GOVERNMENT SUPPORT AND SPECTRUM MATTERS - Replace and Remove Program (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Beginning balance, Total spend	$ 233,696	$ 168,395
Amounts spent	15,353	32,089
Amounts transferred	(9,030)
Ending balance, Total spend	240,019	200,484
Beginning balance, Total reimbursements	(201,804)	(130,721)
Reimbursements received	(15,876)	(37,026)
Ending balance, Total reimbursements	(217,680)	(167,747)
Amount pending reimbursement	22,339	32,737
Capital Amount
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Beginning balance, Total spend	194,897	140,949
Amounts spent	12,484	26,878
Amounts transferred	(9,030)
Ending balance, Total spend	198,351	167,827
Beginning balance, Total reimbursements	(163,122)	(103,540)
Reimbursements received	(14,336)	(31,940)
Ending balance, Total reimbursements	(177,458)	(135,480)
Amount pending reimbursement	20,893	32,347
Operating Amount
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Beginning balance, Total spend	38,799	27,446
Amounts spent	2,869	5,211
Ending balance, Total spend	41,668	32,657
Beginning balance, Total reimbursements	(38,682)	(27,181)
Reimbursements received	(1,540)	(5,086)
Ending balance, Total reimbursements	(40,222)	(32,267)
Amount pending reimbursement	$ 1,446	$ 390