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Investment Securities (Scheduled Maturities of Securities Available for Sale and Securities Held to Maturity) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
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Investments [Abstract] |  |
Debt securities available for sale, Due in one year or less, Amortized Cost | $ 16 |
Debt securities available for sale, Due from one to five years, Amortized Cost | 91,628 |
Debt securities available for sale, Due after five years through ten years, Amortized Cost | 87,217 |
Debt securities available for sale, Due after ten years, Amortized Cost | 832,988 |
Securities available for sale, Amortized Cost | 1,011,849 | $ 1,037,990
Debt securities available for sale, Due in one year or less, Fair Value | 16 |
Debt securities available for sale, Due from one to five years, Fair Value | 85,664 |
Debt securities available for sale, Due after five years through ten years, Fair Value | 80,109 |
Debt securities available for sale, Due after ten years, Fair Value | 721,027 |
Debt securities available for sale, Fair Value | 886,816 | 887,730
Debt securities held to maturity, Due in one year or less, Amortized Cost | 18,896 |
Debt securities held to maturity, Due from one to five years, Amortized Cost | 21,975 |
Debt securities held to maturity, Due after five years through ten years, Amortized Cost | 22,940 |
Debt securities held to maturity, Due after ten years, Amortized Cost | 57,471 |
Securities held to maturity, Amortized Cost | 121,282 | 148,160
Debt securities held to maturity, Due in one year or less, Fair Value | 18,771 |
Debt securities held to maturity, Due from one to five years, Fair Value | 21,257 |
Debt securities held to maturity, Due after five years through ten years, Fair Value | 21,487 |
Debt securities held to maturity, Due after ten years, Fair Value | 51,098 |
Securities held to maturity, Fair Value | $ 112,613 | $ 137,030

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