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Derivative Financial Instruments (Narrative Disclosures) (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Derivatives          
Accumulated Derivative Credit Valuation Adjustment $ 191,000   $ 191,000   $ 191,000
Unrealized gains on interest rate swaps 3,452,000 $ 520,000 9,496,000 $ 2,338,000  
Interest rate swap agreements on loans with third-party counter parties          
Derivatives          
Interest rate swaps - liabilities, fair value 66,200,000   66,200,000    
Interest rate swaps - assets, fair value 0   0    
Interest rate swap related to AFS securities | Designated as Hedging Instrument          
Derivatives          
Unrealized gains on interest rate swaps 215,000   592,000    
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 3,200,000   8,900,000    
Gain recognized in income on ineffective portion of hedges $ 0   $ 0