LEASES - Future Operating Lease Liability Maturities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Future operating lease liability maturities
2020	$ 1,157		$ 1,157
2021	2,327		2,327
2022	2,461		2,461
2023	2,523		2,523
2024	2,373		2,373
2025 and thereafter	91,241		91,241
Total operating lease payments	102,082		102,082
Less: Imputed interest	(55,718)		(55,718)
Lease liabilities	46,364		46,364		$ 46,391
Operating lease amount paid	$ 600	$ 600	$ 1,100	$ 1,300