ATN International (ATNI) 10-Q 9 Aug 21 2021 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Aug. 09, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2021
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, 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	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		15,864,072
Entity Central Index Key	0000879585
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Amendment Flag	false

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current Assets:
Cash and cash equivalents	$ 94,885	$ 103,925
Restricted cash	1,072	1,072
Accounts receivable, net of allowances for credit losses of $13.5 million and $12.1 million, respectively	40,644	44,152
Customer receivable	4,094	1,227
Inventory, materials and supplies	6,837	5,504
Prepayments and other current assets	52,313	49,450
Assets held for sale		34,735
Total current assets	199,845	240,065
Fixed Assets:
Property, plant and equipment	1,276,517	1,252,780
Less accumulated depreciation	(750,232)	(716,318)
Net fixed assets	526,285	536,462
Telecommunication licenses, net	114,083	114,083
Goodwill	60,690	60,691
Customer relationships, net	5,233	5,913
Operating lease right-of-use assets	62,287	63,235
Customer receivable - long term	28,333	9,614
Other assets	69,818	53,648
Total assets	1,066,574	1,083,711
Current Liabilities:
Current portion of long-term debt	3,750	3,750
Current portion of Customer receivable credit facility	2,335
Accounts payable and accrued liabilities	84,811	96,205
Dividends payable	2,707	2,703
Accrued taxes	7,496	7,501
Current portion of lease liabilities	12,871	12,371
Advance payments and deposits	22,602	24,681
Liabilities held for sale		717
Total current liabilities	136,572	147,928
Deferred income taxes	7,439	10,675
Lease liabilities, excluding current portion	51,306	51,082
Other liabilities	48,455	50,617
Customer receivable credit facility, net of current portion	14,322
Long-term debt, excluding current portion	67,294	69,073
Total liabilities	325,388	329,375
Commitments and contingencies (Note 14)
ATN International, Inc. Stockholders' Equity:
Preferred stock, $0.01 par value per share; 10,000,000 shares authorized, none issued and outstanding
Common stock, $0.01 par value per share; 50,000,000 shares authorized; 17,466,542 and 17,383,898 shares issued, respectively, 15,899,714 and 15,898,477 shares outstanding, respectively	172	172
Treasury stock, at cost; 1,566,828 and 1,485,421 shares, respectively	(63,388)	(59,456)
Additional paid-in capital	189,006	187,754
Retained earnings	516,208	516,901
Accumulated other comprehensive income	(72)	278
Total ATN International, Inc. stockholders' equity	641,926	645,649
Non-controlling interests	99,260	108,687
Total equity	741,186	754,336
Total liabilities and equity	$ 1,066,574	$ 1,083,711

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
CONDENSED CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowances (in dollars)	$ 13.5	$ 12.1
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	17,466,542	17,383,898
Common stock, shares outstanding	15,899,714	15,898,477
Treasury stock, shares	1,566,828	1,485,421

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
REVENUE:
Total revenue	$ 123,865	$ 109,098	$ 248,375	$ 220,004
OPERATING EXPENSES (excluding depreciation and amortization unless otherwise indicated):
Selling, general and administrative	40,652	34,125	78,344	68,552
Transaction-related charges	1,396	72	2,126	116
Depreciation and amortization	20,155	21,991	40,662	44,509
Loss on disposition of long-lived assets	743	49	861	64
Total operating expenses	120,960	102,074	242,121	205,680
Income from operations	2,905	7,024	6,254	14,324
OTHER INCOME (EXPENSE)
Interest income	46	66	40	309
Interest expense	(1,137)	(1,574)	(2,285)	(2,730)
Other income (expense)	(66)	590	2,309	(2,310)
Other income (expense), net	(1,157)	(918)	64	(4,731)
INCOME BEFORE INCOME TAXES	1,748	6,106	6,318	9,593
Income tax provisions	(1,542)	(2,258)	(1,247)	(1,149)
NET INCOME	3,290	8,364	7,565	10,742
Net income attributable to non-controlling interests, net of tax expense of $0.3 million, $0.2 million, $0.4 million, and $0.6 million, respectively.	(1,271)	(3,618)	(2,842)	(7,009)
NET INCOME ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS	$ 2,019	$ 4,746	$ 4,723	$ 3,733
NET INCOME PER WEIGHTED AVERAGE SHARE ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS:
Basic (in dollars per share)	$ 0.13	$ 0.30	$ 0.30	$ 0.23
Diluted (in dollars per share)	$ 0.13	$ 0.30	$ 0.30	$ 0.23
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	15,912	15,970	15,907	15,958
Diluted (in shares)	15,921	16,004	15,930	15,993
DIVIDENDS PER SHARE APPLICABLE TO COMMON STOCK	$ 0.17	$ 0.17	$ 0.34	$ 0.34
Communication services
REVENUE:
Total revenue	$ 112,964	$ 106,240	$ 223,599	$ 214,145
OPERATING EXPENSES (excluding depreciation and amortization unless otherwise indicated):
Cost of services	48,479	45,837	97,986	92,439
Other
REVENUE:
Total revenue	10,901	$ 2,858	24,776	$ 5,859
Construction
OPERATING EXPENSES (excluding depreciation and amortization unless otherwise indicated):
Cost of services	$ 9,535		$ 22,142

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Noncontrolling interest income tax expense	$ 0.3	$ 0.2	$ 0.4	$ 0.6

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income	$ 3,290	$ 8,364	$ 7,565	$ 10,742
Other comprehensive income (loss):
Foreign currency translation adjustment	(370)	1,782	(410)	(2,644)
Unrealized gain (loss) on derivatives	29	8	60	(168)
Other comprehensive income (loss), net of tax	(341)	1,790	(350)	(2,812)
Comprehensive income	2,949	10,154	7,215	7,930
Less: Comprehensive income attributable to non-controlling interests	(1,271)	(3,618)	(2,842)	(7,009)
Comprehensive income attributable to ATN International, Inc.	$ 1,678	$ 6,536	$ 4,373	$ 921

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total ATNI Stockholders' Equity	Common Stock	Treasury Stock, at cost	Additional Paid In Capital	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)	Non-Controlling Interests	Total
Balance, beginning of period at Dec. 31, 2019	$ 676,122	$ 172	$ (51,129)	$ 188,471	$ 541,890	$ (3,282)	$ 129,961	$ 806,083
Increase (Decrease) in Stockholders' Equity
Purchase of shares of common stock	(4,187)		(4,187)					(4,187)
Stock-based compensation	2,614			2,614			107	2,721
Dividends declared on common stock	(5,440)				(5,440)		(5,553)	(10,993)
Repurchase of non-controlling interests	(1,300)			(1,300)			(2,611)	(3,911)
Comprehensive income:
Net income (loss)	3,733				3,733		7,009	10,742
Other comprehensive income (loss)	(2,812)					(2,812)		(2,812)
Comprehensive income	921						7,009	7,930
Balance, end of period at Jun. 30, 2020	668,730	172	(55,316)	189,785	540,183	(6,094)	128,913	797,643
Balance, beginning of period at Mar. 31, 2020	665,758	172	(54,358)	189,667	538,161	(7,884)	127,321	793,079
Increase (Decrease) in Stockholders' Equity
Purchase of shares of common stock	(958)		(958)					(958)
Stock-based compensation	1,418			1,418			131	1,549
Dividends declared on common stock	(2,724)				(2,724)		(1,321)	(4,045)
Repurchase of non-controlling interests	(1,300)			(1,300)			(836)	(2,136)
Comprehensive income:
Net income (loss)	4,746				4,746		3,618	8,364
Other comprehensive income (loss)	1,790					1,790		1,790
Comprehensive income	6,536						3,618	10,154
Balance, end of period at Jun. 30, 2020	668,730	172	(55,316)	189,785	540,183	(6,094)	128,913	797,643
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	(3,932)		(3,932)					(3,932)
Stock-based compensation	3,413			3,413			98	3,511
Dividends declared on common stock	(5,416)				(5,416)		(2,488)	(7,904)
Repurchase of non-controlling interests	(2,161)			(2,161)			(10,208)	(12,369)
Investments made by minority shareholders in consolidated affiliates							329	329
Comprehensive income:
Net income (loss)	4,723				4,723		2,842	7,565
Other comprehensive income (loss)	(350)					(350)		(350)
Comprehensive income	4,373						2,842	7,215
Balance, end of period at Jun. 30, 2021	641,926	172	(63,388)	189,006	516,208	(72)	99,260	741,186
Balance, beginning of period at Mar. 31, 2021	642,591	172	(61,677)	186,930	516,897	269	99,678	742,269
Increase (Decrease) in Stockholders' Equity
Purchase of shares of common stock	(1,711)		(1,711)					(1,711)
Stock-based compensation	2,150			2,150			25	2,175
Dividends declared on common stock	(2,708)				(2,708)		(958)	(3,666)
Repurchase of non-controlling interests	(74)			(74)			(1,085)	(1,159)
Investments made by minority shareholders in consolidated affiliates							329	329
Comprehensive income:
Net income (loss)	2,019				2,019		1,271	3,290
Other comprehensive income (loss)	(341)					(341)		(341)
Comprehensive income	1,678						1,271	2,949
Balance, end of period at Jun. 30, 2021	$ 641,926	$ 172	$ (63,388)	$ 189,006	$ 516,208	$ (72)	$ 99,260	$ 741,186

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
CONDENSED CONSOLIDATED STATEMENTS OF EQUITY
Purchase of shares of common stock	37,428	17,854	81,406	80,746
Dividends declared on common stock (dollars per per share)	$ 0.17	$ 0.17	$ 0.34	$ 0.34

CONDENSED CONSOLIDATED STATEM_6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income	$ 7,565	$ 10,742
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization	40,662	44,509
Provision for doubtful accounts	2,299	3,397
Amortization of debt discount and debt issuance costs	337	260
Stock-based compensation	3,511	2,721
Deferred income taxes	(3,236)	(3,204)
(Gain) loss on equity investments	(1,793)	1,412
Loss on disposition of long-lived assets	861	64
Unrealized (gain) loss on foreign currency	(81)	780
Changes in operating assets and liabilities, excluding the effects of acquisitions and dispositions:
Accounts receivable	1,226	(14,475)
Customer receivable	(21,586)
Materials and supplies, prepayments, and other current assets	(73)	(7,313)
Prepaid income taxes		399
Accounts payable and accrued liabilities, advance payments and deposits and other current liabilities	(1,745)	2,497
Accrued taxes	(1,360)	(1,838)
Other assets	782	993
Other liabilities	91	(569)
Net cash provided by operating activities	27,460	40,375
Cash flows from investing activities:
Capital expenditures	(35,424)	(30,597)
Reimbursable capital expenditures	(6,508)	(1,368)
Receipt of capital government grants	3,292
Divestiture of businesses, net of transferred cash of $0.9 million	18,597
Purchase of intangible assets; including deposits		(20,000)
Purchases of strategic investments	(5,242)	(2,768)
Net cash used in investing activities	(25,285)	(54,733)
Cash flows from financing activities:
Dividends paid on common stock	(5,411)	(5,443)
Distributions to non-controlling interests	(4,488)	(5,541)
Repayment of customer receivable credit facility	(384)
Payment of debt issuance costs		(1,059)
Principal repayments of term loan	(1,883)	(1,876)
Purchases of common stock - stock-based compensation	(1,713)	(1,733)
Purchases of common stock - share repurchase plan	(2,219)	(2,449)
Repurchases of non-controlling interests	(12,699)	(3,911)
Proceeds from customer receivable credit facility	17,582
Net cash used in financing activities	(11,215)	(22,012)
Effect of foreign currency exchange rates on cash and cash equivalents		(118)
Net change in cash, cash equivalents, and restricted cash	(9,040)	(36,488)
Total cash, cash equivalents, and restricted cash, beginning of period	104,997	162,358
Total cash, cash equivalents, and restricted cash, end of period	95,957	125,870
Noncash investing activity:
Purchases of property, plant and equipment included in accounts payable and accrued expenses	$ 11,990	$ 7,715

CONDENSED CONSOLIDATED STATEM_7

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) $ in Millions	6 Months Ended
	Jun. 30, 2021USD ($)
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net of transferred cash	$ 0.9

