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Loan Servicing Assets - Additional Information (Detail) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Finite Lived Intangible Assets [Line Items]    
Loan servicing assets $ 3,903 $ 4,287
Mortgage Servicing Assets [Member]    
Finite Lived Intangible Assets [Line Items]    
Unpaid principal balances of mortgage and other loans serviced for others 720,800 721,400
Loan servicing assets $ 7,300 $ 7,000