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LEASES - Maturities of lease liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Lessor, Lease, Description [Line Items] |  |  |
Year 1 | $ 19,417 | $ 20,474 |
Year 2 | 17,836 | 17,941 |
Year 3 | 14,805 | 16,634 |
Year 4 | 10,505 | 13,640 |
Year 5 | 8,096 | 9,610 |
Thereafter | 76,452 | 65,902 |
Total lease payments | 147,111 | 144,201 |
Less imputed interest | (53,794) | (42,333) |
Total | $ 93,317 | $ 101,868 |
Operating Lease, Liability, Statement of Financial Position [Extensible List] | Lease Liability, Current, Lease Liability, Noncurrent | Lease Liability, Current, Lease Liability, Noncurrent |
Finance lease liability |  |  |
Year 1 | $ 1,403 | $ 1,269 |
Year 2 | 1,342 | 1,278 |
Year 3 | 978 | 1,169 |
Year 4 | 504 | 975 |
Year 5 | 495 | 484 |
Thereafter | 2,651 | 3,145 |
Total lease payments | 7,373 | 8,320 |
Less imputed interest | (1,914) | (2,268) |
Finance lease liability | $ 5,459 | $ 6,052 |
Finance Lease, Liability, Statement of Financial Position [Extensible List] | Lease Liability, Current, Lease Liability, Noncurrent | Lease Liability, Current, Lease Liability, Noncurrent |
Maturities of future undiscounted lease payments |  |  |
2023 | $ 6,222 |  |
2024 | 5,817 |  |
2025 | 5,604 |  |
2026 | 5,247 |  |
2027 | 4,199 |  |
Thereafter | 9,309 |  |
Total future lease payments | 36,398 |  |
Network asset |  |  |
Finance lease liability |  |  |
Lease income | $ 6,300 | $ 4,500 | $ 1,600
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] | Revenues | Revenues | Revenues

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