ORGANIZATION AND BUSINESS OPERA

ORGANIZATION AND BUSINESS OPERATIONS	6 Months Ended
	Jun. 30, 2021
ORGANIZATION AND BUSINESS OPERATIONS
ORGANIZATION AND BUSINESS OPERATIONS	1. ORGANIZATION AND BUSINESS OPERATIONS ​ The Company strives to be a leading platform for the operation of, and investment in, smaller and specialty market communications services and technology companies. The Company has a long track record of delivering critical infrastructure-based solutions to rural and historically underserved markets. The Company’s majority-owned operating subsidiaries provide facilities-based communications services, along with related information technology solutions, in the United States, Bermuda, and the Caribbean. The Company also has non-controlling investments in a renewable energy company and several communications and technology companies, and it continues to consider opportunities to make controlling and minority investments in businesses that it believes have the potential for generating substantial and relatively steady cash flows over extended periods of time or have technologies or business models that might prove valuable to the Company’s main operating subsidiaries or create significant longer term growth potential for the Company as a whole. ​ 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. Over the past ten years, the Company has built a platform of resources and expertise to support its operating subsidiaries and to improve their quality of service, and customer acquisition, retention, and satisfaction while maintaining optimal operating efficiencies. The Company has a number of shared service functions, including billing, network and engineering and customer service, and also employs personnel with specialized skills that provide greater economies of scale and expertise than would typically be available at the operating subsidiary level. ​ The Company was incorporated in Delaware in 1987, began trading publicly in 1991 and spun off more than half of its operations to stockholders in 1998. The Company actively evaluates potential acquisitions, investment opportunities and other strategic transactions, both domestic and international, and generally looks for those that it believes have the potential for generating steady excess cash flows over extended periods of time. In addition, the Company considers non-controlling investments in earlier stage businesses that it considers strategically relevant, and which may offer long-term growth potential for us, either individually, or as research and development businesses that can support the Company’s operating subsidiaries in new technology, product, and service development and offerings. The Company has used the cash generated from its established operating units, and any asset sales, to re-invest in its existing businesses, to make strategic investments in additional businesses, and to return cash to the Company’s investors. The Company provides management, technical, financial, regulatory, and marketing services to its subsidiaries and typically receives a management fee calculated as a percentage of their revenues, which is eliminated in consolidation. 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. ​ ​ Through June 30, 2021, the Company had identified three operating segments to manage and review its operations and to facilitate investor presentations of its results. These three operating segments are as follows: ​ ● International Telecom. Businesses contained in the Company’s international telecom segment offer a mix of fixed data, internet and voice services (“Fixed”) as well as retail mobility (“Mobility”) services to customers in Bermuda, the Cayman Islands, Guyana and the US Virgin Islands. The Company offers fixed video services in Bermuda, the Cayman Islands, and the US Virgin Islands and managed information technology services (“Managed Services”) to enterprise customers in all its markets. The Company also offers services to other telecom providers (“Carrier Services”), such as international long-distance, transport and access services, and roaming from such telecom providers’ customers traveling in its network service areas. ​ ● US Telecom. In the United States, primarily in the Southwest, the Company offers Carrier Services, including wholesale roaming services, the leasing of critical network infrastructure such as towers and transport facilities, and site maintenance. The Company also provides Fixed, Mobility, and Managed Services to its retail and enterprise customers, and private network services to enterprise customers, municipalities and other service providers. ​ ● Renewable Energy. In India, the Company provided distributed generation solar power to commercial and industrial customers through January 27, 2021. See Sale of Renewable Energy Operations 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 June 30, 2021: ​ ​ ​ ​ ​ ​ ​ ​ Segment Services Markets Tradenames International Telecom Mobility Bermuda, Guyana, US Virgin Islands One, GTT+, Viya ​ Fixed 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 United States (rural markets) Choice, Choice NTUA Wireless, Geoverse ​ ​ Fixed ​ United States ​ Commnet, Choice, Choice NTUA Wireless, Deploycom ​ ​ Carrier Services ​ United States ​ Commnet, Essextel ​ Managed Services United States Choice Renewable Energy (1) ​ Solar ​ India ​ Vibrant Energy ​ (1) See Sale of Renewable Energy Operations 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. ​ ​ COVID-19 ​ The Company is continuing 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 and any potential impact on its revenue in 2021. ​ The preparation of the condensed consolidated financial statements requires the Company to make estimates, judgments and assumptions that may affect the reported amounts of assets, liabilities, equity, revenues and expenses and related disclosure of contingent assets and liabilities. On an ongoing basis, the Company evaluates estimates, judgments and methodologies. 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 it and the unknown future impacts COVID-19 as of June 30, 2021 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. ​ The Company assessed the impacts of COVID-19 on its consolidated financial statements as of and for the three and six months ended June 30, 2021, in particular, the impacts on revenues, operating expenses and cash flows. During the three and six months ended June 30, 2021, the International Telecom segment experienced an increase in its Mobility, Fixed and Carrier Services revenue as certain pandemic-related travel and stay-at-home restrictions were lifted during the latter half of the three months ended June 30, 2021 which allowed for the reopening of many retail stores in all of the Company’s international markets and an increase in tourism in certain markets. Expenses within the Company’s International Telecom segment increased as a result of the increased demand for its products and services and as a result of certain expenses, such as facility and utility costs, being incurred during the three and six months ended June 30, 2021 that were not incurred during the same periods of 2020. Within the US Telecom segment, the Company experienced an increase in revenue during the three and six months ended June 30, 2021, for its rural broadband services to further support the demand, which has been increased by the impact of COVID-19, for remote working and connectivity. Similar to the International Telecom segment, the US Telecom segment recorded an increase in expenses associated with the increased demand for its products and services as well as the recording certain expenses that were incurred during the three and six months ended June 30, 2021 that were not incurred during the same periods of 2020. ​ As a result, the Company’s assessment did not indicate that there was a material adverse impact to its consolidated financial statements as of and for the three and six months ended June 30, 2021. However, future assessments of the impacts of COVID-19 for the remainder of 2021, as well as other factors, including the possible reinstatement of certain COVID-19 travel-related and stay-at-home restrictions, could result in material adverse impacts to the Company’s consolidated financial statements in future reporting periods. For example, the local economies of many of the Caribbean markets are tourism-dependent and a decline in global travel activity resulting from reinstated COVID-19 restrictions may adversely impact revenue and cash flows for certain services in these markets. Further, the Company may experience difficulty in procuring network or retail equipment, such as handsets for subscribers, if such COVID-19 restrictions are reinstated. Apart from possible government issued travel restrictions, the Company currently cannot assess how COVID-19 may influence subscribers’ procurement behavior for services or how that behavior will impact revenues in the foreseeable future.

BASIS OF PRESENTATION

BASIS OF PRESENTATION	6 Months Ended
	Jun. 30, 2021
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, 2020, filed with the SEC on March 1, 2021. ​ 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 January 1, 2020, the Company changed its presentation of revenue in the Condensed Consolidated Statement of Operations and in the Selected Segment Financial Information tables. This change is intended to better align the Company’s financial performance with the views of management and industry competitors, and to facilitate a more constructive dialogue with the investment community. ​ Specifically, the previously disclosed revenue categories of wireless and wireline revenue are being represented as Mobility, Fixed and Carrier Services revenue within the Company’s segment information and are included within communications services revenue within its Statements of Operations. Managed services revenue, which was previously a component of wireline revenue, along with revenue from the Company’s Renewable Energy operations, is now included in other revenue. Construction revenue is also included as a component of other revenue. ​ Presentation of Operating Expenses ​ Effective January 1, 2021, the Company changed its presentation of operating expenses in the Condensed Consolidated Statement of Operations by combining the previously disclosed Termination and Access Fees with Engineering and Operations as the newly represented Cost of Services. 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 June 2016, the FASB issued ASU 2016-13, “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). ASU 2016-13 requires entities to use a new forward-looking, expected loss model to estimate credit losses. It also requires additional disclosure relating to the credit quality of trade and other receivables, including information relating to management’s estimate of credit allowances. The Company adopted ASU 2016-13 using the modified retrospective approach on its January 1, 2020 effective date. Refer to Note 3 of the Condensed Consolidated Financial Statements in this Report. ​ On December 18, 2019, the FASB issued new guidance that simplifies the accounting for income taxes. Amendments include the removal of certain exceptions to the general principles of ASC 740, Income taxes. The Company adopted this guidance in 2021 using a prospective method. The adoption of this guidance did not have a material impact on the Company’s consolidated financial statements; however, the impact in future periods will be dependent on the extent of future events and circumstances. ​ ​

REVENUE RECOGNITION AND RECEIVA

REVENUE RECOGNITION AND RECEIVABLES	6 Months Ended
	Jun. 30, 2021
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 retail wireless contracts with both a multiyear service period and a promotional discount. In these contracts the revenue recognized exceeds the amount billed to the customer. The current portion of the contract asset is recorded in prepayments and other current assets and the noncurrent portion is included in other assets on the Company’s balance sheets. ​ Contract liabilities consist of advance payments and billings in excess of revenue recognized. Retail revenue for postpaid customers is generally billed one month in advance and recognized over the period that the corresponding service is rendered to customers. To the extent the service is not provided by the reporting date the amount is recognized as a contract liability. Prepaid service, including mobile voice and data services, sold to customers is recorded as deferred revenue prior to the commencement of services. Contract liabilities are recorded in advanced payments and deposits on 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 Southwestern 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 wholesale 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) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2021 ​ December 31, 2020 ​ ​ $ Change ​ % Change Contract asset – current $ 3,536 ​ $ 2,478 ​ $ 1,058 ​ 43 % Contract asset – noncurrent ​ 916 ​ ​ 910 ​ ​ 6 ​ 1 % Contract liability – current ​ (15,332) ​ ​ (18,544) ​ ​ 3,212 ​ 17 % Contract liability – noncurrent ​ (2,125) ​ ​ (2,193) ​ ​ 68 ​ 3 % Net contract liability $ (13,005) ​ $ (17,349) ​ $ 4,344 ​ 25 % ​ 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 the FirstNet Transaction. During the six months ended June 30, 2021, the Company recognized revenue of $18.2 million related to its December 31, 2020 contract liability and amortized $1.4 million of the December 31, 2020 contract asset into revenue. The Company did no t recognize any revenue in the six months ended June 30, 2021 related to performance obligations that were satisfied or partially satisfied in previous periods. ​ Contract Acquisition Costs ​ The June 30, 2021 balance sheet includes current contract acquisition costs of $2.1 million in prepayments and other current assets and long term contract acquisition costs of $1.4 million in other assets. During the three and six months ended June 30, 2021, the Company amortized $0.6 million and $1.2 million, respectively, of contract acquisition costs. During the three and six months ended June 30, 2020, the Company amortized $0.5 million and $1.0 million, respectively, of contract acquisition costs. ​ Remaining Performance Obligations ​ Remaining performance obligations represent the transaction price allocated to unsatisfied performance obligations of certain multiyear retail wireless contracts, which include a promotional discount, and the Company’s construction and service contracts. The transaction price allocated to unsatisfied performance obligations was $249 million and $299 million at June 30, 2021 and December 31, 2020, respectively. The Company expects to satisfy approximately 60% of the remaining performance obligations and recognize the transaction price as revenue within 24 months and the remainder thereafter. ​ The Company has certain retail, wholesale, and renewable energy 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 and Other revenue. Communication Services revenue is further disaggregated into Mobility, Fixed, Carrier Services, and Other services. Other revenue is further disaggregated into Renewable Energy, Managed Services and Construction 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 adopted ASU 2016-13 on January 1, 2020. The standard requires that certain financial assets be measured at amortized cost reflecting an allowance for estimated credit losses expected to occur over the life of the assets. The estimate of credit losses is based on all relevant information including historical information, current conditions, and reasonable and supportable forecasts that affect the collectability of the amounts. The Company adopted ASU 2016-13 using the modified retrospective approach, however, there was no impact of adoption on retained earnings. ​ The standard impacted the Company’s calculation of credit losses from trade receivables. Historically, the Company recorded credit losses subsequent to the initial revenue transaction. After adoption of ASU 2016-13, the Company will record 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. Our allowance for uncollectible accounts receivable is based on management’s assessment of the collectability of assets pooled together with similar risk characteristics. There was no significant impact to the Company’s operating results due to the adoption of this standard. ​ At June 30, 2021, the Company had gross accounts receivable of $86.6 million and an allowance for credit losses of $13.5 million. The receivable under the FirstNet Agreement totaled $32.4 million of which $4.1 million was current and $28.3 million was long-term. At December 31, 2020, the Company had gross accounts receivable of $67.1 million and an allowance for credit losses of $12.1 million. The receivable under the FirstNet Agreement totaled $10.8 million of which $1.2 million was current and $9.6 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: ​ ​ ​ ​ ​ ​ ​ ​ ​ Six months ended June 30, 2021 ​ Six months ended June 30, 2020 ​ ​ ​ ​ ​ ​ ​ Balance at beginning of period $ 12,121 ​ $ 12,724 Current period provision for expected losses ​ 2,299 ​ ​ 3,397 Write-offs charged against the allowance ​ (1,196) ​ ​ (4,875) Recoveries collected ​ ​ 267 ​ ​ 354 Balance at end of period ​ $ 13,491 ​ $ 11,600 ​

