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Derivative Financial Instruments (Narrative Disclosures) (Details) - USD ($)
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Derivatives      
Accumulated Derivative Credit Valuation Adjustment $ 117,000   $ 117,000
Unrealized gains on interest rate swaps 4,922,000 $ (1,562,000)  
Interest rate swap agreements on loans with third-party counter parties      
Derivatives      
Interest rate swaps - assets, fair value 61,100,000    
Interest rate swaps - liabilities, fair value 2,800,000    
Interest rate swap related to AFS securities | Designated as Hedging Instrument      
Derivatives      
Unrealized gains on interest rate swaps 140,000 175,000  
Gain recognized in income on ineffective portion of hedges 0 0  
Interest rate swap related to FHLB borrowings | Designated as Hedging Instrument      
Derivatives      
Unrealized gains on interest rate swaps 4,800,000 1,400,000  
Gain recognized in income on ineffective portion of hedges $ 0 $ 0