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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2024
Dec. 31, 2023
Jan. 01, 2023
Summary of Significant Accounting Policies      
Accrued interest receivable on available-for-sale debt securities $ 2,600 $ 2,700  
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Interest Receivable Interest Receivable  
Accrued interest receivable on loans receivable $ 1,400 $ 1,100  
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Interest Receivable Interest Receivable  
Amount of loans evaluated for determination of allowance for credit losses $ 100,000    
Retained earnings 44,771 $ 44,018  
Loans, net of allowance $ 480,525 $ 479,318  
Cumulative effect of adoption of ASU 2016-13 | ASU No. 2016-13      
Summary of Significant Accounting Policies      
Retained earnings     $ 2,088,000
Cumulative effect of adoption of ASU 2016-13 | ASU No. 2016-13 | Loans other than unfunded loan commitments      
Summary of Significant Accounting Policies      
Loans, net of allowance     1,911,000
Cumulative effect of adoption of ASU 2016-13 | ASU No. 2016-13 | Unfunded loan commitments      
Summary of Significant Accounting Policies      
Loans, net of allowance     $ 177,000