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FAIR VALUE OF ASSETS AND LIABILITIES (Narrative) (Details)
 3 Months Ended
Mar. 31, 2023
USD ($)
security
Dec. 31, 2022
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Loans, weighted average discount rate, percent 7.33%      
Time deposits, weighted average discount rate, percent 5.14%      
Long -term debt, weighted average discount rate, percent 6.81%      
Transfers of financial assets (liability) out of Level 3 $ 0      
Mortgage revenue bonds        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value $ 7,305,000 $ 7,268,000 $ 8,081,000 $ 8,619,000
Mortgage revenue bonds | States and political subdivisions        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Number of investment securities held | security 2      
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value $ 6,594,000 6,584,000 7,229,000 7,681,000
Mortgage revenue bonds | Residential - Non-government agencies        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Number of investment securities held | security 2      
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value $ 711,000 $ 684,000 $ 852,000 $ 938,000
Weighted average | Mortgage revenue bonds | Weighted-average discount rate        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Weighted average prepayment speed assumption 0.0615 0.0641