LEASES - Maturities of lease liabilities (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
LEASES
2025 (excluding the six months ended June 30, 2025)	$ 10,736		$ 10,736
Year 1	18,318		18,318		$ 20,764
Year 2	15,207		15,207		15,881
Year 3	11,836		11,836		12,949
Year 4	8,833		8,833		9,901
Year 5					7,134
Thereafter	80,756		80,756
Thereafter					79,843
Total lease payments	145,686		145,686		146,472
Less imputed interest	(56,032)		(56,032)		(57,512)
Total	$ 89,654		$ 89,654		$ 88,960
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Lease Liability, Current, Lease Liability, Noncurrent		Lease Liability, Current, Lease Liability, Noncurrent		Lease Liability, Current, Lease Liability, Noncurrent
Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract]
2025 (excluding the six months ended June 30, 2025)	$ 686		$ 686
Year 1	1,043		1,043		$ 1,649
Year 2	1,006		1,006		847
Year 3	737		737		825
Year 4	537		537		632
Year 5					516
Thereafter	1,658		1,658
Thereafter					1,630
Total lease payments	5,667		5,667		6,099
Less imputed interest	(1,307)		(1,307)		(1,402)
Total	$ 4,360		$ 4,360		$ 4,697
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Lease Liability, Current, Lease Liability, Noncurrent		Lease Liability, Current, Lease Liability, Noncurrent		Lease Liability, Current, Lease Liability, Noncurrent
Maturities of future undiscounted lease payments
2025 (excluding the six months ended June 30, 2025)	$ 4,541		$ 4,541
2026	7,904		7,904
2027	6,579		6,579
2028	5,885		5,885
2029	5,206		5,206
Thereafter	5,036		5,036
Total future lease payments	35,151		35,151
Lease income	$ 2,048	$ 2,111	4,031	$ 4,217
Network asset
Maturities of future undiscounted lease payments
Lease income			$ 4,000	$ 4,200

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

No definition available.