SEGMENT REPORTING (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($) segment	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Segment reporting
Number of reportable segments | segment	2
Number of operating segments | segment	2
Revenue
Total Revenue	$ 179,294	$ 186,794
Operating Expenses
Selling, general and administrative	55,228	61,315
Stock-based compensation	1,905	1,909
Transaction-related charges	1,436	19
Restructuring and reorganization expenses	1,830	1,190
Depreciation and amortization	34,527	34,340
Amortization of intangibles from acquisitions	1,226	1,980
(Gain) loss on disposition of assets and transfers	750	(493)
Total Operating Expenses	176,627	182,220
Income from operations	2,667	4,574
Other income (expenses)
Interest income	272	445
Interest expense	(11,950)	(11,520)
Other income	(2,568)	172
Other expense	(14,246)	(10,903)
Loss before income taxes	(11,579)	(6,329)
Net (income) loss attributable to noncontrolling interests	2,459	1,633
Segment Assets
Cash, cash equivalents, and restricted cash	97,259	69,218	$ 89,244	$ 62,167
Total current assets	305,707		309,161
Fixed assets, net	1,029,165		1,040,193
Goodwill	4,835		4,835
Total assets	1,707,449		1,727,103
Total current liabilities	263,672		267,314
Total debt, including current portion	562,384		557,356
Capital Expenditures
Capital expenditures	43,277	49,489
Reimbursable capital expenditures	22,445	13,473
Communication Services
Revenue
Total Revenue	174,031	181,268
Operating Expenses
Cost of services	78,224	80,390
Mobility
Revenue
Total Revenue	26,080	26,875
Mobility - Business
Revenue
Total Revenue	4,888	4,882
Mobility - Consumer
Revenue
Total Revenue	21,192	21,993
Fixed
Revenue
Total Revenue	113,024	119,205
Fixed - Business
Revenue
Total Revenue	47,737	53,497
Fixed - Consumer
Revenue
Total Revenue	65,287	65,708
Carrier services
Revenue
Total Revenue	33,131	33,626
Other
Revenue
Total Revenue	1,796	1,562
Construction
Revenue
Total Revenue	1,046	1,586
Operating Expenses
Cost of services	1,501	1,570
Other
Revenue
Total Revenue	4,217	3,940
Managed Services
Revenue
Total Revenue	4,217	3,940
Corporate and Other
Operating Expenses
Selling, general and administrative	5,564	6,607
Stock-based compensation	1,612	1,754
Transaction-related charges	1,436	19
Restructuring and reorganization expenses	190
Depreciation and amortization	866	78
(Gain) loss on disposition of assets and transfers		(601)
Total Operating Expenses	9,668	7,708
Income from operations	(9,668)	(7,708)
Segment Assets
Cash, cash equivalents, and restricted cash	1,116		2,409
Total current assets	8,060		10,541
Fixed assets, net	8,272		7,707
Total assets	91,834		93,547
Total current liabilities	36,808		34,236
Total debt, including current portion	186,648		181,265
Capital Expenditures
Capital expenditures	2	1,341
Corporate and Other | Communication Services
Operating Expenses
Cost of services		(149)
International Telecom | Operating segments
Revenue
Total Revenue	94,496	93,059
Operating Expenses
Selling, general and administrative	27,143	29,632
Stock-based compensation	215	23
Restructuring and reorganization expenses	1,506	1,190
Depreciation and amortization	15,377	16,124
Amortization of intangibles from acquisitions	251	251
(Gain) loss on disposition of assets and transfers	291
Total Operating Expenses	79,746	81,374
Income from operations	14,750	11,685
Other income (expenses)
Net (income) loss attributable to noncontrolling interests	(1,474)	(1,436)
Segment Assets
Cash, cash equivalents, and restricted cash	51,614		35,231
Total current assets	150,933		129,866
Fixed assets, net	461,077		466,861
Goodwill	4,835		4,835
Total assets	689,243		675,642
Total current liabilities	96,590		85,588
Total debt, including current portion	59,875		59,850
Capital Expenditures
Capital expenditures	10,803	16,915
International Telecom | Operating segments | Communication Services
Revenue
Total Revenue	93,050	91,750
Operating Expenses
Cost of services	34,963	34,154
International Telecom | Operating segments | Mobility
Revenue
Total Revenue	26,041	26,037
International Telecom | Operating segments | Mobility - Business
Revenue
Total Revenue	4,849	4,808
International Telecom | Operating segments | Mobility - Consumer
Revenue
Total Revenue	21,192	21,229
International Telecom | Operating segments | Fixed
Revenue
Total Revenue	61,365	61,321
International Telecom | Operating segments | Fixed - Business
Revenue
Total Revenue	18,493	18,532
International Telecom | Operating segments | Fixed - Consumer
Revenue
Total Revenue	42,872	42,789
International Telecom | Operating segments | Carrier services
Revenue
Total Revenue	3,904	3,574
International Telecom | Operating segments | Other
Revenue
Total Revenue	1,740	818
International Telecom | Operating segments | Other
Revenue
Total Revenue	1,446	1,309
International Telecom | Operating segments | Managed Services
Revenue
Total Revenue	1,446	1,309
US Telecom | Operating segments
Revenue
Total Revenue	84,798	93,735
Operating Expenses
Selling, general and administrative	22,521	25,076
Stock-based compensation	78	132
Restructuring and reorganization expenses	134
Depreciation and amortization	18,284	18,138
Amortization of intangibles from acquisitions	975	1,729
(Gain) loss on disposition of assets and transfers	459	108
Total Operating Expenses	87,213	93,138
Income from operations	(2,415)	597
Other income (expenses)
Net (income) loss attributable to noncontrolling interests	3,933	3,069
Segment Assets
Cash, cash equivalents, and restricted cash	44,529		51,604
Total current assets	146,714		168,754
Fixed assets, net	559,816		565,625
Total assets	926,372		957,914
Total current liabilities	130,274		147,490
Total debt, including current portion	315,861		$ 316,241
Capital Expenditures
Capital expenditures	32,472	31,233
US Telecom | Operating segments | Communication Services
Revenue
Total Revenue	80,981	89,518
Operating Expenses
Cost of services	43,261	46,385
US Telecom | Operating segments | Mobility
Revenue
Total Revenue	39	838
US Telecom | Operating segments | Mobility - Business
Revenue
Total Revenue	39	74
US Telecom | Operating segments | Mobility - Consumer
Revenue
Total Revenue		764
US Telecom | Operating segments | Fixed
Revenue
Total Revenue	51,659	57,884
US Telecom | Operating segments | Fixed - Business
Revenue
Total Revenue	29,244	34,965
US Telecom | Operating segments | Fixed - Consumer
Revenue
Total Revenue	22,415	22,919
US Telecom | Operating segments | Carrier services
Revenue
Total Revenue	29,227	30,052
US Telecom | Operating segments | Other
Revenue
Total Revenue	56	744
US Telecom | Operating segments | Construction
Revenue
Total Revenue	1,046	1,586
Operating Expenses
Cost of services	1,501	1,570
US Telecom | Operating segments | Other
Revenue
Total Revenue	2,771	2,631
US Telecom | Operating segments | Managed Services
Revenue
Total Revenue	$ 2,771	$ 2,631