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Fair Value Measurements - Additional Information (Details)
 9 Months Ended
Sep. 30, 2025
USD ($)
loan
Sep. 30, 2024
USD ($)
loan
Dec. 31, 2024
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis      
Residential mortgage loans held for sale period 45 days    
Interest Rate Lock Commitments, Average Percentage Of Estimated Pull Through Rate To Calculate Fair Value 0.881    
Loans $ 7,429,501,000   $ 7,751,143,000
Fair value, non-recurring basis      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis      
Nonrecurring Loans Reserves 4,800,000 $ 4,700,000  
Loans $ 16,900,000 $ 19,500,000  
Number of Loans measured | loan 14 11  
Mortgage servicing rights      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis      
Impairment on mortgage servicing rights $ 0 $ 13,000  
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration] Gain (Loss) on Sale of Mortgage Loans Gain (Loss) on Sale of Mortgage Loans  
SBA servicing asset      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis      
Impairment on mortgage servicing rights $ 41,000 $ 0  
Discount rate | Individually evaluated loans | Minimum      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis      
Measurement input (as a percent) 0.06    
Discount rate | Individually evaluated loans | Maximum      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis      
Measurement input (as a percent) 0.32    
Discount rate | Individually evaluated loans | Weighted average      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis      
Measurement input (as a percent) 0.099    
Discount rate | Mortgage servicing rights | Minimum      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis      
Servicing assets measurement input (as a percent) 0.095    
Discount rate | Mortgage servicing rights | Maximum      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis      
Servicing assets measurement input (as a percent) 0.10    
Discount rate | SBA servicing asset | Weighted average      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis      
Servicing assets measurement input (as a percent) 0.108    
Constant prepayment speed | Mortgage servicing rights | Minimum      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis      
Servicing assets measurement input (as a percent) 0.066    
Constant prepayment speed | Mortgage servicing rights | Maximum      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis      
Servicing assets measurement input (as a percent) 0.124    
Constant prepayment speed | Mortgage servicing rights | Weighted average      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis      
Servicing assets measurement input (as a percent) 0.069    
Constant prepayment speed | SBA servicing asset | Weighted average      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis      
Servicing assets measurement input (as a percent) 0.161