Investment Securities (Amortized Cost and Estimated Fair Value by Maturity Date) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Investment Securities [Abstract]
Available for sale, Amortized Cost, Due in one year or less	$ 9,003
Available for sale, Amortized Cost, Due after one year through five years	2,185
Available for sale, Amortized Cost, Due after five years through ten years	49,727
Available for sale, Amortized Cost, Due after ten years	41,447
Available-for-sale securities, Amortized Cost	102,362	$ 122,492
Available for sale, Estimated Fair Value, Due in one year or less	9,036
Available for sale, Estimated Fair Value, Due after one year through five years	2,217
Available for sale, Estimated Fair Value, Due after five years through ten years	50,899
Available for sale, Estimated Fair Value, Due after ten years	42,223
Available-for-sale Securities, Debt Securities, Total	104,375	122,791
Held to maturity securities, Amortized Cost, Due after one year through five years	400
Held to maturity securities, Amortized Cost, Due after five years through ten years	7,000
Held to maturity securities, Amortized Cost, Due after ten years	1,287
Held-to-maturity Securities, Amortized Cost	8,687	8,786
Held to maturity securities, Estimated Fair Value, Due after one year through five years	401
Held to maturity securities, Estimated Fair Value, Due after five years through ten years	6,987
Held to maturity securities, Estimated Fair Value, Due after ten years	1,330
Held-to-maturity Securities, Fair Value, Total	$ 8,718	$ 8,654