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Derivative Financial Instruments (Narrative Disclosures) (Details) - USD ($)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Derivatives      
Accumulated Derivative Credit Valuation Adjustment $ 117,000 $ 38,000  
Gain recognized in income on ineffective portion of hedges 0    
Interest rate swap agreements on loans with third-party counter parties      
Derivatives      
Interest rate swaps - assets, fair value 51,100,000    
Interest rate swaps - liabilities, fair value 7,900,000    
Interest rate swap related to AFS securities | Designated as Hedging Instrument      
Derivatives      
Unrealized gains on interest rate swaps 22,000 602,000 $ 0
Gain recognized in income on ineffective portion of hedges 0    
Interest rate swap related to FHLB borrowings | Designated as Hedging Instrument      
Derivatives      
Unrealized gains on interest rate swaps $ (3,500,000) $ 8,500,000 $ 3,600,000