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Investments in Securities - Additional Information (Details) - USD ($)
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2024
Schedule Of Available For Sale Securities [Line Items]        
Accrued interest on held to maturity securities $ 296,000     $ 378,000
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Interest Receivable     Interest Receivable
Accrued interest on available for sale securities $ 49,000     $ 16,000
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Interest Receivable     Interest Receivable
Held-to-maturity securities, write-offs of accrued interest income $ 0 $ 0    
Held-to-maturity securities, delinquent amount 0     $ 0
Available-for-sale securities, write-offs of accrued interest income 0   $ 0  
Available-for-sale securities, nonaccrual status 0 0    
Held-to-maturity securities, provision for credit loss 0 0    
Held to maturity securities, nonaccrual status 0 0    
Sale of securities 0 $ 0    
FHLB | Loans Pledged        
Schedule Of Available For Sale Securities [Line Items]        
Pledged securities 55,500,000     55,500,000
FRB | Loans Pledged        
Schedule Of Available For Sale Securities [Line Items]        
Pledged securities $ 18,200,000     $ 16,000,000