BANK PREMISES AND EQUIPMENT - Summary of Bank Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
BANK PREMISES AND EQUIPMENT
Property, plant and equipment	$ 52,373	$ 52,226
Less: accumulated depreciation	(30,799)	(31,543)
Net	21,574	20,683
Land
BANK PREMISES AND EQUIPMENT
Property, plant and equipment	3,623	3,623
Buildings and improvements
BANK PREMISES AND EQUIPMENT
Property, plant and equipment	32,332	32,606
Furniture and equipment
BANK PREMISES AND EQUIPMENT
Property, plant and equipment	14,886	15,162
Construction in Progress
BANK PREMISES AND EQUIPMENT
Property, plant and equipment	$ 1,532	$ 835