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Fair Value Disclosures (Additional) (Detail) - USD ($)
$ in Thousands
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Allowance for credit losses, post ASU 2019-04 $ 34,690 $ 34,203 $ 35,066 $ 32,747 $ 32,279 $ 23,334
Collateral Pledged [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Allowance for credit losses, post ASU 2019-04 $ 3,100   $ 3,500