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Derivative Financial Instruments - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Derivatives          
Accumulated derivative credit valuation adjustment $ 38,000   $ 38,000   $ 117,000
Interest Rate Swap Agreements on Loans with Third-party Counter Parties          
Derivatives          
Interest rate swaps - assets, fair value 39,800,000   39,800,000    
Interest rate swaps - liabilities, fair value 11,400,000   11,400,000    
Interest Rate Swap Related to AFS Securities | Designated as Hedging Instrument          
Derivatives          
Unrealized gains on interest rate swaps 246,000 $ 421,000 24,000 $ 353,000  
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 $ 11,600,000 $ 5,300,000 6,500,000 7,500,000  
Gain recognized in income on ineffective portion of hedges     $ 0 $ 0