LEASES

LEASES	6 Months Ended
	Jun. 30, 2021
LEASES
LEASES	4. LEASES ​ 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 June 30, 2021 ​ Three months ended June 30, 2020 ​ Six months ended June 30, 2021 ​ Six months ended June 30, 2020 Operating lease cost: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating lease cost $ 4,248 ​ $ 4,029 ​ $ 8,473 ​ $ 8,076 Short-term lease cost ​ 729 ​ ​ 729 ​ ​ 1,137 ​ ​ 1,271 Variable lease cost ​ 1,016 ​ ​ 1,540 ​ ​ 2,080 ​ ​ 2,343 Total operating lease cost $ 5,993 ​ $ 6,298 ​ $ 11,690 ​ $ 11,690 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Finance lease cost: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortization of right-of-use asset $ 615 ​ $ 522 ​ $ 1,190 ​ $ 1,094 Variable costs ​ 197 ​ ​ 186 ​ ​ 392 ​ ​ 458 Total finance lease cost $ 812 ​ $ 708 ​ $ 1,582 ​ $ 1,552 ​ During the six month periods ended June 30, 2021 and 2020, the Company paid $7.6 million and $7.2 million, respectively, for operating lease liabilities. During the six months ended June 30, 2021 and 2020, the Company recorded ​ At June 30, 2021, finance leases with a cost of $26.7 million and accumulated amortization of $10.7 million were included in property, plant and equipment. During the six months ended June 30, 2021, the Company paid $0.5 million for finance lease liabilities and recorded $1.4 million of additional finance lease liabilities. At June 30, 2021, finance leases had a lease liability of $2.1 million, of which $0.4 million was current. At December 31, 2020, finance leases with a cost of $25.4 million and accumulated amortization of $9.5 million were included in property, plant and equipment. ​ The weighted average remaining lease terms and discount rates as of June 30, 2021 and December 31, 2020 are noted in the table below: ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2021 ​ December 31, 2020 Weighted-average remaining lease term ​ ​ ​ ​ ​ Operating leases ​ 5.7 years ​ ​ 5.9 years Financing leases ​ 10.5 years ​ ​ 10.9 years ​ ​ ​ ​ ​ ​ Weighted-average discount rate ​ ​ ​ ​ ​ Operating leases ​ 4.8% ​ ​ 5.0% Financing leases ​ 4.3% ​ ​ 3.3% ​ Maturities of lease liabilities as of June 30, 2021 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Financing Leases 2021 (excluding the six months ended June 30, 2021) $ 8,184 ​ $ 251 2022 ​ 15,243 ​ ​ 501 2023 ​ 12,846 ​ ​ 501 2024 ​ 11,702 ​ ​ 383 2025 ​ 8,800 ​ ​ 285 Thereafter ​ 14,599 ​ ​ 522 Total lease payments ​ 71,374 ​ ​ 2,443 Less imputed interest ​ (9,323) ​ ​ (317) Total $ 62,051 ​ $ 2,126 ​ Maturities of lease liabilities as of December 31, 2020 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Financing Leases 2021 $ 14,877 ​ $ 334 2022 ​ 14,202 ​ ​ 333 2023 ​ 11,799 ​ ​ 333 2024 ​ 10,633 ​ ​ 211 2025 ​ 7,816 ​ ​ - Thereafter ​ 13,094 ​ ​ - Total lease payments ​ 72,421 ​ ​ 1,211 Less imputed interest ​ (10,097) ​ ​ (82) Total $ 62,324 ​ $ 1,129 ​ As of June 30, 2021, the Company did not have any material operating or finance leases that have not yet commenced.

USE OF ESTIMATES

USE OF ESTIMATES	6 Months Ended
	Jun. 30, 2021
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	6 Months Ended
	Jun. 30, 2021
ACQUISITIONS AND DISPOSITIONS
ACQUISITIONS AND DISPOSITIONS	6. ACQUISITIONS AND DISPOSITIONS ​ US Telecom Acquisition of Alaska Communications ​ See Note 15 . ​ 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 and the assets and liabilities subject to the Vibrant Transaction were reported as held for sale at December 31, 2020. The Company recorded transaction costs of million was recorded during the six months ended June 30, 2021. The consideration received includes ownership interest in Vibrant. The Company is finalizing working capital adjustments and the purchase price escrow will be held in escrow for a period of 12 months after the closing to secure the Company’s indemnification obligations. During the six months ended June 20, 2021, the Company recorded additional losses of million related the ongoing working capital 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	6 Months Ended
	Jun. 30, 2021
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 June 30, 2021 and December 31, 2020 are summarized as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2021 ​ ​ Significant Other ​ ​ Quoted Prices in ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Active Markets ​ Inputs ​ Inputs ​ ​ ​ Description ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ Total Certificates of deposit ​ $ — ​ $ 380 ​ $ — ​ $ 380 Money market funds ​ ​ 3,134 ​ ​ — ​ ​ — ​ ​ 3,134 Other investments ​ ​ — ​ ​ — ​ ​ 2,016 ​ ​ 2,016 Interest rate swap ​ ​ — ​ ​ (97) ​ ​ — ​ ​ (97) Total assets and liabilities measured at fair value ​ $ 3,134 ​ $ 283 ​ $ 2,016 ​ $ 5,433 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ Significant Other ​ ​ Quoted Prices in ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Active Markets ​ Inputs ​ Inputs ​ ​ ​ Description ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ Total Certificates of deposit ​ $ — ​ $ 380 ​ $ — ​ $ 380 Money market funds ​ ​ 2,785 ​ ​ — ​ ​ — ​ ​ 2,785 Other investments ​ ​ — ​ ​ — ​ ​ 13,357 ​ ​ 13,357 Interest rate swap ​ ​ — ​ ​ (157) ​ ​ — ​ ​ (157) Total assets and liabilities measured at fair value ​ $ 2,785 ​ $ 223 ​ $ 13,357 ​ $ 16,365 ​ During the six months ended June 30, 2021, other investments measured using Level 3 inputs decreased $11.3 million. The decrease was the result of transferring $11.0 million out of Level 3 due to the conversion of a convertible debt instrument. At December 31, 2020, the Company accounted for a convertible debt instrument at fair value. During the six months ended June 30, 2021, that instrument was converted to equity and the Company began accounting for the investment under the cost method of accounting. Refer to Other Investments below. Also, during the six months ended June 30, 2021, the fair value of the remaining Level 3 investments decreased $0.3 million due to $0.5 million of cash distributions and $0.2 million of income recognized in the other income line of the Company’s statement of operations. ​ Certificate of Deposit ​ As of June 30, 2021 and December 31, 2020 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 June 30, 2021 and December 31, 2020, 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 June 30, 2021, and $2.3 million at December 31, 2020. 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. During the six months ended June 30, 2021, the Company recorded a gain of $2.5 million on the conversion and invested an additional $3.0 million of cash, increasing its book value from $11.0 million at December 31, 2020 to $16.5 million at June 30, 2021. The Company also holds investments in equity securities consisting of non-controlling investments in privately held companies. These investments, over which the Company does not have the ability to exercise significant influence, are without readily determinable fair values. The investments are measured at cost, less any impairment, adjusted for observable price changes of similar investments of the same issuer. Fair value is not estimated for these investments if there are no identified events or changes in circumstances that may have an effect on the fair value of the investment. The carrying value of the investments was $1.3 million at June 30, 2021, unchanged from December 31, 2020. 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 June 30, 2021 and December 31, 2020, respectively. The value decreased 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 increased from $11.8 million to $12.9 million at June 30, 2021. The increase of $1.1 million was due to currency losses of $0.2 million, an additional investment of $1.6 million into its operations, and a distribution of $0.3 million to a minority investment partner. ​ 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 and the customer receivable credit facility is estimated using Level 2 inputs. At June 30, 2021, the fair value of long-term debt and the customer receivable credit facility, including the current portion, was million. At December 31, 2020, the fair value of long-term debt, including the current portion, was

LONG-TERM DEBT

LONG-TERM DEBT	6 Months Ended
	Jun. 30, 2021
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 $16.0 million of performance letters of credit have been issued and remain outstanding and undrawn as of June 30, 2021. 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 June 30, 2021, the Company was in compliance with all of the financial covenants, had no outstanding borrowings and, net of the $16.0 million of outstanding performance letters of credit, had $184.0 million of availability under the 2019 CoBank Credit Facility. On July 20, 2021, and in connection with the Alaska Transaction, the Company drew $73.0 million from its 2019 CoBank Credit Facility . ​ Alaska Credit Facility ​ On July 22, 2021, Alaska Communications entered into a new credit facility to provide debt financing associated with the Alaska Transaction. See Note 15 . ​ 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. The delayed draw period will expire on December 31, 2021. ​ 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 rate based on (i) LIBOR plus 2.50%, (ii) a base rate plus 1.50% or (iii) a fixed annual interest rate to be quoted by CoBank. If the Company selects a variable interest rate option, the Company is required to enter an interest rate swap fixing the interest rate. 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 June 30, 2021, the Company had $17.2 million outstanding, of which $2.3 million was current, and $57.4 million of availability under the Receivables Credit Facility. The Company capitalized $0.9 million of fees associated with the Receivables Credit Facility which are being amortized over the life of the debt and $0.8 million were unamortized at June 30, 2021. 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 the Company’s Viya subsidiaries and is guaranteed by the Company. 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 with a $75.0 million limit. The Company was not in compliance with the Net Leverage Ratio covenant of the Viya Debt agreement for the year ending December 31, 2020 and received a waiver from the RTFC on February 25, 2021. ​ 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 June 30, 2021, $60.0 million of the Viya Debt remained outstanding and $0.5 million of the rate lock fee was unamortized. ​ 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 was in compliance with its covenants as of December 31, 2020. As a condition of the One Communications Debt, the Company was required to enter into a hedging arrangement with a notional amount equal to at least 30% of the outstanding loan balance and a term corresponding to the term of the One Communications Debt. As such, the Company entered into an amortizing interest rate swap that has been designated as a cash flow hedge, which had an original notional amount of $11.0 million, has an interest rate of 1.874%, and expires in March 2022. As of June 30, 2021, the swap had an unamortized notional amount of $6.8 million. The Company capitalized $0.3 million of fees associated with the One Communications Debt which are being amortized over the life of the debt and are recorded as a reduction to the debt carrying amount. As of June 30, 2021, $11.6 million of the One Communications Debt was outstanding and $0.1 million of the capitalized fees remained unamortized. ​

GOVERNMENT GRANTS

GOVERNMENT GRANTS	6 Months Ended
	Jun. 30, 2021
GOVERNMENT GRANTS
GOVERNMENT GRANTS	9. GOVERNMENT GRANTS ​ Universal Service Fund ​ The Federal Universal Service Fund (“USF”) is a subsidy program managed by the Federal Communications Commission (“FCC”). USF funds are disbursed to telecommunication providers through programs: the High Cost Program; Low Income Program (“Lifeline Program”); Schools and Libraries Program (“E-Rate Program”); and Rural Health Care Support Program. The Company participates in the High Cost Program, Lifeline Program, E-Rate Program, and Rural Health Care Support Program as further described below. All of these funding programs are subject to certain operational and reporting compliance requirements. The Company believes it is in compliance with all applicable requirements. ​ During the three and six month periods ended June 30, 2021, the Company recorded $4.3 million and $8.4 million, respectively, of revenue from the High Cost Program in its International Telecom segment for its US Virgin Islands operations under the “Viya” name. During the three and six month periods ended June 30, 2020, the Company recorded $4.1 million and $8.2 million, respectively, from the same program. 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 begin payment to the awardee in June 2021. Pursuant to the terms of the program, Viya’s USF support will be reduced, to two -thirds of the legacy total amount, or $10.9 million, during the first year following the finalization of the award and to one -third of the legacy total amount, or $5.5 million, during the second year. Thereafter, Viya will not receive High Cost Program support. ​ Also, during each of the three and six month periods ended June 30, 2021, the Company recorded $0.3 million and $0.6 million, respectively, of High Cost Program revenue in its US Telecom segment. During the three and six month periods ended June 30, 2020, the Company recorded million, respectively, from the same program. The Company is subject to certain operational, reporting and construction requirements as a result of this funding, and the Company believes that it is in compliance with all of these requirements. ​ In August 2018, the Company was awarded $79.9 million over 10 years under the Connect America Fund Phase II Auction. Under this program, the Company is required to provide fixed broadband and voice services to certain eligible areas in the United States and is subject to operational and reporting requirements. The Company determined the award is a revenue grant, and as a result the Company will record the funding as revenue upon receipt. For the three and six month periods ended June 30, 2021, the Company recorded $1.9 million and $3.8 million, respectively, from the Connect America Fund Phase II program. For the three and six month periods ended June 30, 2020, the Company recorded $1.9 million and $3.8 million, respectively, from the same program. ​ million of such grants. The Company was awarded million of additional grants in the six months ended June 30, 2021. The Company has completed its construction obligations on million of such construction obligations remain with completion deadlines beginning in September 2021. Once these projects are constructed, the Company is obligated to provide service to the participants. The Company receives funds upon construction completion. The Company received ​ The Company also receives funding to provide discounted telecommunication services to eligible customers under the E-Rate Program, Lifeline Program, and Rural Health Care Support Program. During the three and six months ended June 30, 2021, the Company recorded revenue of million, respectively, in the aggregate from these programs. During the three and six months ended June 30, 2020, the Company recorded revenue of million, respectively, in the aggregate from these programs. The Company is subject to certain operational and reporting requirements under the above mentioned programs and it believes that it is in compliance with all of these requirements. ​ CARES Act ​ million of funding under the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”). During the six months ended June 30, 2021, the Company received an additional million of funding. In total the Company received million of funding under this program. The funding was utilized to construct network infrastructure in the Company’s US Telecom segment. The construction was completed as of June 30, 2021 and million of the funding was recorded as a reduction to property, plant and equipment and subsequent reduction to depreciation expense. The remaining ​ Tribal Bidding Credit ​ As part of the broadcast television spectrum incentive auction, the FCC implemented a tribal lands bidding credit to encourage deployment of wireless services utilizing 600 MHz spectrum on the lands of federally recognized tribes. The Company received a bidding credit of $7.4 million under this program in 2018. A portion of these funds will be used to offset network capital costs and a portion will be used to offset the costs of supporting the networks. The Company’s current estimate is that it will use $6.1 million to offset capital costs, consequently reducing future depreciation expense, and $1.3 million to offset the cost of supporting the network which will reduce future operating expense. Through June 30, 2021, the Company had spent $6.1 million on capital expenditures. During the three and six months ended June 30, 2021 the Company recorded $0.3 million and $0.6 million, respectively, in offsets to the cost of supporting the network. The credits are subject to certain requirements, including minimum coverage metrics. If the requirements are not met the funds may be subject to claw back provisions. The Company believes it is in compliance with all applicable requirements related to these funds. ​ 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. ​ RDOF ​ In the 2020 Rural Digital Opportunity Fund Phase I Auction (“RDOF”), pending the FCC’s conclusion of the award process, we expect to receive approximately $20.1 million over 10 years to provide broadband coverage to over 10,000 households. Once confirmed, the Company will be obligated to provide broadband and voice services to certain eligible areas in the United States.

