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Fair Value of Assets and Liabilities (Additional) (Detail) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Allowance for credit losses $ 37,423 $ 35,066
Collateral Pledged [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Allowance for credit losses $ 3,900 $ 3,500