LEASES - Lease Term and Discount Rate and Other Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
LEASES
Weighted-average remaining lease term - operating leases (years)	8 years 7 months 6 days	9 years 7 months 6 days
Weighted-average discount rate - operating leases	6.10%	6.10%
Cash paid for amounts included in the measurement of operating lease liabilities	$ 1,249	$ 1,133