v3.26.1
Allowance for Credit Losses - Additional Information (Detail)
3 Months Ended
Mar. 31, 2026
USD ($)
Loan
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Accounts Notes And Loans Receivable [Line Items]      
Allowance for credit losses $ (768,000) $ 1,248,000  
Increase (decrease) in net loan $ 40,400,000 22,800,000  
Number of days reaching where loans are considered for nonaccrual status 90 days    
Conditions where loans are considered for nonaccrual status A loan may be returned to accruing status only if one of two conditions are met: (1) the loan is well-secured and none of the principal and interest has been past due for a minimum of 90 days or (2) the principal and interest payments are reasonably assured and a sustained period of performance has occurred, generally six months.    
Loans modified as troubled debt restructuring $ 0 $ 0  
Individually evaluated loans greater than $350    
Foreclosed assets $ 0   $ 0
Residential mortgages in process of foreclosure $ 1,028,000   $ 1,228,000
Number of loan modified | Loan 2