ​ 356 ​ ​ 20,548 ​ ​ 220,944 Total debt ​ ​ 64,243 ​ ​ 240,802 ​ ​ — ​ ​ 61,499 ​ ​ 366,544 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Capital Expenditures ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ ​ US ​ ​ Corporate and ​ ​ ​ Three months ended March 31, ​ ​ Telecom ​ ​ Telecom ​ ​ Other (1) ​ ​ Consolidated 2022 ​ $ 15,170 ​ $ 19,095 ​ $ 203 ​ $ 34,468 2021 ​ ​ 10,506 ​ ​ 14,939 ​ ​ 235 ​ ​ 25,680 ​ (1) Corporate and other items refer to corporate overhead costs and consolidating adjustments

ORGANIZATION AND BUSINESS OPE_3

ORGANIZATION AND BUSINESS OPERATIONS (Details)	3 Months Ended
	Mar. 31, 2022segment
ORGANIZATION AND BUSINESS OPERATIONS
Number of operating segments	3

ORGANIZATION AND BUSINESS OPE_4

ORGANIZATION AND BUSINESS OPERATIONS - Acquisition of Alaska Communications (Details) - USD ($) $ in Thousands	Jul. 22, 2021	Mar. 31, 2022	Mar. 31, 2021
Line of Credit Facility [Line Items]
Borrowings		$ 8,000	$ 10,814
Alaska communications
Line of Credit Facility [Line Items]
Cash consideration	$ 339,500
Mezzanine equity contribution received from Freedom 3 Investors	$ 71,500
Ownership interest (as a percent)	52.00%
Transaction costs	$ 11,000
Alaska credit facility | Alaska communications
Line of Credit Facility [Line Items]
Borrowings	$ 220,000

REVENUE RECOGNITION AND RECEI_3

REVENUE RECOGNITION AND RECEIVABLES - Contract Assets and Liabilities (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)
Contract Assets and Liabilities
Contract Asset - current	$ 4,805
Change in contract asset - current	(682)
Contract Asset - current	$ 4,123
% of change in contract asset - current	(14.00%)
Contract asset, noncurrent	$ 900
Change in contract asset - noncurrent	(10)
Contract asset, noncurrent	$ 890
% of change in contract asset - noncurrent	(1.00%)
Contract liability- current	$ (25,332)
Change in contract liabilities - current	1,576
Contract liability- current	$ (23,756)
% of change in contract liabilities - current	6.00%
Contract liability- noncurrent	$ (81,391)
Change in contract liabilities - noncurrent	2,530
Contract liability- noncurrent	$ (78,861)
% of change in contract liabilities - Noncurrent	3.00%
Net contract liability	$ (101,018)
Change in net contract liability	3,414
Net contract liability	$ (97,604)
% of change in net contract liability	3.00%
Revenue recognized related to contract liability	$ 15,000
Amortization of contract assets	$ 700
Retail revenue period for billing postpaid customers in advance	1 month

REVENUE RECOGNITION AND RECEI_4

REVENUE RECOGNITION AND RECEIVABLES - Contract Acquisition Costs (Details) - USD ($) $ in Millions	Mar. 31, 2022	Mar. 31, 2021
Prepayments and other current assets
Contract Acquisition Costs
Short-term contract acquisition costs	$ 5.1
Other Assets
Contract Acquisition Costs
Long-term contract acquisition costs	$ 0.8	$ 0.6

REVENUE RECOGNITION AND RECEI_5

REVENUE RECOGNITION AND RECEIVABLES - Remaining Performance Obligations - (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Revenue Recognition
Transaction price allocated to unsatisfied performance obligations		$ 369
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue Recognition
Transaction price allocated to unsatisfied performance obligations	$ 350
Percentage of performance obligations to be satisfied	52.00%
Period to satisfy the remaining performance obligations and recognize the transaction price	24 months
Right to invoice and wholly unsatisfied performance obligation practical expedients	true

REVENUE RECOGNITION AND RECEI_6

REVENUE RECOGNITION AND RECEIVABLES - Accounts Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accounts Receivable
Gross accounts receivable	$ 129,700	$ 131,400
Allowance for credit loss	15,000	13,900
Retained earnings	470,056	475,887
Customer receivable, current	4,336	4,145
Customer receivable - long term	40,206	39,652
FirstNet agreement
Accounts Receivable
Customer receivable	44,500	43,800
Customer receivable, current	4,300	4,100
Customer receivable - long term	$ 40,200	$ 39,700