RETIREMENT PLANS

RETIREMENT PLANS	6 Months Ended
	Jun. 30, 2021
RETIREMENT PLANS
RETIREMENT PLANS	​ ​ 10. RETIREMENT PLANS ​ 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. The Company recorded the net periodic benefit cost identified below (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ June 30, 2021 June 30, 2020 ​ ​ Pension benefits ​ Postretirement benefits ​ Pension benefits ​ Postretirement benefits Operating expense ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Service cost ​ $ 54 ​ $ 35 ​ $ 423 ​ $ 32 Non-operating expense ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest cost ​ ​ 572 ​ ​ 41 ​ ​ 879 ​ ​ 45 Expected return on plan assets ​ (687) ​ — ​ ​ (1,158) ​ — Actuarial (gain)/ loss ​ ​ — ​ ​ — ​ ​ (7) ​ ​ (15) Net periodic pension expense (benefit) ​ $ (61) ​ $ 76 ​ $ 137 ​ $ 62 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Six months ended ​ ​ ​ June 30, 2021 June 30, 2020 ​ ​ ​ Pension benefits ​ Postretirement benefits ​ Pension benefits ​ Postretirement benefits ​ Operating expense ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Service cost ​ $ 108 ​ $ 70 ​ $ 846 ​ $ 64 ​ Non-operating expense ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest cost ​ ​ 1,144 ​ ​ 82 ​ ​ 1,758 ​ ​ 90 ​ Expected return on plan assets ​ (1,374) ​ — ​ (2,316) ​ — ​ Actuarial (gain)/ loss ​ ​ — ​ ​ — ​ ​ (14) ​ ​ (30) ​ Net periodic pension expense ​ $ (122) ​ $ 152 ​ $ 274 ​ $ 124 ​ ​ ​ In the first quarter of 2020, the Company began the process of winding up one of its pension plans. At December 31, 2020 this plan had assets of $15.6 million and a projected benefit obligation of $15.6 million. ​ The Company was not required to make contributions to its pension plans during the six months ended June 30, 2021 and 2020. 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 six months ended June 30, 2021 . During the six months ended June 30, 2020 the Company contributed $0.7 million to its pension benefit plans. ​

INCOME TAXES

INCOME TAXES	6 Months Ended
	Jun. 30, 2021
INCOME TAXES
INCOME TAXES	11. INCOME TAXES ​ The Company’s effective tax rate for the three months ended June 30, 2021 and 2020 was (88.2%) and (37.0%), respectively. ​ The effective tax rate for the three months ended June 30, 2021 was primarily impacted by the following items: (i) the mix of income generated among the jurisdictions in which the Company operates and (ii) discrete items including a $3.4 million benefit from the reversal of an unrecognized tax position due to a statute of limitations expiration and a $0.5 million expense for interest on unrecognized tax positions. ​ The effective tax rate for the three months ended June 30, 2020 was primarily impacted by the following items: (i) the remeasurement of a forecasted domestic loss at a higher tax rate due to carryback provisions as provided by the CARES Act, (ii) the mix of income generated among the jurisdictions in which the Company operates along with the exclusion of losses in India where the Company cannot benefit from those losses as required by ASC 740-270-30-36(a), and (iii) discrete items including a $2.9 million benefit from the reversal of an unrecognized tax position due to statute of limitations expiration and a $0.5 million expense for interest on unrecognized tax positions. ​ The Company’s effective tax rate for the six months ended June 30, 2021 and 2020 was (19.7%) and (12.0%) respectively. ​ The effective tax rate for the six months ended June 30, 2021 was primarily impacted by the following items: (i) the mix of income generated among the jurisdictions in which the Company operates and (ii) discrete items including a $3.4 million benefit from the reversal of an unrecognized tax position due to a statute of limitations expiration and a $1.0 million expense for interest on unrecognized tax positions. ​ The effective tax rate for the six months ended June 30, 2020 was primarily impacted by the following items: (i) the remeasurement of a forecasted domestic loss at a higher tax rate due to carryback provisions as provided by the CARES Act, (ii) the mix of income generated among the jurisdictions in which the Company operates along with the exclusion of losses in India where we cannot benefit from those losses as required by ASC 740-270-30-36(a), and (iii) discrete items including a $2.9 million benefit from the reversal of an unrecognized tax position due to a statute of limitations expiration, a $1.0 million expense for interest on unrecognized tax positions, a $0.4 million expense to record a valuation allowance against an investment write-down which cannot be benefitted for tax purposes, and a $0.3 million benefit (net) related to the remeasurement of existing losses and temporary differences at a higher tax rate due to carryback provisions as provided by the CARES Act. ​ 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 applications of tax law and regulations. Additionally, the recognition and measurement of certain tax benefits include estimates and judgments 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. ​ ​

NET INCOME PER SHARE

NET INCOME PER SHARE	6 Months Ended
	Jun. 30, 2021
NET INCOME PER SHARE
NET INCOME PER SHARE	12. NET INCOME PER SHARE ​ For each of the three and six months ended June 30, 2021 and 2020, 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. ​

SEGMENT REPORTING

SEGMENT REPORTING	6 Months Ended
	Jun. 30, 2021
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 June 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Communication Services ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mobility ​ $ 22,754 ​ $ 2,407 ​ $ — ​ $ — ​ $ 25,161 Fixed ​ ​ 59,126 ​ 5,877 ​ — ​ — ​ 65,003 Carrier Services ​ ​ 2,523 ​ ​ 20,038 ​ ​ — ​ ​ — ​ ​ 22,561 Other ​ 239 ​ ​ — ​ ​ — ​ ​ — ​ ​ 239 Total Communication Services Revenue ​ 84,642 ​ ​ 28,322 ​ ​ — ​ ​ — ​ ​ 112,964 Other ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Managed Services ​ ​ 1,576 ​ ​ — ​ ​ — ​ ​ — ​ ​ 1,576 Construction ​ ​ — ​ ​ 9,325 ​ ​ — ​ ​ — ​ ​ 9,325 Total Other Revenue ​ ​ 1,576 ​ ​ 9,325 ​ ​ — ​ ​ — ​ ​ 10,901 Total Revenue ​ ​ 86,218 ​ ​ 37,647 ​ ​ — ​ ​ — ​ ​ 123,865 Depreciation and amortization ​ 13,790 ​ 5,079 ​ — ​ 1,286 ​ 20,155 Non-cash stock-based compensation ​ 10 ​ — ​ — ​ 2,165 ​ 2,175 Operating income (loss) ​ 14,643 ​ (556) ​ (771) ​ (10,411) ​ 2,905 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended June 30, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Communication Services ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mobility ​ $ 19,062 ​ $ 2,367 ​ $ — ​ $ — ​ $ 21,429 Fixed ​ ​ 56,567 ​ 4,937 ​ — ​ — ​ 61,504 Carrier Services ​ ​ 1,897 ​ ​ 20,856 ​ ​ — ​ ​ — ​ ​ 22,753 Other ​ 554 ​ ​ — ​ ​ — ​ ​ — ​ ​ 554 Total Communication Services Revenue ​ 78,080 ​ ​ 28,160 ​ ​ — ​ ​ — ​ ​ 106,240 Other ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Renewable Energy ​ ​ — ​ ​ — ​ ​ 874 ​ ​ — ​ ​ 874 Managed Services ​ ​ 1,984 ​ ​ — ​ ​ — ​ ​ ​ ​ ​ 1,984 Total Other Revenue ​ ​ 1,984 ​ ​ — ​ ​ 874 ​ ​ — ​ ​ 2,858 Total Revenue ​ ​ 80,064 ​ ​ 28,160 ​ ​ 874 ​ ​ — ​ ​ 109,098 Depreciation and amortization ​ 14,132 ​ ​ 5,717 ​ ​ 486 ​ ​ 1,656 ​ 21,991 Non-cash stock-based compensation ​ 28 ​ ​ — ​ ​ 131 ​ ​ 1,402 ​ 1,561 Operating income (loss) ​ 14,617 ​ ​ 1,826 ​ ​ (620) ​ ​ (8,799) ​ 7,024 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Six Months Ended June 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Communication Services ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mobility ​ $ 44,575 ​ $ 5,267 ​ $ — ​ $ — ​ $ 49,842 Fixed ​ ​ 117,873 ​ 12,248 ​ — ​ — ​ 130,121 Carrier Services ​ ​ 4,406 ​ ​ 38,774 ​ ​ — ​ ​ — ​ ​ 43,180 Other ​ 456 ​ ​ — ​ ​ — ​ ​ — ​ ​ 456 Total Communication Services Revenue ​ 167,310 ​ ​ 56,289 ​ ​ — ​ ​ — ​ ​ 223,599 Other ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Renewable Energy ​ ​ — ​ ​ — ​ ​ 418 ​ ​ — ​ ​ 418 Managed Services ​ ​ 2,726 ​ ​ — ​ ​ — ​ ​ — ​ ​ 2,726 Construction ​ — ​ ​ 21,632 ​ ​ — ​ ​ — ​ ​ 21,632 Total Other Revenue ​ ​ 2,726 ​ ​ 21,632 ​ ​ 418 ​ ​ — ​ ​ 24,776 Total Revenue ​ ​ 170,036 ​ ​ 77,921 ​ ​ 418 ​ ​ — ​ ​ 248,375 Depreciation and amortization ​ 27,616 ​ ​ 10,272 ​ ​ 188 ​ ​ 2,586 ​ 40,662 Non-cash stock-based compensation ​ 47 ​ ​ — ​ ​ 22 ​ ​ 3,442 ​ 3,511 Operating income (loss) ​ 27,786 ​ ​ (1,090) ​ ​ (1,433) ​ ​ (19,009) ​ 6,254 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Six Months Ended June 30, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Communication Services ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mobility ​ $ 39,198 ​ $ 4,770 ​ $ — ​ $ — ​ $ 43,968 Fixed ​ ​ 115,056 ​ 9,762 ​ — ​ — ​ 124,818 Carrier Services ​ ​ 3,541 ​ ​ 40,927 ​ ​ — ​ ​ — ​ ​ 44,468 Other ​ 891 ​ ​ — ​ ​ — ​ ​ — ​ ​ 891 Total Communication Services Revenue ​ 158,686 ​ ​ 55,459 ​ ​ — ​ ​ — ​ ​ 214,145 Other ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Renewable Energy ​ ​ — ​ ​ — ​ ​ 2,196 ​ ​ — ​ ​ 2,196 Managed Services ​ ​ 3,663 ​ ​ — ​ ​ — ​ ​ ​ ​ ​ 3,663 Total Other Revenue ​ ​ 3,663 ​ ​ — ​ ​ 2,196 ​ ​ — ​ ​ 5,859 Total Revenue ​ ​ 162,349 ​ ​ 55,459 ​ ​ 2,196 ​ ​ — ​ ​ 220,004 Depreciation and amortization ​ 28,448 ​ ​ 11,602 ​ ​ 1,100 ​ ​ 3,359 ​ 44,509 Non-cash stock-based compensation ​ (9) ​ ​ — ​ ​ 131 ​ ​ 2,599 ​ 2,721 Operating income (loss) ​ 28,005 ​ ​ 4,019 ​ ​ (1,077) ​ ​ (16,623) ​ 14,324 ​ (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 June 30, 2021 and December 31, 2020 consists of the following (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated June 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash, Cash equivalents, and Investments ​ $ 48,301 ​ $ 26,041 ​ $ 5,350 ​ $ 15,193 ​ $ 94,885 Total current assets ​ ​ 108,346 ​ ​ 65,043 ​ ​ 9,287 ​ ​ 17,169 ​ ​ 199,845 Fixed assets, net ​ ​ 447,261 ​ ​ 68,064 ​ ​ — ​ ​ 10,960 ​ ​ 526,285 Goodwill ​ 25,421 ​ 35,269 ​ — ​ — ​ ​ 60,690 Total assets ​ 640,162 ​ 308,514 ​ 22,170 ​ 95,728 ​ ​ 1,066,574 Total current liabilities ​ ​ 81,709 ​ ​ 33,624 ​ ​ 1,126 ​ ​ 20,113 ​ ​ 136,572 Total debt ​ ​ 71,044 ​ ​ 16,657 ​ ​ — ​ ​ — ​ ​ 87,701 December 31, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash, Cash equivalents, and Investments ​ $ 45,848 ​ $ 26,921 ​ $ 4,311 ​ $ 26,845 ​ $ 103,925 Total current assets ​ ​ 107,315 ​ ​ 65,806 ​ ​ 39,057 ​ ​ 27,887 ​ ​ 240,065 Fixed assets, net ​ ​ 449,888 ​ ​ 73,717 ​ ​ — ​ ​ 12,857 ​ ​ 536,462 Goodwill ​ 25,421 ​ 35,270 ​ — ​ — ​ ​ 60,691 Total assets ​ 642,834 ​ 265,797 ​ 39,045 ​ 136,035 ​ ​ 1,083,711 Total current liabilities ​ ​ 80,875 ​ ​ 43,200 ​ ​ 1,038 ​ ​ 22,815 ​ ​ 147,928 Total debt ​ ​ 72,823 ​ ​ — ​ ​ — ​ ​ — ​ ​ 72,823 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Capital Expenditures ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ ​ US ​ ​ Renewable ​ ​ Corporate and ​ ​ ​ Six months ended June 30, ​ ​ Telecom ​ ​ Telecom ​ ​ Energy ​ ​ Other (1) ​ ​ Consolidated 2021 ​ $ 21,843 ​ $ 18,792 ​ $ — ​ $ 1,297 ​ $ 41,932 2020 ​ ​ 19,929 ​ ​ 8,883 ​ ​ 1,634 ​ ​ 1,519 ​ ​ 31,965 ​ (1) Corporate and other items refer to corporate overhead costs and consolidating adjustments

