LEASES - Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating Lease Cost:
Fixed lease cost	$ 2,969	$ 4,014
Variable lease cost	1,512	1,707
Total lease cost	4,481	5,721
Sublease income	$ 724	$ 478