REVENUE RECOGNITION AND RECEI_7

REVENUE RECOGNITION AND RECEIVABLES - Allowance for Credit Losses Rollforward - (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
REVENUE RECOGNITION AND RECEIVABLES
Beginning Balance	$ 13,885	$ 12,121
Current period provision for expected losses	1,913	1,122
Write-offs charged against the allowance	(862)	(354)
Recoveries collected	108	124
Ending Balance	$ 15,044	$ 13,013

LEASES - Narrative (Details)

LEASES - Narrative (Details)	Mar. 31, 2022
Minimum
LEASES
Operating lease, lease term	3 years
Finance lease, lease term	3 years
Maximum
LEASES
Operating lease, lease term	10 years
Finance lease, lease term	10 years

LEASES - Components of Lease Ex

LEASES - Components of Lease Expense and Payments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
LEASES
Operating lease cost	$ 6,142	$ 4,225
Short-term lease cost	509	408
Variable lease cost	804	1,065
Total operating lease cost	7,455	5,698
Payments for lease liabilities	5,600	3,500
Lease liabilities arising from ROU	3,700	2,200
Finance lease cost:
Amortization of right-of-use asset	797	574
Variable costs	248	196
Interest costs	102
Total finance lease cost	1,147	770
Finance leases cost included in property, plant and equipment	28,100	26,500	$ 30,800
Accumulated amortization related to finance leases	11,100	10,100	12,100
Principal payments, finance lease liabilities	338
Operating cash flows for finance lease liabilities	100
Additional finance lease liabilities recognized	800	1,100
Finance lease, disposed	1,000
Finance lease liability	6,507	2,200	$ 6,052
Finance lease liability, current	$ 1,100	$ 400

LEASES - Weighted average remai

LEASES - Weighted average remaining lease terms and discount rates (Details)	Mar. 31, 2022	Dec. 31, 2021
LEASES
Operating leases, weighted average remaining lease term	11 years 3 months 18 days	11 years 3 months 18 days
Financing leases, weighted average remaining lease term	9 years 7 months 6 days	9 years 6 months
Operating leases, weighted average discount rate	5.20%	5.40%
Financing leases, weighted average discount rate	6.20%	6.40%

LEASES - Maturities of lease li

LEASES - Maturities of lease liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Lessor, Lease, Description [Line Items]
2022 (excluding the three months ended March 31, 2022)	$ 16,310
Year 1	18,466	$ 20,474
Year 2	16,996	17,941
Year 3	14,156	16,634
Year 4	10,047	13,640
Year 5		9,610
Thereafter	68,363
Thereafter		65,902
Total lease payments	144,338	144,201
Less imputed interest	(42,399)	(42,333)
Total	$ 101,939	$ 101,868
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Lease Liability, Current, Lease Liability, Noncurrent	Lease Liability, Current, Lease Liability, Noncurrent
Finance lease liability
2022 (excluding the three months ended March 31, 2022)	$ 1,092
Year 1	1,463	$ 1,269
Year 2	1,354	1,278
Year 3	1,132	1,169
Year 4	532	975
Year 5		484
Thereafter		3,145
Thereafter	3,145
Total lease payments	8,718	8,320
Less imputed interest	(2,211)	(2,268)
Finance lease liability	$ 6,507	$ 6,052	$ 2,200
Finance Lease, Liability, Statement of Financial Position [Extensible List]	Lease Liability, Current, Lease Liability, Noncurrent	Lease Liability, Current, Lease Liability, Noncurrent
Maturities of future undiscounted lease payments
2022 (excluding the three months ended March 31, 2022)	$ 4,042
2023	4,807
2024	4,406
2025	4,288
2026	3,916
Thereafter	10,455
Total future lease payments	31,914
Network asset
Finance lease liability
Lease income	$ 1,000

