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Securities - Additional Information (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 USD ($) segment | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) segment | Sep. 30, 2022 USD ($) | Dec. 31, 2022 USD ($)
Securities |  |  |  |  |
Gain on sale of investments | $ 0 | $ 0 | $ 0 | $ 5 |
Loss on sale of investments | $ 0 | $ 0 | $ 0 | 0 |
Number of investment securities segregation for impairment evaluation | segment | 2 |  | 2 |  |
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale |  |  | $ 83,640 | $ 141,274 |
Unrealized Losses | $ 218,672 |  | $ 218,672 |  | $ 172,134

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