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Fair Value of Financial Instruments - Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Level 3 [Member] | Collateral Dependent Loans [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, Total $ 2,988 $ 22,676
Level 3 [Member] | Loan Servicing Right [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, Total   58
Liability measured at fair value on a nonrecurring basis, Total (4)  
Fair Value on Nonrecurring Basis [Member] | Collateral Dependent Loans [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, Total 2,988 22,676
Fair Value on Nonrecurring Basis [Member] | Loan Servicing Right [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, Total   58
Liability measured at fair value on a nonrecurring basis, Total (4)  
Fair Value on Nonrecurring Basis [Member] | Level 3 [Member] | Collateral Dependent Loans [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, Total 2,988 22,676
Fair Value on Nonrecurring Basis [Member] | Level 3 [Member] | Loan Servicing Right [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, Total   $ 58
Liability measured at fair value on a nonrecurring basis, Total $ (4)