ACQUISITIONS AND DISPOSITIONS -

ACQUISITIONS AND DISPOSITIONS - Acquisition of Alaska Communications (Details) - USD ($) $ / shares in Units, $ in Thousands	Jul. 22, 2021	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Business Acquisition [Line Items]
Redeemable noncontrolling interests		$ 74,052		$ 72,936
Amount drawn from revolving credit facility		8,000	$ 10,814
Revenue		172,019	124,510
Income (Loss) from Continuing Operations before Income Taxes		995	4,571
Transaction-related charges		554	$ 730
Redeemable Common Units
Business Acquisition [Line Items]
Redeemable noncontrolling interests		22,640		22,640
Redeemable Preferred Units
Business Acquisition [Line Items]
Redeemable noncontrolling interests		51,412		$ 50,296
Alaska communications
Business Acquisition [Line Items]
Price of common share	$ 3.40
Consideration Transferred	$ 353,280
Cash consideration	339,500
Cash and restricted cash acquired	$ 11,900
Percentage of additional equity interest	3.00%
Original issue price		48,300
Accrued preferred dividend		3,100
Accrued consideration	$ 1,900
Payment for purchase of Alaska Communications equity	186,800
Repayment of Alaska Communications debt	164,600
Mezzanine equity contribution received from Freedom 3 Investors	$ 71,500
Percentage of voting interest	52.00%
Deferred revenue from long term customer contracts	$ 81,500
Revenue		58,300
Income (Loss) from Continuing Operations before Income Taxes		(2,800)
Transaction-related charges	11,000	500
Alaska communications | Warrant for redeemable common unit
Business Acquisition [Line Items]
Warrants value	600	600
Alaska communications | Customer relationships
Business Acquisition [Line Items]
Intangible assets	$ 34,900
Alaska communications | Customer relationships | Minimum
Business Acquisition [Line Items]
Intangible assets useful lives	5 years
Alaska communications | Customer relationships | Maximum
Business Acquisition [Line Items]
Intangible assets useful lives	15 years
Alaska communications | Trade name licenses
Business Acquisition [Line Items]
Intangible assets	$ 9,500
Alaska communications | Trade name licenses | Minimum
Business Acquisition [Line Items]
Intangible assets useful lives	5 years
Alaska communications | Trade name licenses | Maximum
Business Acquisition [Line Items]
Intangible assets useful lives	15 years
Alaska communications | Telecommunication Equipment | Minimum
Business Acquisition [Line Items]
Discounted rate used for cash flows (as a percent)	4.00%
Useful life	2 years
Alaska communications | Telecommunication Equipment | Maximum
Business Acquisition [Line Items]
Discounted rate used for cash flows (as a percent)	14.00%
Useful life	30 years
Alaska communications | Redeemable Common Units
Business Acquisition [Line Items]
Redeemable noncontrolling interests	$ 22,600	22,600
Fair value of units		22,600
Alaska communications | Redeemable Preferred Units
Business Acquisition [Line Items]
Redeemable noncontrolling interests	$ 48,300	48,300
Fair value of units		$ 51,400
Percentage of preferred dividend	9.00%	9.00%
Alaska credit facility | Alaska communications
Business Acquisition [Line Items]
Principal amount	$ 283,000
Debt issuance and debt discount costs	6,600
Amount drawn from revolving credit facility	220,000
Alaska Term Loan | Alaska communications
Business Acquisition [Line Items]
Principal amount	210,000
Alaska revolving facility | Alaska communications
Business Acquisition [Line Items]
Principal amount	10,000
Amount drawn from revolving credit facility	$ 63,000

ACQUISITIONS AND DISPOSITIONS_2

ACQUISITIONS AND DISPOSITIONS - Schedule of preliminary allocation of the total consideration transferred to the acquired assets and assumed liabilities (Details) - Alaska communications $ in Thousands	Jul. 22, 2021USD ($)
Business Acquisition [Line Items]
Consideration Transferred	$ 353,280
Noncontrolling interests	470
Total value to allocate	353,750
Purchase price allocation:
Cash and cash equivalents	10,553
Restricted cash	1,326
Short-term investments	434
Accounts receivable	30,453
Inventory, materials and supplies	1,374
Prepayments and other current assets	8,038
Fixed assets	408,694
Telecommunication licenses	683
Intangible assets	44,333
Operating lease right-of-use assets	60,402
Other assets	2,387
Accounts payable and accrued liabilities	(39,188)
Accrued taxes	(3,766)
Advance payments and deposits	(15,842)
Current portion of lease liabilities	(2,425)
Deferred income taxes	(17,040)
Lease liabilities, excluding current portion	(44,234)
Other liabilities	(92,432)
Net assets acquired	$ 353,750

