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Securities - Additional Information (Detail) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2024 USD ($) Security | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($)
Investments, Debt and Equity Securities [Abstract] |  |  |
Proceeds from sale of securities available-for-sale | $ 0 | $ 0 |
Gross realized gains | 0 | 0 |
Gross realized losses | 0 | $ 0 |
Carrying value of pledged securities | $ 210,834,000 |  | $ 211,616,000
Number of securities in portfolio with unrealized losses | Security | 508 |  |

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