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FAIR VALUE OF ASSETS AND LIABILITIES (Narrative) (Details)
$ in Thousands
Sep. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Sep. 30, 2024
USD ($)
Dec. 31, 2023
USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Loans, weighted average discount rate, percent 6.41% 7.07%    
Time deposits, weighted average discount rate, percent 4.09% 4.50%    
Long -term debt, weighted average discount rate, percent 6.76% 6.68%    
Mortgage revenue bonds        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Aggregate fair value $ 6,813 $ 6,847 $ 12,258 $ 13,590
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 0.0578 0.0622 0.0572  
Mortgage revenue bonds | States and political subdivisions        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Aggregate fair value $ 6,136 $ 6,165 $ 6,338 6,436
Mortgage revenue bonds | Residential - Non-government agencies        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Aggregate fair value $ 677 $ 682 $ 718 $ 714