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	6 Months Ended
	Jun. 30, 2021
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 intends to defend vigorously against such legal challenge. GTT has filed several lawsuits in the High Court of Guyana asserting that, despite its denials, Digicel is engaged in international bypass in violation of GTT’s exclusive license rights, the interconnection agreement between the parties, and the laws of Guyana. GTT is seeking injunctive relief to stop what it perceives to be the illegal bypass activity and to obtain monetary damages. Digicel filed counterclaims alleging that GTT has violated the terms of the interconnection agreement and Guyana laws. These suits, filed in 2010 and 2012, have been consolidated with Digicel’s constitutional challenge described above. 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. The Company believes that some adverse outcome is probable and has accordingly accrued $5.0 million as of June 30, 2021 for these matters. 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 defaulted in appearance in the matter and judgment was entered against the Company in the amount of approximately $2.8 million. In July 2021, the Company appeared in the High Court of Guyana to oppose the enforcement of the foreign judgment and intends to vigorously defend the matter. The Company believes that some adverse outcome is probable and has accordingly accrued

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	6 Months Ended
	Jun. 30, 2021
SUBSEQUENT EVENTS
SUBSEQUENT EVENTS	15. SUBSEQUENT EVENTS ​ 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 $340 million on cash, (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 acquisition 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 $70 million in conjunction with the Alaska Transaction (the “Freedom 3 Investment”). The Freedom 3 Investment consists of common and preferred equity instruments in a subsidiary of the Company which holds the ownership of Alaska Communications. The Company will account for the Freedom 3 Investment as mezzanine equity in its consolidated financial statements. 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 $2.4 million of transaction costs in conjunction with the Alaska Transaction, of which $1.5 million was incurred during the six months ended June 30, 2021. Beginning on July 22, 2021, the results of the Alaska Transaction will be included in the Company’s US Telecom segment. ​ Due to the limited time since the acquisition date, and the size and complexity of the Alaska Transaction, the accounting for the business combination is not yet complete. The Company is not able to provide the valuation of certain components of consideration transferred or provide the allocation of consideration paid to the assets acquired or liabilities assumed. Supplemental pro forma revenue and earnings of the combined company will be determined on the completion of the business combination accounting and allocation of consideration. ​ Alaska Financing ​ On July 22, 2021, Alaska Communications entered into a Credit Agreement with Fifth Third Bank, National Association, as Administrative Agent, and the lenders party thereto to provide debt financing in the form of a revolving facility in an aggregate amount at any one time outstanding not to exceed $35.0 million (the “Alaska Revolving Facility”) and an initial term loan facility in the aggregate amount not to exceed $210.0 million (the “Alaska Credit Facility”). In connection with the Alaska Transaction, Alaska Communications drew $220 million from the new Alaska Credit Facility in the amounts of $210.0 million under the term loan and $10.0 million under the Alaska Revolving Facility. 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 payments 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, $1,312,500; and from the fourth quarter of 2024 through the third quarter of 2026, $2,625,000. The remaining unpaid balance is due on, and the final maturity date is, July 22, 2026; ● 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 4.00:1.00, stepping down to 3.75:1.00 beginning with the second quarter of 2024; and (b) a minimum Consolidated Fixed Charge Coverage Ratio of not less than 1.25:1.00; 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. ​ On July 20, 2021, the Company drew $73.0 million in proceeds from its 2019 CoBank Credit Facility to pay a portion of the purchase price of the Alaska Transaction. For more information on the 2019 CoBank Credit Facility, see Note 8 .

BASIS OF PRESENTATION (Policies

BASIS OF PRESENTATION (Policies)	6 Months Ended
	Jun. 30, 2021
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
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, 2020, filed with the SEC on March 1, 2021. ​ 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 January 1, 2020, the Company changed its presentation of revenue in the Condensed Consolidated Statement of Operations and in the Selected Segment Financial Information tables. This change is intended to better align the Company’s financial performance with the views of management and industry competitors, and to facilitate a more constructive dialogue with the investment community. ​ Specifically, the previously disclosed revenue categories of wireless and wireline revenue are being represented as Mobility, Fixed and Carrier Services revenue within the Company’s segment information and are included within communications services revenue within its Statements of Operations. Managed services revenue, which was previously a component of wireline revenue, along with revenue from the Company’s Renewable Energy operations, is now included in other revenue. Construction revenue is also included as a component of other revenue. ​ Presentation of Operating Expenses ​ Effective January 1, 2021, the Company changed its presentation of operating expenses in the Condensed Consolidated Statement of Operations by combining the previously disclosed Termination and Access Fees with Engineering and Operations as the newly represented Cost of Services. 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 June 2016, the FASB issued ASU 2016-13, “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). ASU 2016-13 requires entities to use a new forward-looking, expected loss model to estimate credit losses. It also requires additional disclosure relating to the credit quality of trade and other receivables, including information relating to management’s estimate of credit allowances. The Company adopted ASU 2016-13 using the modified retrospective approach on its January 1, 2020 effective date. Refer to Note 3 of the Condensed Consolidated Financial Statements in this Report. ​ On December 18, 2019, the FASB issued new guidance that simplifies the accounting for income taxes. Amendments include the removal of certain exceptions to the general principles of ASC 740, Income taxes. The Company adopted this guidance in 2021 using a prospective method. The adoption of this guidance did not have a material impact on the Company’s consolidated financial statements; however, the impact in future periods will be dependent on the extent of future events and circumstances.

ORGANIZATION AND BUSINESS OPE_2

ORGANIZATION AND BUSINESS OPERATIONS (Tables)	6 Months Ended
	Jun. 30, 2021
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 Bermuda, Guyana, US Virgin Islands One, GTT+, Viya ​ Fixed 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 United States (rural markets) Choice, Choice NTUA Wireless, Geoverse ​ ​ Fixed ​ United States ​ Commnet, Choice, Choice NTUA Wireless, Deploycom ​ ​ Carrier Services ​ United States ​ Commnet, Essextel ​ Managed Services United States Choice Renewable Energy (1) ​ Solar ​ India ​ Vibrant Energy

REVENUE RECOGNITION AND RECEI_2

REVENUE RECOGNITION AND RECEIVABLES (Tables)	6 Months Ended
	Jun. 30, 2021
REVENUE RECOGNITION AND RECEIVABLES
Summary of contracts asset and liabilities	Contract assets and liabilities consisted of the following (amounts in thousands) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2021 ​ December 31, 2020 ​ ​ $ Change ​ % Change Contract asset – current $ 3,536 ​ $ 2,478 ​ $ 1,058 ​ 43 % Contract asset – noncurrent ​ 916 ​ ​ 910 ​ ​ 6 ​ 1 % Contract liability – current ​ (15,332) ​ ​ (18,544) ​ ​ 3,212 ​ 17 % Contract liability – noncurrent ​ (2,125) ​ ​ (2,193) ​ ​ 68 ​ 3 % Net contract liability $ (13,005) ​ $ (17,349) ​ $ 4,344 ​ 25 %
Schedule of activity in allowances for credit losses	​ ​ ​ ​ ​ ​ ​ ​ ​ Six months ended June 30, 2021 ​ Six months ended June 30, 2020 ​ ​ ​ ​ ​ ​ ​ Balance at beginning of period $ 12,121 ​ $ 12,724 Current period provision for expected losses ​ 2,299 ​ ​ 3,397 Write-offs charged against the allowance ​ (1,196) ​ ​ (4,875) Recoveries collected ​ ​ 267 ​ ​ 354 Balance at end of period ​ $ 13,491 ​ $ 11,600

LEASES (Tables)

LEASES (Tables)	6 Months Ended
	Jun. 30, 2021
LEASES
Summary of components of lease expense	The components of lease expense were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended June 30, 2021 ​ Three months ended June 30, 2020 ​ Six months ended June 30, 2021 ​ Six months ended June 30, 2020 Operating lease cost: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating lease cost $ 4,248 ​ $ 4,029 ​ $ 8,473 ​ $ 8,076 Short-term lease cost ​ 729 ​ ​ 729 ​ ​ 1,137 ​ ​ 1,271 Variable lease cost ​ 1,016 ​ ​ 1,540 ​ ​ 2,080 ​ ​ 2,343 Total operating lease cost $ 5,993 ​ $ 6,298 ​ $ 11,690 ​ $ 11,690 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Finance lease cost: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortization of right-of-use asset $ 615 ​ $ 522 ​ $ 1,190 ​ $ 1,094 Variable costs ​ 197 ​ ​ 186 ​ ​ 392 ​ ​ 458 Total finance lease cost $ 812 ​ $ 708 ​ $ 1,582 ​ $ 1,552
Summary of weighted-average remaining lease term and discount rate	The weighted average remaining lease terms and discount rates as of June 30, 2021 and December 31, 2020 are noted in the table below: ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2021 ​ December 31, 2020 Weighted-average remaining lease term ​ ​ ​ ​ ​ Operating leases ​ 5.7 years ​ ​ 5.9 years Financing leases ​ 10.5 years ​ ​ 10.9 years ​ ​ ​ ​ ​ ​ Weighted-average discount rate ​ ​ ​ ​ ​ Operating leases ​ 4.8% ​ ​ 5.0% Financing leases ​ 4.3% ​ ​ 3.3%
Summary of maturities of operating lease liabilities	Maturities of lease liabilities as of June 30, 2021 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Financing Leases 2021 (excluding the six months ended June 30, 2021) $ 8,184 ​ $ 251 2022 ​ 15,243 ​ ​ 501 2023 ​ 12,846 ​ ​ 501 2024 ​ 11,702 ​ ​ 383 2025 ​ 8,800 ​ ​ 285 Thereafter ​ 14,599 ​ ​ 522 Total lease payments ​ 71,374 ​ ​ 2,443 Less imputed interest ​ (9,323) ​ ​ (317) Total $ 62,051 ​ $ 2,126 ​ Maturities of lease liabilities as of December 31, 2020 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Financing Leases 2021 $ 14,877 ​ $ 334 2022 ​ 14,202 ​ ​ 333 2023 ​ 11,799 ​ ​ 333 2024 ​ 10,633 ​ ​ 211 2025 ​ 7,816 ​ ​ - Thereafter ​ 13,094 ​ ​ - Total lease payments ​ 72,421 ​ ​ 1,211 Less imputed interest ​ (10,097) ​ ​ (82) Total $ 62,324 ​ $ 1,129
Summary of maturities of finance lease liabilities	​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Financing Leases 2021 (excluding the six months ended June 30, 2021) $ 8,184 ​ $ 251 2022 ​ 15,243 ​ ​ 501 2023 ​ 12,846 ​ ​ 501 2024 ​ 11,702 ​ ​ 383 2025 ​ 8,800 ​ ​ 285 Thereafter ​ 14,599 ​ ​ 522 Total lease payments ​ 71,374 ​ ​ 2,443 Less imputed interest ​ (9,323) ​ ​ (317) Total $ 62,051 ​ $ 2,126 ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Financing Leases 2021 $ 14,877 ​ $ 334 2022 ​ 14,202 ​ ​ 333 2023 ​ 11,799 ​ ​ 333 2024 ​ 10,633 ​ ​ 211 2025 ​ 7,816 ​ ​ - Thereafter ​ 13,094 ​ ​ - Total lease payments ​ 72,421 ​ ​ 1,211 Less imputed interest ​ (10,097) ​ ​ (82) Total $ 62,324 ​ $ 1,129

