OPERATING LEASES - Supplemental Lease Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
OPERATING LEASES
Weighted-average remaining lease term	5 years 9 months 18 days
Weighted-average discount rate (as a percent)	3.06%
Operating cash flows from operating leases (cash payments)	$ 1,960	$ 2,054
Operating cash flows from operating leases (lease liability reduction)	1,643	1,689
Operating lease right-of-use assets obtained in exchange for leases entered into during the period	$ 560	$ 131