Investment Securities (Amortized Cost and Estimated Fair Value by Maturity Date) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Investment Securities [Abstract]
Available for sale, Amortized Cost, Due in one year or less	$ 34
Available for sale, Amortized Cost, Due after one year through five years	2,254
Available for sale, Amortized Cost, Due after five years through ten years	51,738
Available for sale, Amortized Cost, Due after ten years	49,813
Available-for-sale securities, Amortized Cost	103,839	$ 116,906
Available for sale, Estimated Fair Value, Due in one year or less	33
Available for sale, Estimated Fair Value, Due after one year through five years	2,211
Available for sale, Estimated Fair Value, Due after five years through ten years	48,323
Available for sale, Estimated Fair Value, Due after ten years	44,122
Available-for-sale Securities, Debt Securities, Total	94,689	116,982
Held to maturity securities, Amortized Cost, Due in one year or less	4,415
Held to maturity securities, Amortized Cost, Due after one year through five years	50,829
Held to maturity securities, Amortized Cost, Due after five years through ten years	91,469
Held to maturity securities, Amortized Cost, Due after ten years	312,244
Held-to-maturity Securities, Amortized Cost	458,957	404,594
Held to maturity securities, Estimated Fair Value, Due in one year or less	4,396
Held to maturity securities, Estimated Fair Value, Due after one year through five years	48,325
Held to maturity securities, Estimated Fair Value, Due after five years through ten years	86,063
Held to maturity securities, Estimated Fair Value, Due after ten years	276,651
Held-to-maturity Securities, Fair Value, Total	$ 415,435	$ 401,524