ACQUISITIONS AND DISPOSITIONS_3

ACQUISITIONS AND DISPOSITIONS - Unaudited pro forma operating results (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
ACQUISITIONS AND DISPOSITIONS
Amount of pre-Close debt, and associated interest removed from pro forma results		$ 164,600
Transaction debt included in pro forma results		283,000
Revenue	$ 172,019	124,510
Net Income attributable to ATN International, Inc. Stockholders	$ (948)	$ 2,706
Earnings Per Share
Basic (in dollars per share)	$ (0.13)	$ 0.17
Diluted (in dollars per share)	$ (0.13)	$ 0.17
Pro Forma
Revenue		$ 185,178
Net Income attributable to ATN International, Inc. Stockholders		1,034
Unaudited pro forma adjustments decrease of net income		$ 1,700
Earnings Per Share
Basic (in dollars per share)		$ (0.01)
Diluted (in dollars per share)		$ (0.01)

ACQUISITIONS AND DISPOSITIONS_4

ACQUISITIONS AND DISPOSITIONS - Disposition - Vibrant Energy (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Assets and liabilities disposed
Transaction costs	$ (1,300)
Vibrant
Disposition
Equity Method Investments	$ 11,800
Equity Method Investment, Ownership Percentage	33.00%
Vibrant | Disposal group, disposed of by sale, not discontinued operations
Disposition
Percentage of equity interest sold	67.00%
Consideration received	$ 35,218
Assets and liabilities disposed
Current assets	4,899
Property, plant and equipment	45,891
Other assets	439
Current liabilities	(759)
Net assets disposed	50,470
Consideration less net assets disposed	(15,252)
Foreign currency losses reclassified from accumulated other comprehensive income	(6,258)
Loss on sale	(21,510)	$ (1,600)	$ (21,500)
Transaction costs	(1,283)	$ (600)	$ (700)
Loss on sale including transaction costs	(22,793)
Cash	19,500
Accounts receivable	$ 3,900
Earn out consideration receivable period		24 months

FAIR VALUE MEASUREMENTS AND I_3

FAIR VALUE MEASUREMENTS AND INVESTMENTS - Recurring (Details) - Recurring basis - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Fair value measurements
Total assets and liabilities measured at fair value	$ (17,990)	$ (18,567)
Alaska communications
Fair value measurements
Derivative liabilities		(22,640)
Money market funds
Fair value measurements
Cash and cash equivalents	3,164	3,301
Short Term Investments
Fair value measurements
Investments	300	300
Other investments
Fair value measurements
Investments	2,024	1,925
Redeemable common units
Fair value measurements
Derivative liabilities	(22,640)
Warrant
Fair value measurements
Derivative liabilities	(559)	(559)
Interest rate swap
Fair value measurements
Derivative liabilities	(279)	(894)
Level 1
Fair value measurements
Total assets and liabilities measured at fair value	3,464	3,601
Level 1 | Money market funds
Fair value measurements
Cash and cash equivalents	3,164	3,301
Level 1 | Short Term Investments
Fair value measurements
Investments	300	300
Level 2
Fair value measurements
Total assets and liabilities measured at fair value	(279)	(894)
Level 2 | Interest rate swap
Fair value measurements
Derivative liabilities	(279)	(894)
Level 3
Fair value measurements
Total assets and liabilities measured at fair value	(21,175)	(21,274)
Level 3 | Alaska communications
Fair value measurements
Derivative liabilities		(22,640)
Level 3 | Other investments
Fair value measurements
Investments	2,024	1,925
Level 3 | Redeemable common units
Fair value measurements
Derivative liabilities	(22,640)
Level 3 | Warrant
Fair value measurements
Derivative liabilities	$ (559)	$ (559)

FAIR VALUE MEASUREMENTS AND I_4

FAIR VALUE MEASUREMENTS AND INVESTMENTS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair value measurements
Payment for investment		$ 4,155
Loss on equity investments	$ (4,222)	$ (2,188)
Privately Held Investment
Fair value measurements
Payments to acquire equity method investment			$ 2,800
Ownership percentage			24.00%
Loss on equity investments				$ 400
Currency gains (losses)				400
Equity Security
Fair value measurements
Investments	16,500			16,500
India solar operations
Fair value measurements
Carrying value	13,400			13,900
Decrease in equity method investments	500
Currency gains (losses)	(200)
Operating losses on equity investments	300
Other Assets | Privately Held Investment
Fair value measurements
Carrying value	14,800			14,800
Other investments
Fair value measurements
Remaining Level 3 investments increase	100
Other investments | Renewable energy partnership
Fair value measurements
Investment Tax Credit					$ 12,000
Equity investments	2,000			1,900
Investment cost						$ 14,400
Carrying Value
Fair value measurements
Long-term debt	394,000			366,500
Carrying Value | Other Assets | Equity Security
Fair value measurements
Investments	6,100			1,300
Increase due to gain recognized	4,800
Level 2 | Total
Fair value measurements
Long-term debt	$ 400,800			$ 373,700

