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Investments in Securities - Held to maturity securities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Held To Maturity Securities |  |
Amortized cost | $ 202,377 | $ 0
Fair Value Adjustment | 118 |
Amortized Carrying Value | 202,495 | $ 0
Gross Unrealized Losses | 24,730 |
Fair Value | 177,765 |
Agency mortgage-backed securities |  |
Held To Maturity Securities |  |
Amortized cost | 73,891 |
Fair Value Adjustment | 3,015 |
Amortized Carrying Value | 76,906 |
Gross Unrealized Losses | 9,820 |
Fair Value | 67,086 |
Agency collateralized mortgage obligations |  |
Held To Maturity Securities |  |
Amortized cost | 122,247 |
Fair Value Adjustment | (2,885) |
Amortized Carrying Value | 119,362 |
Gross Unrealized Losses | 14,129 |
Fair Value | 105,233 |
States and political subdivisions securities |  |
Held To Maturity Securities |  |
Amortized cost | 6,239 |
Fair Value Adjustment | (12) |
Amortized Carrying Value | 6,227 |
Gross Unrealized Losses | 781 |
Fair Value | $ 5,446 |

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