Fair Value of Financial Instruments - Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
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	$ 3,597	$ 2,988
Level 3 [Member] \| Loan Servicing Rights [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis, Total	323
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	3,597	2,988
Fair Value on Nonrecurring Basis [Member] \| Loan Servicing Rights [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis, Total	323
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	3,597	2,988
Fair Value on Nonrecurring Basis [Member] \| Level 3 [Member] \| Loan Servicing Rights [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis, Total	$ 323
Liability measured at fair value on a nonrecurring basis, Total		$ (4)