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Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($)
Sep. 30, 2024
Dec. 31, 2023
Loss Contingencies [Line Items]    
Notional Amount Of Performance Standby Letters Of Credit $ 1,900,000  
Notional Amount Of Commercial Letters Of Credit 0  
Notional Amount Of Financial Standby Letters Of Credit 1,200,000  
Financial instrument of credit risk 200,000 $ 100,000
Off-Balance-Sheet, Credit Loss, Liability 4,100,000 $ 7,300,000
Minimum [Member]    
Loss Contingencies [Line Items]    
Loss Contingency, Estimate of Possible Loss 0  
Maximum [Member]    
Loss Contingencies [Line Items]    
Loss Contingency, Estimate of Possible Loss $ 1,000,000