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FAIR VALUE OF FINANCIAL ASSETS AND FINANCIAL LIABILITIES (Narrative) (Details)
12 Months Ended
Dec. 31, 2023
USD ($)
security
bond
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
FAIR VALUE OF FINANCIAL ASSETS AND LIABILITIES      
Loans, weighted average discount rate, percent 6.86% 7.44%  
Time deposits, weighted average discount rate, percent 5.48% 4.96%  
Long -term debt, weighted average discount rate, percent 6.83% 7.28%  
Transfers of financial assets (liability) out of Level 3 $ 0    
Transfers of financial assets (liability) into Level 3 $ 0    
Mortgage revenue bonds      
FAIR VALUE OF FINANCIAL ASSETS AND LIABILITIES      
Number of investment securities held | bond 2    
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value $ 7,150,000 $ 7,268,000 $ 8,619,000
Mortgage revenue bonds | Weighted average | Weighted-average discount rate      
FAIR VALUE OF FINANCIAL ASSETS AND LIABILITIES      
Debt Instrument, Measurement Input 0.0612 0.0641  
Mortgage revenue bonds | States and political subdivisions      
FAIR VALUE OF FINANCIAL ASSETS AND LIABILITIES      
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value $ 6,436,000 $ 6,584,000 7,681,000
Mortgage revenue bonds | Residential - Non-Government Agencies      
FAIR VALUE OF FINANCIAL ASSETS AND LIABILITIES      
Number of investment securities held | security 2    
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value $ 714,000 $ 684,000 $ 938,000