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BORROWED FUNDS - Subordinated Debt (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2021
Dec. 31, 2022
Debt Instrument [Line Items]        
Subordinated debt, net $ 24,634,000     $ 24,607,000
3.25% maturing in June 2031 and redeemable at par in June 2026        
Debt Instrument [Line Items]        
Aggregate par value $ 25,000,000   $ 25,000,000.0 $ 25,000,000
Stated interest rate 3.25%   3.25% 3.25%
Debt issuance costs     $ 563,000  
Subordinated debt, net $ 24,634,000   $ 24,437,000 $ 24,607,000
Amortization of debt issuance costs $ 27,000 $ 26,000    
Effective interest rate 3.74%     3.74%
3.25% maturing in June 2031 and redeemable at par in June 2026 | Debt Instrument, Redemption, Period One        
Debt Instrument [Line Items]        
Stated interest rate     3.25%  
Debt Instrument, Redemption Period, End Date     Jun. 01, 2026  
3.25% maturing in June 2031 and redeemable at par in June 2026 | Debt Instrument, Redemption, Period Two        
Debt Instrument [Line Items]        
Debt Instrument, Redemption Period, Start Date     Jun. 01, 2026  
Debt Instrument, Redemption Period, End Date     Jun. 01, 2031  
Debt Instrument, Basis Spread on Variable Rate     2.59%