ACQUISITIONS AND DISPOSITIONS (

ACQUISITIONS AND DISPOSITIONS (Tables)	6 Months Ended
	Jun. 30, 2021
ACQUISITIONS AND DISPOSITIONS
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)

FAIR VALUE MEASUREMENTS AND I_2

FAIR VALUE MEASUREMENTS AND INVESTMENTS (Tables)	6 Months Ended
	Jun. 30, 2021
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 June 30, 2021 and December 31, 2020 are summarized as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2021 ​ ​ Significant Other ​ ​ Quoted Prices in ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Active Markets ​ Inputs ​ Inputs ​ ​ ​ Description ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ Total Certificates of deposit ​ $ — ​ $ 380 ​ $ — ​ $ 380 Money market funds ​ ​ 3,134 ​ ​ — ​ ​ — ​ ​ 3,134 Other investments ​ ​ — ​ ​ — ​ ​ 2,016 ​ ​ 2,016 Interest rate swap ​ ​ — ​ ​ (97) ​ ​ — ​ ​ (97) Total assets and liabilities measured at fair value ​ $ 3,134 ​ $ 283 ​ $ 2,016 ​ $ 5,433 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ Significant Other ​ ​ Quoted Prices in ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Active Markets ​ Inputs ​ Inputs ​ ​ ​ Description ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ Total Certificates of deposit ​ $ — ​ $ 380 ​ $ — ​ $ 380 Money market funds ​ ​ 2,785 ​ ​ — ​ ​ — ​ ​ 2,785 Other investments ​ ​ — ​ ​ — ​ ​ 13,357 ​ ​ 13,357 Interest rate swap ​ ​ — ​ ​ (157) ​ ​ — ​ ​ (157) Total assets and liabilities measured at fair value ​ $ 2,785 ​ $ 223 ​ $ 13,357 ​ $ 16,365

RETIREMENT PLANS (Tables)

RETIREMENT PLANS (Tables)	6 Months Ended
	Jun. 30, 2021
RETIREMENT PLANS
Schedule of components of the plan's net periodic pension cost	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ June 30, 2021 June 30, 2020 ​ ​ Pension benefits ​ Postretirement benefits ​ Pension benefits ​ Postretirement benefits Operating expense ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Service cost ​ $ 54 ​ $ 35 ​ $ 423 ​ $ 32 Non-operating expense ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest cost ​ ​ 572 ​ ​ 41 ​ ​ 879 ​ ​ 45 Expected return on plan assets ​ (687) ​ — ​ ​ (1,158) ​ — Actuarial (gain)/ loss ​ ​ — ​ ​ — ​ ​ (7) ​ ​ (15) Net periodic pension expense (benefit) ​ $ (61) ​ $ 76 ​ $ 137 ​ $ 62 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Six months ended ​ ​ ​ June 30, 2021 June 30, 2020 ​ ​ ​ Pension benefits ​ Postretirement benefits ​ Pension benefits ​ Postretirement benefits ​ Operating expense ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Service cost ​ $ 108 ​ $ 70 ​ $ 846 ​ $ 64 ​ Non-operating expense ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest cost ​ ​ 1,144 ​ ​ 82 ​ ​ 1,758 ​ ​ 90 ​ Expected return on plan assets ​ (1,374) ​ — ​ (2,316) ​ — ​ Actuarial (gain)/ loss ​ ​ — ​ ​ — ​ ​ (14) ​ ​ (30) ​ Net periodic pension expense ​ $ (122) ​ $ 152 ​ $ 274 ​ $ 124 ​ ​

SEGMENT REPORTING (Tables)

SEGMENT REPORTING (Tables)	6 Months Ended
	Jun. 30, 2021
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 June 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Communication Services ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mobility ​ $ 22,754 ​ $ 2,407 ​ $ — ​ $ — ​ $ 25,161 Fixed ​ ​ 59,126 ​ 5,877 ​ — ​ — ​ 65,003 Carrier Services ​ ​ 2,523 ​ ​ 20,038 ​ ​ — ​ ​ — ​ ​ 22,561 Other ​ 239 ​ ​ — ​ ​ — ​ ​ — ​ ​ 239 Total Communication Services Revenue ​ 84,642 ​ ​ 28,322 ​ ​ — ​ ​ — ​ ​ 112,964 Other ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Managed Services ​ ​ 1,576 ​ ​ — ​ ​ — ​ ​ — ​ ​ 1,576 Construction ​ ​ — ​ ​ 9,325 ​ ​ — ​ ​ — ​ ​ 9,325 Total Other Revenue ​ ​ 1,576 ​ ​ 9,325 ​ ​ — ​ ​ — ​ ​ 10,901 Total Revenue ​ ​ 86,218 ​ ​ 37,647 ​ ​ — ​ ​ — ​ ​ 123,865 Depreciation and amortization ​ 13,790 ​ 5,079 ​ — ​ 1,286 ​ 20,155 Non-cash stock-based compensation ​ 10 ​ — ​ — ​ 2,165 ​ 2,175 Operating income (loss) ​ 14,643 ​ (556) ​ (771) ​ (10,411) ​ 2,905 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended June 30, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Communication Services ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mobility ​ $ 19,062 ​ $ 2,367 ​ $ — ​ $ — ​ $ 21,429 Fixed ​ ​ 56,567 ​ 4,937 ​ — ​ — ​ 61,504 Carrier Services ​ ​ 1,897 ​ ​ 20,856 ​ ​ — ​ ​ — ​ ​ 22,753 Other ​ 554 ​ ​ — ​ ​ — ​ ​ — ​ ​ 554 Total Communication Services Revenue ​ 78,080 ​ ​ 28,160 ​ ​ — ​ ​ — ​ ​ 106,240 Other ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Renewable Energy ​ ​ — ​ ​ — ​ ​ 874 ​ ​ — ​ ​ 874 Managed Services ​ ​ 1,984 ​ ​ — ​ ​ — ​ ​ ​ ​ ​ 1,984 Total Other Revenue ​ ​ 1,984 ​ ​ — ​ ​ 874 ​ ​ — ​ ​ 2,858 Total Revenue ​ ​ 80,064 ​ ​ 28,160 ​ ​ 874 ​ ​ — ​ ​ 109,098 Depreciation and amortization ​ 14,132 ​ ​ 5,717 ​ ​ 486 ​ ​ 1,656 ​ 21,991 Non-cash stock-based compensation ​ 28 ​ ​ — ​ ​ 131 ​ ​ 1,402 ​ 1,561 Operating income (loss) ​ 14,617 ​ ​ 1,826 ​ ​ (620) ​ ​ (8,799) ​ 7,024 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Six Months Ended June 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Communication Services ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mobility ​ $ 44,575 ​ $ 5,267 ​ $ — ​ $ — ​ $ 49,842 Fixed ​ ​ 117,873 ​ 12,248 ​ — ​ — ​ 130,121 Carrier Services ​ ​ 4,406 ​ ​ 38,774 ​ ​ — ​ ​ — ​ ​ 43,180 Other ​ 456 ​ ​ — ​ ​ — ​ ​ — ​ ​ 456 Total Communication Services Revenue ​ 167,310 ​ ​ 56,289 ​ ​ — ​ ​ — ​ ​ 223,599 Other ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Renewable Energy ​ ​ — ​ ​ — ​ ​ 418 ​ ​ — ​ ​ 418 Managed Services ​ ​ 2,726 ​ ​ — ​ ​ — ​ ​ — ​ ​ 2,726 Construction ​ — ​ ​ 21,632 ​ ​ — ​ ​ — ​ ​ 21,632 Total Other Revenue ​ ​ 2,726 ​ ​ 21,632 ​ ​ 418 ​ ​ — ​ ​ 24,776 Total Revenue ​ ​ 170,036 ​ ​ 77,921 ​ ​ 418 ​ ​ — ​ ​ 248,375 Depreciation and amortization ​ 27,616 ​ ​ 10,272 ​ ​ 188 ​ ​ 2,586 ​ 40,662 Non-cash stock-based compensation ​ 47 ​ ​ — ​ ​ 22 ​ ​ 3,442 ​ 3,511 Operating income (loss) ​ 27,786 ​ ​ (1,090) ​ ​ (1,433) ​ ​ (19,009) ​ 6,254 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Six Months Ended June 30, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Communication Services ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mobility ​ $ 39,198 ​ $ 4,770 ​ $ — ​ $ — ​ $ 43,968 Fixed ​ ​ 115,056 ​ 9,762 ​ — ​ — ​ 124,818 Carrier Services ​ ​ 3,541 ​ ​ 40,927 ​ ​ — ​ ​ — ​ ​ 44,468 Other ​ 891 ​ ​ — ​ ​ — ​ ​ — ​ ​ 891 Total Communication Services Revenue ​ 158,686 ​ ​ 55,459 ​ ​ — ​ ​ — ​ ​ 214,145 Other ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Renewable Energy ​ ​ — ​ ​ — ​ ​ 2,196 ​ ​ — ​ ​ 2,196 Managed Services ​ ​ 3,663 ​ ​ — ​ ​ — ​ ​ ​ ​ ​ 3,663 Total Other Revenue ​ ​ 3,663 ​ ​ — ​ ​ 2,196 ​ ​ — ​ ​ 5,859 Total Revenue ​ ​ 162,349 ​ ​ 55,459 ​ ​ 2,196 ​ ​ — ​ ​ 220,004 Depreciation and amortization ​ 28,448 ​ ​ 11,602 ​ ​ 1,100 ​ ​ 3,359 ​ 44,509 Non-cash stock-based compensation ​ (9) ​ ​ — ​ ​ 131 ​ ​ 2,599 ​ 2,721 Operating income (loss) ​ 28,005 ​ ​ 4,019 ​ ​ (1,077) ​ ​ (16,623) ​ 14,324 ​ (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 June 30, 2021 and December 31, 2020 consists of the following (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ US ​ Renewable ​ Corporate and ​ ​ ​ ​ ​ Telecom ​ Telecom ​ Energy ​ Other (1) ​ Consolidated June 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash, Cash equivalents, and Investments ​ $ 48,301 ​ $ 26,041 ​ $ 5,350 ​ $ 15,193 ​ $ 94,885 Total current assets ​ ​ 108,346 ​ ​ 65,043 ​ ​ 9,287 ​ ​ 17,169 ​ ​ 199,845 Fixed assets, net ​ ​ 447,261 ​ ​ 68,064 ​ ​ — ​ ​ 10,960 ​ ​ 526,285 Goodwill ​ 25,421 ​ 35,269 ​ — ​ — ​ ​ 60,690 Total assets ​ 640,162 ​ 308,514 ​ 22,170 ​ 95,728 ​ ​ 1,066,574 Total current liabilities ​ ​ 81,709 ​ ​ 33,624 ​ ​ 1,126 ​ ​ 20,113 ​ ​ 136,572 Total debt ​ ​ 71,044 ​ ​ 16,657 ​ ​ — ​ ​ — ​ ​ 87,701 December 31, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash, Cash equivalents, and Investments ​ $ 45,848 ​ $ 26,921 ​ $ 4,311 ​ $ 26,845 ​ $ 103,925 Total current assets ​ ​ 107,315 ​ ​ 65,806 ​ ​ 39,057 ​ ​ 27,887 ​ ​ 240,065 Fixed assets, net ​ ​ 449,888 ​ ​ 73,717 ​ ​ — ​ ​ 12,857 ​ ​ 536,462 Goodwill ​ 25,421 ​ 35,270 ​ — ​ — ​ ​ 60,691 Total assets ​ 642,834 ​ 265,797 ​ 39,045 ​ 136,035 ​ ​ 1,083,711 Total current liabilities ​ ​ 80,875 ​ ​ 43,200 ​ ​ 1,038 ​ ​ 22,815 ​ ​ 147,928 Total debt ​ ​ 72,823 ​ ​ — ​ ​ — ​ ​ — ​ ​ 72,823 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Capital Expenditures ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ International ​ ​ US ​ ​ Renewable ​ ​ Corporate and ​ ​ ​ Six months ended June 30, ​ ​ Telecom ​ ​ Telecom ​ ​ Energy ​ ​ Other (1) ​ ​ Consolidated 2021 ​ $ 21,843 ​ $ 18,792 ​ $ — ​ $ 1,297 ​ $ 41,932 2020 ​ ​ 19,929 ​ ​ 8,883 ​ ​ 1,634 ​ ​ 1,519 ​ ​ 31,965 ​ (1) Corporate and other items refer to corporate overhead costs and consolidating adjustments

