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Investment Securities (Amortized Cost and Estimated Fair Value by Maturity Date) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Investment Securities [Abstract] |  |
Available for sale, Amortized Cost, Due in one year or less | $ 75 |
Available for sale, Amortized Cost, Due after one year through five years | 6,658 |
Available for sale, Amortized Cost, Due after five years through ten years | 42,689 |
Available for sale, Amortized Cost, Due after ten years | 46,577 |
Available-for-sale securities, Amortized Cost | 95,999 | $ 116,906
Available for sale, Estimated Fair Value, Due in one year or less | 74 |
Available for sale, Estimated Fair Value, Due after one year through five years | 6,351 |
Available for sale, Estimated Fair Value, Due after five years through ten years | 37,856 |
Available for sale, Estimated Fair Value, Due after ten years | 39,306 |
Available-for-sale Securities, Debt Securities, Total | 83,587 | 116,982
Held to maturity securities, Amortized Cost, Due in one year or less | 2,117 |
Held to maturity securities, Amortized Cost, Due after one year through five years | 108,632 |
Held to maturity securities, Amortized Cost, Due after five years through ten years | 73,054 |
Held to maturity securities, Amortized Cost, Due after ten years | 375,652 |
Held-to-maturity Securities, Amortized Cost | 559,455 | 404,594
Held to maturity securities, Estimated Fair Value, Due in one year or less | 2,076 |
Held to maturity securities, Estimated Fair Value, Due after one year through five years | 101,165 |
Held to maturity securities, Estimated Fair Value, Due after five years through ten years | 66,502 |
Held to maturity securities, Estimated Fair Value, Due after ten years | 324,884 |
Held-to-maturity Securities, Fair Value, Total | $ 494,627 | $ 401,524

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