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Securities - Amortized Cost and Fair Value of Available-for-Sale Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Amortized Cost |  |
Due in one year or less | $ 9,984 |
Due after one year through five years | 149,091 |
Due after five years through ten years | 49,085 |
Due after ten years | 11,523 |
Available-for-Sale Debt Securities With Fixed Maturities | 219,683 |
Total Debt Securities, Available-for-sale, Amortized Cost | 1,104,105 | $ 900,235
Fair Value |  |
Due in one year or less | 9,767 |
Due after one year through five years | 138,134 |
Due after five years through ten years | 44,838 |
Due after ten years | 11,238 |
Available-for-Sale Debt Securities With Fixed Maturities | 203,977 |
Total Available-for-Sale Debt Securities | 1,001,784 | 909,651
Collateralized mortgage obligations of U.S. government corporations and agencies |  |
Amortized Cost |  |
Available-for-Sale Debt Securities With Fixed Maturities | 482,039 |
Total Debt Securities, Available-for-sale, Amortized Cost | 482,039 | 270,696
Fair Value |  |
Available-for-Sale Debt Securities With Fixed Maturities | 428,407 |
Total Available-for-Sale Debt Securities | 428,407 | 270,294
Residential mortgage-backed securities of U.S. government corporations and agencies |  |
Amortized Cost |  |
Available-for-Sale Debt Securities With Fixed Maturities | 49,418 |
Total Debt Securities, Available-for-sale, Amortized Cost | 49,418 | 57,029
Fair Value |  |
Available-for-Sale Debt Securities With Fixed Maturities | 41,587 |
Total Available-for-Sale Debt Securities | 41,587 | 56,793
Commercial mortgage-backed securities of U.S. government corporations and agencies |  |
Amortized Cost |  |
Available-for-Sale Debt Securities With Fixed Maturities | 352,465 |
Total Debt Securities, Available-for-sale, Amortized Cost | 352,465 | 336,918
Fair Value |  |
Available-for-Sale Debt Securities With Fixed Maturities | 327,313 |
Total Available-for-Sale Debt Securities | 327,313 | 341,300
Corporate Obligations |  |
Amortized Cost |  |
Available-for-Sale Debt Securities With Fixed Maturities | 500 |
Total Debt Securities, Available-for-sale, Amortized Cost | 500 | 500
Fair Value |  |
Available-for-Sale Debt Securities With Fixed Maturities | 500 |
Total Available-for-Sale Debt Securities | $ 500 | $ 500

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