LONG-TERM DEBT - Debt Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term Debt	$ 557,356	$ 516,870
Total Debt
Debt Instrument [Line Items]
Year ending December 31, 2025	8,226
Year ending December 31, 2026	73,594
Year ending December 31, 2027	22,848
Year ending December 31, 2028	87,228
Year ending December 31, 2029	371,305
Thereafter	6,239
Total	569,440
Debt Discounts	(12,084)
Long-term Debt	557,356
Customer receivable credit facility
Debt Instrument [Line Items]
Year ending December 31, 2025	8,031
Year ending December 31, 2026	8,409
Year ending December 31, 2027	8,807
Year ending December 31, 2028	9,229
Year ending December 31, 2029	6,041
Thereafter	4,085
Total	44,602
Debt Discounts	(368)
Long-term Debt	44,234
Corporate and Other
Debt Instrument [Line Items]
Year ending December 31, 2025	4,757
Year ending December 31, 2026	8,125
Year ending December 31, 2027	9,750
Year ending December 31, 2028	68,370
Year ending December 31, 2029	93,556
Total	184,558
Debt Discounts	(3,293)
Long-term Debt	181,265	159,009
US Telecom \| Operating segments
Debt Instrument [Line Items]
Long-term Debt	316,241	293,607
US Telecom \| Operating segments \| Total Debt
Debt Instrument [Line Items]
Year ending December 31, 2025	3,469
Year ending December 31, 2026	5,469
Year ending December 31, 2027	13,098
Year ending December 31, 2028	18,858
Year ending December 31, 2029	277,749
Thereafter	6,239
Total	324,882
Debt Discounts	(8,641)
Long-term Debt	316,241
International Telecom \| Operating segments
Debt Instrument [Line Items]
Long-term Debt	59,850	$ 64,254
International Telecom \| Operating segments \| Total Debt
Debt Instrument [Line Items]
Year ending December 31, 2026	60,000
Total	60,000
Debt Discounts	(150)
Long-term Debt	$ 59,850

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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