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Allowance for Credit Losses - Additional Information (Detail) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Accounts Notes And Loans Receivable [Line Items]          
Provision for credit losses $ 1,800,000 $ 861,000 $ 3,842,000 $ 1,481,000  
Charge off in reserve for credit     500,000    
Increase in reserve for credit     $ 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: the loan is well-secured and none of the principal and interest has been past due for a minimum of 90 days or 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 $ 0 $ 0  
Individually evaluated loans     greater than $350    
Foreclosed assets 0   $ 0   $ 0
CECL Loans [Member]          
Accounts Notes And Loans Receivable [Line Items]          
Charge off in reserve for credit $ 500,000