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FAIR VALUE OF ASSETS AND LIABILITIES (Narrative) (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Sep. 30, 2023
Dec. 31, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Loans, weighted average discount rate, percent 6.28% 6.86%    
Time deposits, weighted average discount rate, percent 4.75% 5.48%    
Long -term debt, weighted average discount rate, percent 6.15% 6.83%    
Weighted average | Weighted-average discount rate | Interest rate swap agreements | Derivatives Not in Cash Flow Hedging Relationship | Derivative Financial Instruments Designated as Hedging Instruments        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Derivative, measurement input 0.0342 0.0334    
Mortgage revenue bonds        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Aggregate fair value $ 12,258 $ 13,590 $ 17,169 $ 13,254
Mortgage revenue bonds | Weighted average | Weighted-average discount rate        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Weighted average prepayment speed assumption 0.0572 0.0612    
Mortgage revenue bonds | States and political subdivisions        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Aggregate fair value $ 6,338 $ 6,436 6,363 6,584
Mortgage revenue bonds | Residential - Non-government agencies        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Aggregate fair value $ 718 $ 714 $ 671 $ 684