Investment Securities (Amortized Cost and Estimated Fair Values of Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Pledged available-for-sale securities
Amortized Cost	$ 120,832	$ 95,999
Restricted securities	17,900	11,169
Pledged held-to-maturity securities
Amortized Cost	513,282	559,455
Estimated Fair Value	457,830	494,627
Total
Pledged available-for-sale securities
Amortized Cost	62,290	83,288
Restricted securities	54,489	72,108
Pledged held-to-maturity securities
Amortized Cost	185,876	19,158
Estimated Fair Value	$ 167,649	$ 16,305

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Amortized cost excluding accrued interest, before allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of restricted investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount excluding accrued interest, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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