LEASES - Future Operating Lease Liability Maturities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Future operating lease liability maturities
2021	$ 1,258		$ 1,258
2022	2,639		2,639
2023	2,690		2,690
2024	2,540		2,540
2025	2,539		2,539
2026 and thereafter	99,290		99,290
Total operating lease payments	110,956		110,956
Less: Imputed interest	(57,480)		(57,480)
Operating lease liabilities	53,476		53,476		$ 53,595
Operating lease amount paid	635	$ 577	1,253	$ 1,142
Finance lease, amount paid	445		861
Future finance lease liability maturities
2021	1,075		1,075
2022	2,183		2,183
2023	2,183		2,183
2024	2,183		2,183
2025	2,224		2,224
2026 and thereafter	122,932		122,932
Total lease payments	132,780		132,780
Less: Imputed interest	(66,982)		(66,982)
Finance lease liabilities	$ 65,798		$ 65,798		$ 65,599