BANK PREMISES AND EQUIPMENT - Summary of Bank Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
BANK PREMISES AND EQUIPMENT
Property, plant and equipment	$ 51,387	$ 52,373
Less: accumulated depreciation	(29,755)	(30,799)
Net	21,632	21,574
Land
BANK PREMISES AND EQUIPMENT
Property, plant and equipment	3,573	3,623
Buildings and improvements
BANK PREMISES AND EQUIPMENT
Property, plant and equipment	32,582	32,332
Furniture and equipment
BANK PREMISES AND EQUIPMENT
Property, plant and equipment	14,618	14,886
Construction in Progress
BANK PREMISES AND EQUIPMENT
Property, plant and equipment	$ 614	$ 1,532