RIGHT-OF-USE ASSETS AND OPERATING LEASE LIABILITIES - OPERATING LEASE EXPENSE (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Operating lease expense:
Total operating lease expense	$ 1,895	$ 1,791	$ 3,737	$ 3,583
Cash paid for amounts included in the measurement of operating lease liabilities	1,707	1,799	3,412	3,597
Cash paid for variable rent payments not included in measurement of operating lease liabilities	$ 151		$ 302
Weighted average remaining term in years	8 years 4 months 20 days		8 years 4 months 20 days		7 years 6 months 25 days
Weighted average discount rate	2.64%		2.64%		3.05%
Related Party
Operating lease expense:
Variable lease expense	$ 1,269	1,218	$ 2,535	2,438
Fixed lease expense	57	34	92	68
Third Party
Operating lease expense:
Variable lease expense	220	197	417	393
Fixed lease expense	$ 349	$ 342	$ 693	$ 684