v3.25.4
Summary of Significant Accounting Policies - Additional Information (Details)
 12 Months Ended
Dec. 31, 2025
USD ($)
segment
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Schedule Of Summary Of Significant Accounting Policies [Line Items]      
Reserve requirements $ 0 $ 0  
Securities held for trading purposes 0 0  
Mortgage loans held for sale 1,558,000 832,000  
Loans classified as credit cards 2,710,881,000 $ 2,685,269,000  
Threshold for significant investments $ 500,000    
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Accrued interest receivable and other assets Accrued interest receivable and other assets  
Right-of-use asset $ 9,059,000 $ 10,280,000  
Operating Lease, Liability, Statement of Financial Position [Extensible List] Accrued interest payable and other liabilities Accrued interest payable and other liabilities  
Present value of net future minimum lease payments $ 9,582,000 $ 10,737,000  
Period for appraises of property (in months) 12 months 12 months  
Foreclosed assets and ORE $ 1,929,000 $ 2,010,000  
Other investments 12,242,000 23,171,000  
Income tax interest or penalties 0 0 $ 0
Accrued liability for interest or penalty payments 0 0 0
Tax effect for unrealized gains on investment securities $ 3,238,000 373,000 $ 2,105,000
Number of operating segments | segment 1    
Number of reportable segments | segment 1    
Minimum      
Schedule Of Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives of the individual assets (in years) 3 years    
Minimum | Core Deposits      
Schedule Of Summary Of Significant Accounting Policies [Line Items]      
Amortization of intangibles (in years) 9 years    
Maximum      
Schedule Of Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives of the individual assets (in years) 40 years    
Maximum | Core Deposits      
Schedule Of Summary Of Significant Accounting Policies [Line Items]      
Amortization of intangibles (in years) 15 years    
Credit card receivables      
Schedule Of Summary Of Significant Accounting Policies [Line Items]      
Mortgage loans held for sale $ 6,882,000 $ 5,907,000