LONG-TERM DEBT (Details)

LONG-TERM DEBT (Details) $ in Thousands

Jul. 22, 2021USD ($)

Apr. 10, 2019USD ($)

May 22, 2017

Mar. 31, 2022USD ($)

Mar. 31, 2021USD ($)

May 05, 2022

Dec. 31, 2021USD ($)

Mar. 26, 2020USD ($)

Dec. 31, 2017USD ($)

Jul. 31, 2017USD ($)

Dec. 31, 2016USD ($)

Jul. 01, 2016USD ($)

Long-term debt

Outstanding borrowings

$ 394,001

$ 366,544

Current portion of customer receivable credit facility

5,280

$ 4,620

Borrowings

8,000

$ 10,814

Repayment of credit facility

1,003

One Communications Debt

Long-term debt

Outstanding debt

3,800

One Communications Debt | Minimum | LIBOR

Long-term debt

Basis spread on variable rate (as a percent)

2.50%

One Communications Debt | Maximum | LIBOR

Long-term debt

Basis spread on variable rate (as a percent)

2.75%

Viya Debt

Long-term debt

Term loan assumed

$ 60,000

Net leverage ratio

3.5

Stated interest rate

4.00%

4.00%

Financing costs

$ 900

Intercompany debt limit

$ 51,600

Outstanding debt

60,000

Unamortized financing costs

400

Revolver loan | Credit facility

Long-term debt

Maximum borrowing capacity

$ 200,000

Remaining borrowing capacity

110,500

Net leverage ratio

3.25

Borrowings outstanding

71,500

Revolver loan | Credit facility | Minimum

Long-term debt

Commitment fee (as a percent)

0.15%

Net leverage ratio

1.75

Revolver loan | Credit facility | Minimum | LIBOR

Long-term debt

Basis spread on variable rate (as a percent)

1.25%

Revolver loan | Credit facility | Minimum | Base rate

Long-term debt

Basis spread on variable rate (as a percent)

0.25%

Revolver loan | Credit facility | Maximum

Long-term debt

Commitment fee (as a percent)

0.375%

Net leverage ratio

2.75

Revolver loan | Credit facility | Maximum | LIBOR

Long-term debt

Basis spread on variable rate (as a percent)

2.25%

Revolver loan | Credit facility | Maximum | Base rate

Long-term debt

Basis spread on variable rate (as a percent)

1.25%

Letter of credit sub-facility | Credit facility

Long-term debt

Maximum borrowing capacity

$ 75,000

Performance letters of credit issued and outstanding

18,000

Swingline sub-facility | Credit facility

Long-term debt

Maximum borrowing capacity

$ 10,000

Base rate before one-week or one-month LIBOR (as a percent)

1.00%

Swingline sub-facility | Credit facility | Federal Funds Effective Rate

Long-term debt

Basis spread on variable rate (as a percent)

0.50%

Term loans | Credit facility

Long-term debt

Maximum borrowing capacity

$ 200,000

Senior secured delayed draw term loan | Receivable credit facility

Long-term debt

Maximum borrowing capacity

$ 75,000

Remaining borrowing capacity

29,700

Outstanding borrowings

42,500

Current portion of customer receivable credit facility

5,300

Financing costs

900

Unamortized financing costs

700

Designated as cash flow hedges | Interest rate swap

Long-term debt

Notional amount

3,800

$ 11,000

Interest rate (as a percent)

1.874%

Subsequent event | Rural Telephone Finance Cooperative | Viya Debt

Long-term debt

Net leverage ratio

7

Alaska communications | Alaska credit facility

Long-term debt

Borrowings

$ 220,000

Principal amount

$ 283,000

Fixed charge coverage ratio

1.25

Net total leverage ratio

4

Consolidated EBITDA

12 months

Frequency of periodic payment

quarterly

Alaska communications | Alaska credit facility | Base rate

Long-term debt

Basis spread on variable rate (as a percent)

1.00%

Alaska communications | Alaska credit facility | Minimum | LIBOR

Long-term debt

Basis spread on variable rate (as a percent)

3.00%

Alaska communications | Alaska credit facility | Maximum | LIBOR

Long-term debt

Basis spread on variable rate (as a percent)