ORGANIZATION AND BUSINESS OPE_3

ORGANIZATION AND BUSINESS OPERATIONS (Details)	6 Months Ended
	Jun. 30, 2021segment
ORGANIZATION AND BUSINESS OPERATIONS
Number of Operating Segments	3

REVENUE RECOGNITION AND RECEI_3

REVENUE RECOGNITION AND RECEIVABLES - Contract Assets and Liabilities (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)
Contract Assets and Liabilities
Contract Asset - current	$ 2,478
Change in contract asset - current	1,058
Contract Asset - current	$ 3,536
% of change in contract asset - current	43.00%
Contract asset, noncurrent	$ 910
Change in contract asset - noncurrent	6
Contract asset, noncurrent	$ 916
% of change in contract asset - noncurrent	1.00%
Contract liability- current	$ (18,544)
Change in contract liabilities - current	3,212
Contract liability- current	$ (15,332)
% of change in contract liabilities - current	17.00%
Contract liability- noncurrent	$ (2,193)
Change in contract liabilities - noncurrent	68
Contract liability- noncurrent	$ (2,125)
% of change in contract liabilities - Noncurrent	3.00%
Net contract liability	$ (17,349)
Change in net contract liability	4,344
Net contract liability	$ (13,005)
% of change in net contract liability	25.00%
Revenue recognized related to contract liability	$ 18,200
Amortization of contract assets	1,400
Revenue recognized in the period related to performance obligations that were satisfied or partially satisfied in previous periods	$ 0
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	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Contract Acquisition Costs
Amortization of contract acquisition cost	$ 0.6	$ 0.5	$ 1.2	$ 1
Prepayments and other current assets
Contract Acquisition Costs
Short-term contract acquisition costs	2.1		2.1
Other Assets
Contract Acquisition Costs
Long-term contract acquisition costs	$ 1.4		$ 1.4

REVENUE RECOGNITION AND RECEI_5

REVENUE RECOGNITION AND RECEIVABLES - Remaining Performance Obligations - (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Revenue Recognition
Transaction price allocated to unsatisfied performance obligations		$ 299
Percentage of performance obligations to be satisfied	60.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01
Revenue Recognition
Transaction price allocated to unsatisfied performance obligations	$ 249
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	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounts Receivable
Gross accounts receivable	$ 86,600	$ 67,100
Allowance for credit loss	13,500	12,100
Customer receivable, current	4,094	1,227
Customer receivable - long term	28,333	9,614
Retained earnings	516,208	516,901
FirstNet agreement
Accounts Receivable
Customer receivable	32,400	10,800
Customer receivable, current	4,100	1,200
Customer receivable - long term	$ 28,300	$ 9,600
Cumulative Effect, Period of Adoption, Adjustment | ASU 2016-13
Accounts Receivable
Retained earnings			$ 0

REVENUE RECOGNITION AND RECEI_7

REVENUE RECOGNITION AND RECEIVABLES - Allowance for Credit Losses Rollforward - (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
REVENUE RECOGNITION AND RECEIVABLES
Beginning Balance	$ 12,121	$ 12,724
Current period provision for expected losses	2,299	3,397
Write-offs charged against the allowance	(1,196)	(4,875)
Recoveries collected	267	354
Ending Balance	$ 13,491	$ 11,600

LEASES - Narrative (Details)

LEASES - Narrative (Details)	Jun. 30, 2021
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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
LEASES
Operating lease cost	$ 4,248	$ 4,029	$ 8,473	$ 8,076
Short-term lease cost	729	729	1,137	1,271
Variable lease cost	1,016	1,540	2,080	2,343
Total operating lease cost	5,993	6,298	11,690	11,690
Payments for lease liabilities			7,600	7,200
Lease liabilities arising from ROU			6,300	1,700
Finance lease cost:
Amortization of right-of-use asset	615	522	1,190	1,094
Variable costs	197	186	392	458
Total finance lease cost	812	$ 708	1,582	$ 1,552
Finance leases cost included in property, plant and equipment	26,700		26,700		$ 25,400
Accumulated amortization related to finance leases	10,700		10,700		9,500
Principal payments, finance lease liabilities			500
Additional finance lease liabilities recognized			1,400
Total	2,126		2,126		$ 1,129
Finance lease liability, current	$ 400		$ 400

LEASES - Weighted average remai

LEASES - Weighted average remaining lease terms and discount rates (Details)	Jun. 30, 2021	Dec. 31, 2020
LEASES
Operating leases, weighted average remaining lease term	5 years 8 months 12 days	5 years 10 months 24 days
Financing leases, weighted average remaining lease term	10 years 6 months	10 years 10 months 24 days
Operating leases, weighted average discount rate	4.80%	5.00%
Financing leases, weighted average discount rate	4.30%	3.30%

LEASES - Maturities of lease li

LEASES - Maturities of lease liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
LEASES
2021 (excluding the six months ended June 30, 2021)	$ 8,184
Next Twelve Months	15,243	$ 14,877
Year Two	12,846	14,202
Year Three	11,702	11,799
Year Four	8,800	10,633
Thereafter	14,599
Year Five		7,816
Thereafter		13,094
Total lease payments	71,374	72,421
Less imputed interest	(9,323)	(10,097)
Total	$ 62,051	$ 62,324
Operating Lease, Liability, Statement of Financial Position [Extensible List]	atni:LeaseLiabilityCurrent atni:LeaseLiabilityNoncurrent	atni:LeaseLiabilityCurrent atni:LeaseLiabilityNoncurrent
Finance lease liability
2021 (excluding the six months ended June 30, 2021)	$ 251
Next Twelve Months	501	$ 334
Year two	501	333
Year three	383	333
Year four	285	211
Thereafter	522
Total lease payments	2,443	1,211
Less imputed interest	(317)	(82)
Total	$ 2,126	$ 1,129
Finance Lease, Liability, Statement of Financial Position [Extensible List]	atni:LeaseLiabilityCurrent atni:LeaseLiabilityNoncurrent	atni:LeaseLiabilityCurrent atni:LeaseLiabilityNoncurrent

ACQUISITIONS AND DISPOSITIONS -

ACQUISITIONS AND DISPOSITIONS - Disposition - Vibrant Energy (Details) - USD ($) $ in Thousands	1 Months Ended		6 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2021	Jan. 31, 2021	Jun. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Mar. 31, 2021
Assets and liabilities disposed
Current assets					$ 34,735
Current liabilities					(717)
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	$ 700		$ 21,500
Transaction costs	$ 700	1,283	$ 600	$ 1,300
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	Jun. 30, 2021	Dec. 31, 2020
Fair value measurements
Total assets and liabilities measured at fair value	$ 5,433	$ 16,365
Certificate of deposit
Fair value measurements
Cash and cash equivalents	380	380
Money market funds
Fair value measurements
Cash and cash equivalents	3,134	2,785
Other investments
Fair value measurements
Investments	2,016	13,357
Interest rate swap
Fair value measurements
Derivative liabilities	(97)	(157)
Level 1
Fair value measurements
Total assets and liabilities measured at fair value	3,134	2,785
Level 1 | Money market funds
Fair value measurements
Cash and cash equivalents	3,134	2,785
Level 2
Fair value measurements
Total assets and liabilities measured at fair value	283	223
Level 2 | Certificate of deposit
Fair value measurements
Cash and cash equivalents	380	380
Level 2 | Interest rate swap
Fair value measurements
Derivative liabilities	(97)	(157)
Level 3
Fair value measurements
Total assets and liabilities measured at fair value	2,016	13,357
Level 3 | Other investments
Fair value measurements
Investments	$ 2,016	$ 13,357

FAIR VALUE MEASUREMENTS AND I_4

FAIR VALUE MEASUREMENTS AND INVESTMENTS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended		12 Months Ended
	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2019	Jan. 31, 2021	Dec. 31, 2020
Fair value measurements
Payment for investment		$ 5,242	$ 2,768
(Gain) loss on equity investments		(1,793)	$ 1,412
Privately Held Investment
Fair value measurements
Payments to acquire equity method investment	$ 2,800
Ownership percentage	24.00%
Increase (decrease) in equity method investments		(1,300)
(Gain) loss on equity investments		900
Currency losses		400
Equity Security
Fair value measurements
Payment for investment		3,000
Gain from conversion		2,500
Investments		16,500				$ 11,000
India solar operations
Fair value measurements
Payments to acquire equity method investment		1,600
Carrying value		12,900			$ 11,800
Increase (decrease) in equity method investments		1,100
Currency losses		200
Distribution to minority investment partner		300
Other Assets | Privately Held Investment
Fair value measurements
Carrying value		16,600				17,900
Other investments
Fair value measurements
Decrease in fair value of level 3 investments		11,300
Transferring out of level 3		11,000
Fair value of the remaining level 3 investments		300
Cash distributions		500
Income recognized		200
Other investments | Renewable energy partnership
Fair value measurements
Investment Tax Credit				$ 12,000
Equity investments		2,000				2,300
Investment cost				$ 14,400
Carrying Value
Fair value measurements
Long-term debt		87,700				72,800
Carrying Value | Other Assets | Privately Held Investment
Fair value measurements
Investments		1,300				1,300
Level 2 | Estimated Fair Value
Fair value measurements
Long-term debt		$ 88,600				$ 73,300

LONG-TERM DEBT (Details)

LONG-TERM DEBT (Details) $ in Thousands	Jul. 20, 2021USD ($)	Mar. 26, 2020USD ($)	Apr. 10, 2019USD ($)	May 22, 2017	Jun. 30, 2021USD ($)	May 22, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2018USD ($)	Jul. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Jul. 01, 2016USD ($)
Long-term debt
Outstanding borrowings					$ 87,701		$ 72,823
Current portion of Customer receivable credit facility					2,335
Borrowings					17,582
Repayment of credit facility					384
One Communications Debt
Long-term debt
Financing costs						$ 300
Outstanding debt					11,600
Unamortized financing costs					100
One Communications Debt | Minimum
Long-term debt
Percentage of notional amount required for hedging arrangement				30.00%
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								$ 75,000
Outstanding debt					60,000
Unamortized financing costs					500
Revolver loan | Credit facility
Long-term debt
Maximum borrowing capacity			$ 200,000
Remaining borrowing capacity					184,000
Net leverage ratio, if qualifying event			3.25
Borrowings outstanding					0
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					16,000
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
Commnet Finance | Senior secured delayed draw term loan | Receivable credit facility
Long-term debt
Maximum borrowing capacity		$ 75,000
Remaining borrowing capacity					57,400
Outstanding borrowings					17,200
Current portion of Customer receivable credit facility					2,300
Financing costs					900
Amortization of financing costs					800
Commnet Finance | Senior secured delayed draw term loan | Receivable credit facility | LIBOR
Long-term debt
Basis spread on variable rate (as a percent)		2.50%
Commnet Finance | Senior secured delayed draw term loan | Receivable credit facility | Base rate
Long-term debt
Basis spread on variable rate (as a percent)		1.50%
Cash flow hedge | Interest rate swap
Long-term debt
Notional amount					$ 6,800				$ 11,000
Interest rate (as a percent)									1.874%
Subsequent event | Revolver loan | Credit facility
Long-term debt
Borrowings	$ 73,000
Repayment of credit facility	$ 10,000

GOVERNMENT GRANTS (Details)

