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PREMISES AND EQUIPMENT - Additional information (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Premises and Equipment      
Depreciation and amortization expense $ 1,700,000 $ 1,600,000 $ 1,500,000
Director      
Premises and Equipment      
Expense paid to related party $ 241,000 $ 232,000 $ 218,000