PROPERTY AND EQUIPMENT AND INTANGIBLE ASSETS - Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Intangible Assets
Intangible Assets	$ 355,255	$ 355,360
Accumulated Amortization	$ (344,173)	(341,959)
Minimum
Intangible Assets
Weighted-average useful life (in years)	5 years
Maximum
Intangible Assets
Weighted-average useful life (in years)	20 years
Customer relationships
Intangible Assets
Intangible Assets	$ 274,155	274,260
Accumulated Amortization	(272,602)	(271,873)
Patents
Intangible Assets
Intangible Assets	51,400	51,400
Accumulated Amortization	(51,400)	(51,400)
Trademarks and licenses
Intangible Assets
Intangible Assets	29,700	29,700
Accumulated Amortization	(20,171)	(18,686)
Other intangible assets
Intangible Assets
Accumulated Amortization	$ 2,000	2,000	$ 2,000
Other intangible assets | Minimum
Intangible Assets
Weighted-average useful life (in years)	5 years
Other intangible assets | Maximum
Intangible Assets
Weighted-average useful life (in years)	20 years
Regulatory authorizations
Intangible Assets
Intangible Assets	$ 10,295	12,754
Accumulated Amortization	$ (5,597)	$ (4,935)
Weighted-average useful life (in years)	11 years