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SEGMENT REPORTING (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Oct. 01, 2022 USD ($)
Segment reporting
Number of reportable segments | segment	3
Revenue
Revenue	$ 725,745	$ 602,707	$ 455,444
Depreciation	135,137	102,731	86,504
Amortization of intangibles from acquisitions	13,016	7,775	1,807
Non-cash stock-based compensation	7,406	6,581	5,912
Operating income (loss)	7,942	(15,026)	9,180
Segment Assets
Cash, cash equivalents, and short term investments	54,960	79,901
Total current assets	229,688	232,617
Fixed assets, net	1,055,954	943,209
Goodwill	40,104	40,104	60,691
Total assets	1,707,869	1,608,604
Total current liabilities	233,180	220,944
Total debt	467,248	366,544
Capital Expenditures
Capital expenditures	168,019	106,142
Communication services
Revenue
Revenue	692,221	549,620	433,509
Mobility
Revenue
Revenue	110,018	102,301	92,762
Mobility - Business
Revenue
Revenue	16,058	8,385	4,723
Mobility - Consumer
Revenue
Revenue	93,960	93,916	88,039
Fixed
Revenue
Revenue	438,384	328,643	252,644
Fixed - Business
Revenue
Revenue	196,638	120,741	78,013
Fixed - Consumer
Revenue
Revenue	241,746	207,902	174,631
Carrier services
Revenue
Revenue	142,323	117,730	86,568
Other communication services
Revenue
Revenue	1,496	946	1,535
Construction.
Revenue
Revenue	15,762	35,889	10,913
Other revenue
Revenue
Revenue	17,762	17,198	11,022
Renewable Energy
Revenue
Revenue		417	4,555
Managed Services
Revenue
Revenue	17,762	16,781	6,467
Corporate and Other
Revenue
Depreciation	3,549	5,081	6,486
Non-cash stock-based compensation	6,779	6,160	5,586
Operating income (loss)	(37,613)	(32,450)	(33,966)
Segment Assets
Cash, cash equivalents, and short term investments	6,474	7,628
Total current assets	7,848	8,614
Fixed assets, net	7,538	10,103
Total assets	69,233	83,567
Total current liabilities	26,326	20,548
Total debt	99,000	61,499
Capital Expenditures
Capital expenditures	1,045	2,922
International Telecom
Segment Assets
Goodwill	4,836	4,836	25,423
International Telecom | Operating segments
Revenue
Revenue	355,581	342,859	328,633
Depreciation	56,568	53,858	54,477
Amortization of intangibles from acquisitions	1,572	1,648	1,807
Non-cash stock-based compensation	240	128	49
Operating income (loss)	52,011	33,899	58,924
Segment Assets
Cash, cash equivalents, and short term investments	25,345	43,128
Total current assets	105,324	108,677
Fixed assets, net	462,447	452,856
Goodwill	4,835	4,835
Total assets	643,664	630,515
Total current liabilities	86,738	91,090
Total debt	59,659	64,243
Capital Expenditures
Capital expenditures	70,385	49,985
International Telecom | Operating segments | Communication services
Revenue
Revenue	350,651	337,713	322,166
International Telecom | Operating segments | Mobility
Revenue
Revenue	102,431	93,367	83,136
International Telecom | Operating segments | Mobility - Business
Revenue
Revenue	14,830	6,983	4,319
International Telecom | Operating segments | Mobility - Consumer
Revenue
Revenue	87,601	86,384	78,817
International Telecom | Operating segments | Fixed
Revenue
Revenue	233,311	233,463	230,375
International Telecom | Operating segments | Fixed - Business
Revenue
Revenue	69,903	67,458	67,776
International Telecom | Operating segments | Fixed - Consumer
Revenue
Revenue	163,408	166,005	162,599
International Telecom | Operating segments | Carrier services
Revenue
Revenue	13,459	9,937	7,120
International Telecom | Operating segments | Other communication services
Revenue
Revenue	1,450	946	1,535
International Telecom | Operating segments | Other revenue
Revenue
Revenue	4,930	5,146	6,467
International Telecom | Operating segments | Managed Services
Revenue
Revenue	4,930	5,146	6,467
US Telecom
Segment Assets
Goodwill	35,268	35,268	35,268	$ 35,300
US Telecom | Operating segments
Revenue
Revenue	370,164	259,431	122,256
Depreciation	75,020	43,604	23,325
Amortization of intangibles from acquisitions	11,444	6,127
Non-cash stock-based compensation	387	271	15
Operating income (loss)	(5,655)	(14,016)	7,971
Segment Assets
Cash, cash equivalents, and short term investments	22,679	28,486
Total current assets	116,038	111,741
Fixed assets, net	585,969	480,250
Goodwill	35,269	35,269
Total assets	980,543	877,041
Total current liabilities	119,755	108,950
Total debt	308,589	240,802
Capital Expenditures
Capital expenditures	96,589	53,235
US Telecom | Operating segments | Communication services
Revenue
Revenue	341,570	211,907	111,343
US Telecom | Operating segments | Mobility
Revenue
Revenue	7,587	8,934	9,626
US Telecom | Operating segments | Mobility - Business
Revenue
Revenue	1,228	1,402	404
US Telecom | Operating segments | Mobility - Consumer
Revenue
Revenue	6,359	7,532	9,222
US Telecom | Operating segments | Fixed
Revenue
Revenue	205,073	95,180	22,269
US Telecom | Operating segments | Fixed - Business
Revenue
Revenue	126,735	53,283	10,237
US Telecom | Operating segments | Fixed - Consumer
Revenue
Revenue	78,338	41,897	12,032
US Telecom | Operating segments | Carrier services
Revenue
Revenue	128,864	107,793	79,448
US Telecom | Operating segments | Other communication services
Revenue
Revenue	46
US Telecom | Operating segments | Construction.
Revenue
Revenue	15,762	35,889	10,913
US Telecom | Operating segments | Other revenue
Revenue
Revenue	12,832	11,635
US Telecom | Operating segments | Managed Services
Revenue
Revenue	12,832	11,635
Renewable Energy | Operating segments
Revenue
Revenue		417	4,555
Depreciation		188	2,216
Non-cash stock-based compensation		22	262
Operating income (loss)	(801)	(2,459)	(23,749)
Segment Assets
Cash, cash equivalents, and short term investments	462	659
Total current assets	478	3,585
Total assets	14,429	17,481
Total current liabilities	$ 361	356
Renewable Energy | Operating segments | Other revenue
Revenue
Revenue		417	4,555
Renewable Energy | Operating segments | Renewable Energy
Revenue
Revenue		$ 417	$ 4,555

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