PREMISES AND EQUIPMENT - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Amortization of right-of-use assets, finance leases	$ 59	$ 65
Interest on lease liabilities, finance leases	2	4
Operating lease cost	1,966	2,072
Short-term lease cost	5	27
Variable lease cost	38	38
Total lease cost	$ 2,070	$ 2,206