v3.26.1
Fair Value Measurements and Disclosures - Summary of Carrying Amounts and Estimated Fair Value of Financial Instruments (Detail) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Financial Assets: (Carrying Amount)    
Cash and cash equivalents $ 119,794 $ 135,686
Securities available-for-sale at fair value 164,557 182,569
Securities held-to-maturity 151 153
Loans receivable, net 1,799,100 1,796,091
Restricted investments in bank stock 2,366 2,366
Accrued interest receivable 7,323 7,797
Equity method investments 12,214 11,832
Mortgage servicing rights 587 622
Financial Liabilities (Carrying Amount)    
Deposits 1,942,659 1,976,193
Accrued interest payable 8,081 8,529
Financial Assets: (Fair Value)    
Securities available-for-sale at fair value 164,557 182,569
Securities held-to-maturity 152 154
Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member]    
Financial Assets: (Fair Value)    
Cash and cash equivalents 119,794 135,686
Securities available-for-sale at fair value 164,557 182,569
Securities held-to-maturity 152 154
Loans receivable, net 1,877,988 1,844,992
Restricted investments in bank stock 2,366 2,366
Accrued interest receivable 7,323 7,797
Equity method investments 12,214 11,832
Mortgage servicing rights 587 622
Financial Liabilities (Fair Value)    
Deposits 1,816,424 1,904,904
Accrued interest payable 8,081 8,529
Fair Value, Inputs, Level 1 [Member]    
Financial Assets: (Fair Value)    
Cash and cash equivalents 119,794 135,686
Securities available-for-sale at fair value 1,964 2,953
Fair Value, Inputs, Level 2 [Member]    
Financial Assets: (Fair Value)    
Securities available-for-sale at fair value 162,593 179,616
Securities held-to-maturity 152 154
Restricted investments in bank stock 2,366 2,366
Accrued interest receivable 7,323 7,797
Equity method investments 7,520 7,520
Mortgage servicing rights 587 622
Financial Liabilities (Fair Value)    
Deposits 1,816,424 1,904,904
Accrued interest payable 8,081 8,529
Fair Value, Inputs, Level 3 [Member]    
Financial Assets: (Fair Value)    
Loans receivable, net 1,877,988 1,844,992
Equity method investments $ 4,694 $ 4,312