4.00%

Alaska communications | Alaska Term Loan

Long-term debt

Principal amount

$ 210,000

Alaska communications | Revolver loan

Long-term debt

Financing costs

6,600

Unamortized financing costs

5,600

Alaska communications | Revolver loan | Alaska credit facility

Long-term debt

Maximum borrowing capacity

35,000

Outstanding borrowings

13,000

Alaska communications | Revolver loan | Alaska Term Loan

Long-term debt

Outstanding borrowings

210,000

210,000

Alaska communications | Incremental term loans | Alaska credit facility | Minimum

Long-term debt

Maximum borrowing capacity

$ 70,000

Alaska communications | Designated as cash flow hedges | Interest rate swap

Long-term debt

Notional amount

$ 119,800

Interest rate (as a percent)

1.6735%

Period of fourth quarter of 2023 To third quarter 2024 | Alaska communications | Alaska credit facility

Long-term debt

Periodic payment, principal

$ 1,300

Debt Instrument, From Fourth Quarter of 2024 To Third Quarter of 2026 [Member] | Alaska communications | Alaska credit facility

Long-term debt

Periodic payment, principal

$ 2,600

Period of second quarter of 2024 | Alaska communications | Alaska credit facility

Long-term debt

Net total leverage ratio

3.75

GOVERNMENT SUPPORT AND SPECTR_3

GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS (Details) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2022USD ($)item	Mar. 31, 2021USD ($)	Sep. 30, 2020USD ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)item	Jul. 31, 2021USD ($)	Jun. 30, 2021USD ($)
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	$ 172,019	$ 124,510
Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	166,543	110,636
USF and CAF II Programs | Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	16,193	8,432
USF and CAF II Programs | US Telecom | Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	13,432	4,342
USF and CAF II Programs | International Telecom | Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	$ 2,761	4,090
Universal Service Fund programs
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Number of fund disbursement programs | item	4
High cost support program | Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	$ 3,817	4,401
High cost support program | US Telecom | Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	1,056	311
High cost support program | International Telecom | Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	2,761	4,090
CAF II | Grant receivable through December 2025
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Grants Receivable	27,700
CAF II | Grant receivable from January 2026 through July 2028
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Grants Receivable	8,000
CAF II | Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	6,822	1,899
CAF II | US Telecom | Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	6,822	1,899
Network Connectivity for Eligible Communities
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Cumulative Grant Fund Awards	28,300			$ 27,900
Grant funds awarded during the period	400
Grants cancelled	2,100
Construction obligation completed	15,000
Construction obligation yet to be completed	11,200
CARES Act
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Cumulative Grant Fund Awards					$ 16,300
Grant funds awarded during the period				2,400
Grant funds used to offset fixed asset related costs				18,400
Grant funds used to offset operating expenses				$ 300
CBRS Auction
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Initial term of licenses			10 years
Payment for PALs			$ 20,400
Other Programs | Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	5,554	2,132
Other Programs | US Telecom | Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	5,554	$ 2,132
Vija's annual USF support
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Grants Receivable						$ 10,900	$ 16,400
Vija's annual USF support | Grant Receivable June 2022 Through June 2023
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Grants Receivable	5,500
RDOF
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	$ 500
Grant funds expected to be awarded					$ 20,100
Grant fund term					10 years
Number of households to receive broadband coverage | item					10,000

RETIREMENT PLANS - Net Periodic

RETIREMENT PLANS - Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Jul. 22, 2021
Pension benefits
Components of the plan's net periodic pension cost
Service cost	$ 57	$ 54
Interest cost	565	572
Expected return on plan assets	(925)	(687)
Net periodic pension expense (benefit)	(303)	(61)
Funded status of plan
Projected benefit obligation			$ 15,400
Plan Net Assets			12,100
Postretirement benefits
Components of the plan's net periodic pension cost
Service cost	36	35
Interest cost	33	41
Net periodic pension expense (benefit)	$ 69	$ 76
Funded status of plan
Projected benefit obligation			$ 400

INCOME TAXES - Narrative (Detai

INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
INCOME TAXES
Effective tax rate (as a percent)	296.70%	6.50%
Income tax provision	$ 2,952	$ 295
INCOME BEFORE INCOME TAXES	995	4,571
Increase unrecognized tax benefits	500
Net expense to record the change in valuation allowance	$ 2,100
Interest on unrecognized tax position		$ 500