GOVERNMENT GRANTS (Details) $ in Thousands	Nov. 16, 2020USD ($)	Sep. 30, 2021USD ($)	Jun. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)item	Jun. 30, 2020USD ($)	Dec. 31, 2020USD ($)itemMW	Dec. 31, 2018USD ($)	Jun. 30, 2021USD ($)
Government Grants
Revenue			$ 123,865		$ 109,098	$ 248,375	$ 220,004
Payment for PALs							20,000
Universal Service Fund programs
Government Grants
Number of fund disbursement programs | item						4
High-Cost Support Program | Grant Reduction During First Year
Government Grants
Amount of reduction in grant amount awarded	$ 10,900
High-Cost Support Program | US Telecom
Government Grants
Revenue			300		300	$ 600	600
High-Cost Support Program | International Telecom
Government Grants
Revenue			4,300		4,100	8,400	8,200
High-Cost Support Program | International Telecom | Grant Reduction During First Year
Government Grants
Ratio of reduction in grant amount	0.67
High-Cost Support Program | International Telecom | Grant Reduction During Second Year
Government Grants
Ratio of reduction in grant amount	0.33
Amount of reduction in grant amount awarded	$ 5,500
E-Rate, Lifeline and Rural Health Care Support Programs
Government Grants
Revenue			1,800		2,200	3,900	4,400
Network Connectivity for Eligible Communities
Government Grants
Grant Funds Awarded						6,500		$ 16,800
Offsetting operating activities						1,300
Construction obligation completed		$ 10,200
Construction obligation yet to be completed		$ 13,100
CARES Act
Government Grants
Grant Funds Awarded						2,400		$ 16,300		$ 18,700
Grant funds used to offset fixed asset related costs			18,400			18,400				18,400
Grant funds used to offset operating expenses			300			300				$ 300
Tribal Bidding Credit
Government Grants
Wireless service spectrum (in Mhz) | MW								600
Revenue									$ 7,400
Grant funds used to offset fixed asset related costs								$ 6,100
Grant funds used to offset operating expenses								1,300
Offsetting operating activities			300			600
Amount spent on capital expenditure						6,100
Connect America Fund Phase II Auction
Government Grants
Revenue			$ 1,900		$ 1,900	$ 3,800	$ 3,800
Grant Funds Awarded									$ 79,900
Grant fund term									10 years
CBRS Auction
Government Grants
Initial term of licenses				10 years
Payment for PALs				$ 20,400
RDOF
Government Grants
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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Components of the plan's net periodic pension cost
Projected benefit obligation					$ 15,600
Plan Net Assets					$ 15,600
Pension benefits
Components of the plan's net periodic pension cost
Service cost	$ 54	$ 423	$ 108	$ 846
Interest cost	572	879	1,144	1,758
Expected return on plan assets	(687)	(1,158)	(1,374)	(2,316)
Actuarial (gain)/ loss		(7)		(14)
Net periodic pension expense (benefit)	(61)	137	(122)	274
Company contributions			0	700
Postretirement benefits
Components of the plan's net periodic pension cost
Service cost	35	32	70	64
Interest cost	41	45	82	90
Actuarial (gain)/ loss		(15)		(30)
Net periodic pension expense (benefit)	$ 76	$ 62	$ 152	$ 124

INCOME TAXES (Details)

INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
INCOME TAXES
Effective tax rate (as a percent)	(88.20%)	(37.00%)	(19.70%)	(12.00%)
Benefit from the reversal of unrecognized tax positions due to statute expiration	$ 3.4	$ 2.9	$ 3.4	$ 2.9
Interest on unrecognized tax position	$ 0.5	$ 0.5	$ 1	1
Change in valuation allowance				0.4
Benefit (net) related to remeasurement of existing losses				$ 0.3

NET INCOME (LOSS) PER SHARE (De

NET INCOME (LOSS) PER SHARE (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Stock options
Anti-dilutive common shares not included for computation of earnings per share
Anti-dilutive potential shares excluded from the computation of diluted weighted average shares outstanding (in shares)	5,000	5,000	5,000	5,000

SEGMENT REPORTING (Details)

SEGMENT REPORTING (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)segment	Jun. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Segment reporting
Number of reportable segments | segment			3
Revenue
Revenue	$ 123,865	$ 109,098	$ 248,375	$ 220,004
Depreciation and amortization	20,155	21,991	40,662	44,509
Non-cash stock-based compensation	2,175	1,561	3,511	2,721
Operating income (loss)	2,905	7,024	6,254	14,324
Segment Assets
Cash, Cash equivalents, and Investments	94,885		94,885		$ 103,925
Total current assets	199,845		199,845		240,065
Fixed assets, net	526,285		526,285		536,462
Goodwill	60,690		60,690		60,691
Total assets	1,066,574		1,066,574		1,083,711
Total current liabilities	136,572		136,572		147,928
Total debt	87,701		87,701		72,823
Capital Expenditures
Capital expenditures			41,932	31,965
Communication services
Revenue
Revenue	112,964	106,240	223,599	214,145
Mobility
Revenue
Revenue	25,161	21,429	49,842	43,968
Fixed
Revenue
Revenue	65,003	61,504	130,121	124,818
Carrier services
Revenue
Revenue	22,561	22,753	43,180	44,468
Other
Revenue
Revenue	239	554	456	891
Other
Revenue
Revenue	10,901	2,858	24,776	5,859
Renewable Energy
Revenue
Revenue		874	418	2,196
Managed Services
Revenue
Revenue	1,576	1,984	2,726	3,663
Construction
Revenue
Revenue	9,325		21,632
Corporate and Other
Revenue
Depreciation and amortization	1,286	1,656	2,586	3,359
Non-cash stock-based compensation	2,165	1,402	3,442	2,599
Operating income (loss)	(10,411)	(8,799)	(19,009)	(16,623)
Segment Assets
Cash, Cash equivalents, and Investments	15,193		15,193		26,845
Total current assets	17,169		17,169		27,887
Fixed assets, net	10,960		10,960		12,857
Total assets	95,728		95,728		136,035
Total current liabilities	20,113		20,113		22,815
Capital Expenditures
Capital expenditures			1,297	1,519
International Telecom | Operating segments
Revenue
Revenue	86,218	80,064	170,036	162,349
Depreciation and amortization	13,790	14,132	27,616	28,448
Non-cash stock-based compensation	10	28	47	(9)
Operating income (loss)	14,643	14,617	27,786	28,005
Segment Assets
Cash, Cash equivalents, and Investments	48,301		48,301		45,848
Total current assets	108,346		108,346		107,315
Fixed assets, net	447,261		447,261		449,888
Goodwill	25,421		25,421		25,421
Total assets	640,162		640,162		642,834
Total current liabilities	81,709		81,709		80,875
Total debt	71,044		71,044		72,823
Capital Expenditures
Capital expenditures			21,843	19,929
International Telecom | Operating segments | Communication services
Revenue
Revenue	84,642	78,080	167,310	158,686
International Telecom | Operating segments | Mobility
Revenue
Revenue	22,754	19,062	44,575	39,198
International Telecom | Operating segments | Fixed
Revenue
Revenue	59,126	56,567	117,873	115,056
International Telecom | Operating segments | Carrier services
Revenue
Revenue	2,523	1,897	4,406	3,541
International Telecom | Operating segments | Other
Revenue
Revenue	239	554	456	891
International Telecom | Operating segments | Other
Revenue
Revenue	1,576	1,984	2,726	3,663
International Telecom | Operating segments | Managed Services
Revenue
Revenue	1,576	1,984	2,726	3,663
US Telecom | Operating segments
Revenue
Revenue	37,647	28,160	77,921	55,459
Depreciation and amortization	5,079	5,717	10,272	11,602
Operating income (loss)	(556)	1,826	(1,090)	4,019
Segment Assets
Cash, Cash equivalents, and Investments	26,041		26,041		26,921
Total current assets	65,043		65,043		65,806
Fixed assets, net	68,064		68,064		73,717
Goodwill	35,269		35,269		35,270
Total assets	308,514		308,514		265,797
Total current liabilities	33,624		33,624		43,200
Total debt	16,657		16,657
Capital Expenditures
Capital expenditures			18,792	8,883
US Telecom | Operating segments | Communication services
Revenue
Revenue	28,322	28,160	56,289	55,459
US Telecom | Operating segments | Mobility
Revenue
Revenue	2,407	2,367	5,267	4,770
US Telecom | Operating segments | Fixed
Revenue
Revenue	5,877	4,937	12,248	9,762
US Telecom | Operating segments | Carrier services
Revenue
Revenue	20,038	20,856	38,774	40,927
US Telecom | Operating segments | Other
Revenue
Revenue	9,325		21,632
US Telecom | Operating segments | Construction
Revenue
Revenue	9,325		21,632
Renewable Energy | Operating segments
Revenue
Revenue		874	418	2,196
Depreciation and amortization		486	188	1,100
Non-cash stock-based compensation		131	22	131
Operating income (loss)	(771)	(620)	(1,433)	(1,077)
Segment Assets
Cash, Cash equivalents, and Investments	5,350		5,350		4,311
Total current assets	9,287		9,287		39,057
Total assets	22,170		22,170		39,045
Total current liabilities	$ 1,126		1,126		$ 1,038
Capital Expenditures
Capital expenditures				1,634
Renewable Energy | Operating segments | Other
Revenue
Revenue		874	418	2,196
Renewable Energy | Operating segments | Renewable Energy
Revenue
Revenue		$ 874	$ 418	$ 2,196

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	Oct. 05, 2020item	May 31, 2015USD ($)	Jun. 30, 2021USD ($)	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
Accrued contingent liability			$ 5
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
Accrued contingent liability			$ 1.1
Amount awarded		$ 2.8

SUBSEQUENT EVENTS (Details)

SUBSEQUENT EVENTS (Details) - USD ($)	Jul. 22, 2021	Jul. 20, 2021	Apr. 10, 2019	Jun. 30, 2021	Jul. 22, 2021
Subsequent Event [Line Items]
Borrowings				$ 17,582,000
Credit facility | Revolver loan
Subsequent Event [Line Items]
Maximum borrowing capacity			$ 200,000,000
Borrowings outstanding				0
Credit facility | Revolver loan | LIBOR | Minimum
Subsequent Event [Line Items]
Basis spread on variable rate (as a percent)			1.25%
Credit facility | Revolver loan | LIBOR | Maximum
Subsequent Event [Line Items]
Basis spread on variable rate (as a percent)			2.25%
Credit facility | Revolver loan | Base rate | Minimum
Subsequent Event [Line Items]
Basis spread on variable rate (as a percent)			0.25%
Credit facility | Revolver loan | Base rate | Maximum
Subsequent Event [Line Items]
Basis spread on variable rate (as a percent)			1.25%
Credit facility | Term loans
Subsequent Event [Line Items]
Maximum borrowing capacity			$ 200,000,000
Alaska communications
Subsequent Event [Line Items]
Transaction costs				$ 1,500,000
Subsequent event | Credit facility | Revolver loan
Subsequent Event [Line Items]
Borrowings		$ 73,000,000
Subsequent event | Alaska communications
Subsequent Event [Line Items]
Purchase price	$ 340,000,000
Mezzanine equity contribution received from minority investor	$ 70,000,000				$ 70,000,000
Ownership interest (as a percent)	52.00%				52.00%
Transaction costs					$ 2,400,000
Subsequent event | Alaska communications | Alaska credit facility
Subsequent Event [Line Items]
Maximum borrowing capacity	$ 210,000,000				210,000,000
Borrowings	$ 220,000,000				$ 220,000,000
Consolidated EBITDA					12 months
Frequency of periodic payment	quarterly
Net total leverage ratio	4
Fixed charge coverage ratio	1.25
Subsequent event | Alaska communications | Alaska credit facility | Period of fourth quarter of 2023 To third quarter 2024
Subsequent Event [Line Items]
Periodic payment, principal	$ 1,312,500
Subsequent event | Alaska communications | Alaska credit facility | Period of fourth quarter of 2024 To third quarter of 2026
Subsequent Event [Line Items]
Periodic payment, principal	$ 2,625,000
Subsequent event | Alaska communications | Alaska credit facility | Period of second quarter of 2024
Subsequent Event [Line Items]
Net total leverage ratio	3.75
Subsequent event | Alaska communications | Alaska credit facility | LIBOR | Minimum
Subsequent Event [Line Items]
Basis spread on variable rate (as a percent)	3.00%
Subsequent event | Alaska communications | Alaska credit facility | LIBOR | Maximum
Subsequent Event [Line Items]
Basis spread on variable rate (as a percent)	4.00%
Subsequent event | Alaska communications | Alaska credit facility | Base rate
Subsequent Event [Line Items]
Basis spread on variable rate (as a percent)	1.00%
Subsequent event | Alaska communications | Alaska credit facility | Revolver loan
Subsequent Event [Line Items]
Maximum borrowing capacity	$ 35,000,000				$ 35,000,000
Borrowings					10,000,000
Subsequent event | Alaska communications | Alaska credit facility | Term loans
Subsequent Event [Line Items]
Borrowings					210,000,000
Subsequent event | Alaska communications | Alaska credit facility | Incremental term loans | Minimum
Subsequent Event [Line Items]
Maximum borrowing capacity	$ 70,000,000				$ 70,000,000