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Securities Available-for-Sale - Schedule of amortized cost and fair value of securities available-for-sale (Detail) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Amortized Cost | $ 149,415 |  | $ 129,814
Gross Unrealized Gains | 1,901 |  | 679
Gross Unrealized Losses | (8,796) |  | (10,276)
Fair Value | 142,520 |  | 120,217
U.S. Government-sponsored enterprises obligations [Member] |  |  |
Amortized Cost | 1,622 |  | 1,642
Gross Unrealized Losses | (174) |  | (255)
Fair Value | 1,448 |  | 1,387
U.S. Government agency small business administration pools guaranteed by SBA [Member] |  |  |
Amortized Cost | 11,981 | [1] | 14,011
Gross Unrealized Gains | 6 |  | 16
Gross Unrealized Losses | (765) |  | (902)
Fair Value | 11,222 | [1] | 13,125
Collateralized mortgage obligations issued by the FHLMC, FNMA and GNMA [Member] |  |  |
Amortized Cost | 34,584 | [1] | 19,924
Gross Unrealized Gains | 798 |  | 34
Gross Unrealized Losses | (431) |  | (596)
Fair Value | 34,951 | [1] | 19,362
Residential mortgage-backed securities [Member] |  |  |
Amortized Cost | 60,299 | [1] | 52,452
Gross Unrealized Gains | 917 |  | 392
Gross Unrealized Losses | (3,231) |  | (4,382)
Fair Value | 57,985 | [1] | 48,462
Municipal bonds [Member] |  |  |
Amortized Cost | 32,655 |  | 32,960
Gross Unrealized Gains | 28 |  | 74
Gross Unrealized Losses | (3,829) |  | (3,502)
Fair Value | 28,854 |  | 29,532
Corporate debt [Member] |  |  |
Amortized Cost | 500 |  | 500
Gross Unrealized Losses | (12) |  | (16)
Fair Value | 488 |  | 484
Corporate subordinated debt [Member] |  |  |
Amortized Cost | 7,774 |  | 8,325
Gross Unrealized Gains | 152 |  | 163
Gross Unrealized Losses | (354) |  | (623)
Fair Value | $ 7,572 |  | $ 7,865
[1] | Actual maturities for these debt securities are dependent upon the interest rate environment and prepayments on the underlying loans.

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