EARNINGS PER SHARE AND REDEEM_3

EARNINGS PER SHARE AND REDEEMABLE NONCONTROLLING INTERESTS - Computation of basic and diluted earnings per share (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net loss attributable to ATN International, Inc. stockholders	$ (948)	$ 2,706
Less: Preferred dividends	(1,116)
Net loss attributable to ATN International, Inc. common stockholders	$ (2,064)	$ 2,706
Denominator:
Weighted-average shares outstanding- Basic	15,708	15,902
Stock options, restricted stock units and performance stock units		50
Weighted-average shares outstanding- Diluted	15,708	15,952

EARNINGS PER SHARE AND REDEEM_4

EARNINGS PER SHARE AND REDEEMABLE NONCONTROLLING INTERESTS - Narrative (Details) - USD ($) $ in Thousands	Jul. 22, 2021	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Reconciliation from basic to diluted weighted average common shares outstanding
Redeemable noncontrolling interests		$ 74,052		$ 72,936
Redeemable Common Units
Reconciliation from basic to diluted weighted average common shares outstanding
Redeemable noncontrolling interests		22,640		22,640
Allocated losses		1,100
Increased book value		1,100
Redeemable Preferred Units
Reconciliation from basic to diluted weighted average common shares outstanding
Redeemable noncontrolling interests		51,412		$ 50,296
Unpaid dividend		3,100
Alaska communications | Redeemable Common Units
Reconciliation from basic to diluted weighted average common shares outstanding
Redeemable noncontrolling interests	$ 22,600	22,600
Fair value of common units		22,600
Alaska communications | Redeemable Preferred Units
Reconciliation from basic to diluted weighted average common shares outstanding
Redeemable noncontrolling interests	$ 48,300	48,300
Fair value of common units		$ 51,400
Percentage of preferred dividend	9.00%	9.00%
Stock options
Reconciliation from basic to diluted weighted average common shares outstanding
Stock options (in shares)		5,000	5,000

EARNINGS PER SHARE AND REDEEM_5

EARNINGS PER SHARE AND REDEEMABLE NONCONTROLLING INTERESTS - Rollforward (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)
Increase (decrease) in temporary equity
Beginning balance	$ 72,936
Accrued preferred dividend	1,116
Allocated net loss	(1,092)
Change in fair value	1,092
Ending balance	74,052
Redeemable Common Units
Increase (decrease) in temporary equity
Beginning balance	22,640
Allocated net loss	(1,092)
Change in fair value	1,092
Ending balance	22,640
Redeemable Preferred Units
Increase (decrease) in temporary equity
Beginning balance	50,296
Accrued preferred dividend	1,116
Ending balance	$ 51,412

SEGMENT REPORTING (Details)

