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Securities Available-for-Sale - Schedule of amortized cost and fair values of securities available-for-sale by contractual maturity (Detail) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Due after one year through five years, Amortized Cost | $ 2,234 |  |
Due after five years through ten years, Amortized Cost | 9,998 |  |
Due after ten years, Amortized Cost | 69,539 |  |
Total U.S. Government-sponsored enterprises obligations, municipal bonds, corporate debt and corporate subordinated debt, Amortized Cost | 81,771 |  |
Mortgage-backed securities, Amortized Cost | 123,474 |  | $ 120,401
Due after one year through five years, Fair Value | 2,211 |  |
Due after five years through ten years, Fair Value | 8,539 |  |
Due after ten years, Fair Value | 63,822 |  |
Total U.S. Government-sponsored enterprises obligations, municipal bonds, corporate debt and corporate subordinated debt, Fair Value | 74,572 |  |
Mortgage-backed securities, Fair Value | 109,896 |  | 106,100
U.S. Government agency small business administration pools guaranteed by SBA [Member] |  |  |
Mortgage-backed securities, Amortized Cost | 8,965 | [1] | 9,475
Mortgage-backed securities, Fair Value | 7,788 | [1] | 8,359
Collateralized mortgage obligations issued by the FHLMC, FNMA and GNMA [Member] |  |  |
Mortgage-backed securities, Amortized Cost | 6,594 | [1] | 6,922
Mortgage-backed securities, Fair Value | 5,864 | [1] | 6,222
Residential mortgage backed securities [Member] |  |  |
Mortgage-backed securities, Amortized Cost | 26,144 | [1] | 26,390
Mortgage-backed securities, Fair Value | $ 21,672 | [1] | $ 21,823
[1] | Actual maturities for these debt securities are dependent upon the interest rate environment and prepayments on the underlying loans.

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