Investment Securities (Amortized Cost and Estimated Fair Values of Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost, Total	$ 95,999	$ 116,906
Available-for-sale, Pledged available-for-sale securities, Estimated Fair Value	11,169	4,159
Held-to-Maturity, Amortized cost	559,455	404,594
Held-to-maturity securities, Estimated Fair Value, Total	494,627	401,524
Collateral Pledged [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost, Total	83,288	78,522
Available-for-sale, Pledged available-for-sale securities, Estimated Fair Value	72,108	78,352
Held-to-Maturity, Amortized cost	19,158	913
Held-to-maturity securities, Estimated Fair Value, Total	$ 16,305	$ 915