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Investments Securities - Additional Information (Details) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2024 USD ($) security | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) investment
Investments, Debt and Equity Securities [Abstract] |  |  |
Available-for-sale securities, accrued interest |  |  | $ 718,000
Held-to-maturity securities, accrued interest | $ 224,000 |  | 234,000
Investments in debt securities with amortized cost pledged to secure public deposits | 20,400,000 |  | 21,800,000
Investment securities pledged to secure debt | $ 24,100,000 |  | $ 25,000,000.0
Number of securities matured | security | 2 |  |
AFS securities matured | $ 100,000,000 |  |
Number of securities purchased | security | 0 |  |
Sale of securities | $ 0 | $ 0 |
Number of securities in unrealized loss position | 7 |  | 9
Gross unrealized losses for investment securities | $ 136,000 |  | $ 823,000
Maturity of time horizon | 1 year |  |

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