v3.26.1
Fair Value Measurements and Disclosures - Summary of Carrying Amounts and Estimated Fair Value of Financial Instruments (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Financial Assets: (Carrying Amount)    
Cash and cash equivalents $ 66,190 $ 135,686
Securities available-for-sale at fair value 261,491 182,569
Securities held-to-maturity 149 153
Loans receivable, net 1,751,537 1,796,091
Restricted investments in bank stock 2,345 2,366
Accrued interest receivable 7,530 7,797
Equity method investments 12,319 11,832
Mortgage servicing rights 537 622
Financial Liabilities (Carrying Amount)    
Deposits 1,935,692 1,976,193
Accrued interest payable 6,668 8,529
Financial Assets: (Fair Value)    
Securities available-for-sale at fair value 261,491 182,569
Securities held-to-maturity 150 154
Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member]    
Financial Assets: (Fair Value)    
Cash and cash equivalents 66,190 135,686
Securities available-for-sale at fair value 261,491 182,569
Securities held-to-maturity 150 154
Loans receivable, net 1,808,820 1,844,992
Restricted investments in bank stock 2,345 2,366
Accrued interest receivable 7,530 7,797
Equity method investments 12,319 11,832
Mortgage servicing rights 537 622
Financial Liabilities (Fair Value)    
Deposits 1,847,319 1,904,904
Accrued interest payable 6,668 8,529
Fair Value, Inputs, Level 1 [Member]    
Financial Assets: (Fair Value)    
Cash and cash equivalents 66,190 135,686
Securities available-for-sale at fair value 1,974 2,953
Fair Value, Inputs, Level 2 [Member]    
Financial Assets: (Fair Value)    
Securities available-for-sale at fair value 259,517 179,616
Securities held-to-maturity 150 154
Restricted investments in bank stock 2,345 2,366
Accrued interest receivable 7,530 7,797
Equity method investments 7,520 7,520
Mortgage servicing rights 537 622
Financial Liabilities (Fair Value)    
Deposits 1,847,319 1,904,904
Accrued interest payable 6,668 8,529
Fair Value, Inputs, Level 3 [Member]    
Financial Assets: (Fair Value)    
Loans receivable, net 1,808,820 1,844,992
Equity method investments $ 4,799 $ 4,312