SEGMENT REPORTING (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)segment	Mar. 31, 2021USD ($)	Dec. 31, 2021USD ($)
Segment reporting
Number of reportable segments | segment	3
Revenue
Revenue	$ 172,019	$ 124,510
Depreciation	33,292	20,111
Amortization of intangibles from acquisitions	3,258	397
Non-cash stock-based compensation	1,461	1,336
Operating income (loss)	108	3,349
Segment Assets
Cash, cash equivalents, and short term investments	76,048		$ 79,901
Total current assets	220,841		232,617
Fixed assets, net	933,875		943,209
Goodwill	40,104		40,104
Total assets	1,590,707		1,608,604
Total current liabilities	184,726		220,944
Total debt	394,001		366,544
Capital Expenditures
Capital expenditures	34,468	25,680
Communication services
Revenue
Revenue	166,543	110,636
Mobility
Revenue
Revenue	25,416	24,681
Mobility - Business
Revenue
Revenue	3,990	1,773
Mobility - Consumer
Revenue
Revenue	21,426	22,908
Fixed
Revenue
Revenue	104,460	65,118
Fixed - Business
Revenue
Revenue	44,399	19,330
Fixed - Consumer
Revenue
Revenue	60,061	45,788
Carrier services
Revenue
Revenue	36,391	20,619
Other communication services
Revenue
Revenue	276	218
Construction.
Revenue
Revenue	1,987	12,306
Other revenue
Revenue
Revenue	3,489	1,568
Renewable Energy
Revenue
Revenue		418
Managed Services
Revenue
Revenue	3,489	1,150
Corporate and Other
Revenue
Depreciation	953	1,301
Non-cash stock-based compensation	1,311	1,262
Operating income (loss)	(7,037)	(8,571)
Segment Assets
Cash, cash equivalents, and short term investments	5,957		7,628
Total current assets	2,858		8,614
Fixed assets, net	9,320		10,103
Total assets	81,819		83,567
Total current liabilities	16,079		20,548
Total debt	71,500		61,499
Capital Expenditures
Capital expenditures	203	235
International Telecom | Operating segments
Revenue
Revenue	86,787	83,820
Depreciation	13,897	13,429
Amortization of intangibles from acquisitions	418	397
Non-cash stock-based compensation	60	37
Operating income (loss)	11,803	13,116
Segment Assets
Cash, cash equivalents, and short term investments	40,101		43,128
Total current assets	105,551		108,677
Fixed assets, net	448,064		452,856
Goodwill	4,835		4,835
Total assets	623,497		630,515
Total current liabilities	80,857		91,090
Total debt	63,342		64,243
Capital Expenditures
Capital expenditures	15,170	10,506
International Telecom | Operating segments | Communication services
Revenue
Revenue	85,611	82,670
International Telecom | Operating segments | Mobility
Revenue
Revenue	23,586	21,821
International Telecom | Operating segments | Mobility - Business
Revenue
Revenue	3,616	1,197
International Telecom | Operating segments | Mobility - Consumer
Revenue
Revenue	19,970	20,624
International Telecom | Operating segments | Fixed
Revenue
Revenue	58,347	58,748
International Telecom | Operating segments | Fixed - Business
Revenue
Revenue	17,254	16,634
International Telecom | Operating segments | Fixed - Consumer
Revenue
Revenue	41,093	42,114
International Telecom | Operating segments | Carrier services
Revenue
Revenue	3,402	1,883
International Telecom | Operating segments | Other communication services
Revenue
Revenue	276	218
International Telecom | Operating segments | Other revenue
Revenue
Revenue	1,176	1,150
International Telecom | Operating segments | Managed Services
Revenue
Revenue	1,176	1,150
US Telecom | Operating segments
Revenue
Revenue	85,232	40,272
Depreciation	18,442	5,193
Amortization of intangibles from acquisitions	2,840
Non-cash stock-based compensation	90	15
Operating income (loss)	(4,635)	(534)
Segment Assets
Cash, cash equivalents, and short term investments	29,285		28,486
Total current assets	108,779		111,741
Fixed assets, net	476,491		480,250
Goodwill	35,269		35,269
Total assets	868,338		877,041
Total current liabilities	87,434		108,950
Total debt	259,159		240,802
Capital Expenditures
Capital expenditures	19,095	14,939
US Telecom | Operating segments | Communication services
Revenue
Revenue	80,932	27,966
US Telecom | Operating segments | Mobility
Revenue
Revenue	1,830	2,860
US Telecom | Operating segments | Mobility - Business
Revenue
Revenue	374	576
US Telecom | Operating segments | Mobility - Consumer
Revenue
Revenue	1,456	2,284
US Telecom | Operating segments | Fixed
Revenue
Revenue	46,113	6,370
US Telecom | Operating segments | Fixed - Business
Revenue
Revenue	27,145	2,696
US Telecom | Operating segments | Fixed - Consumer
Revenue
Revenue	18,968	3,674
US Telecom | Operating segments | Carrier services
Revenue
Revenue	32,989	18,736
US Telecom | Operating segments | Construction.
Revenue
Revenue	1,987	12,306
US Telecom | Operating segments | Other revenue
Revenue
Revenue	2,313
US Telecom | Operating segments | Managed Services
Revenue
Revenue	2,313
Renewable Energy | Operating segments
Revenue
Revenue		418
Depreciation		188
Non-cash stock-based compensation		22
Operating income (loss)	(23)	(662)
Segment Assets
Cash, cash equivalents, and short term investments	705		659
Total current assets	3,653		3,585
Total assets	17,053		17,481
Total current liabilities	$ 356		$ 356
Renewable Energy | Operating segments | Other revenue
Revenue
Revenue		418
Renewable Energy | Operating segments | Renewable Energy
Revenue
Revenue		$ 418

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	Oct. 05, 2020item	May 31, 2015USD ($)	Mar. 31, 2022USD ($)	Dec. 31, 2011USD ($)
Contingency related to spectrum fees
Commitments and contingencies
Spectrum fees paid				$ 2.6
Litigation proceedings and disputes in Guyana
Commitments and contingencies
Number of competitors issued service licenses | item	2
Legal claims regarding tax filings with the Guyana Revenue Authority
Commitments and contingencies
Future payments related to disputed tax assessments			$ 44.1
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%
Breach of contract allegations by TTEC
Commitments and contingencies
Amount awarded		$ 2.8
Pending litigation, adverse outcome
Commitments and contingencies
Accrued contingent liability			$ 13.3