Investment Securities Debt Securities by Contactual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Available-for-sale Securities
Due in one year or less, Amortized Cost	$ 940
Due from one to five years, Amortized Cost	3,679
Due from five to ten years, Amortized Cost	14,136
Due after ten years, Amortized Cost	21,870
Debt securities with single maturity date, Amortized Cost	40,625
Agency mortgage-backed, Amortized Cost	46,212
Total debt securities available-for-sale, Amortized Cost	86,837	$ 86,145
Due in one year or less, Fair Value	947
Due from one to five years, Fair Value	3,784
Due from five to ten years, Fair Value	14,406
Due after ten years, Fair Value	22,231
Debt securities with single maturity date, Fair Value	41,368
Agency mortgage-backed, Fair Value	48,079
Total debt securities available-for-sale, Fair Value	$ 89,447	$ 87,393