Quarterly report [Sections 13 or 15(d)]

Off-Balance Sheet Commitments - Distribution of Total Loan Commitments (Detail)

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Off-Balance Sheet Commitments - Distribution of Total Loan Commitments (Detail) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Loss Contingencies [Line Items]    
Total commitments $ 1,019,047 $ 898,078
Unused Commitments to Extend Credit    
Loss Contingencies [Line Items]    
Total commitments 896,282 782,291
Standby letters of credit    
Loss Contingencies [Line Items]    
Total commitments 99,278 97,463
Commercial letters of credit    
Loss Contingencies [Line Items]    
Total commitments $ 23,487 $ 18,324