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Commitments and Financial Instruments with Off-Balance-Sheet Risk (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2025
Dec. 31, 2024
Loan commitments to extend credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Off-balance-sheet instruments $ 1,415,510 $ 1,304,735
Standby letters of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Off-balance-sheet instruments $ 22,380 21,828
Standby letters of credit | Minimum    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Letter of credit term 2 months  
Standby letters of credit | Maximum    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Letter of credit term 1 year  
Commercial and similar letters of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Off-balance-sheet instruments $ 0 $ 161
Commercial and similar letters of credit | Minimum    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Letter of credit term 2 months  
Commercial and similar letters of credit | Maximum    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Letter of credit term 6 months