Investment Securities Debt Securities by Contactual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Available-for-sale Securities
Due in one year or less, Amortized Cost	$ 90
Due from one to five years, Amortized Cost	3,998
Due from five to ten years, Amortized Cost	17,193
Due after ten years, Amortized Cost	16,117
Debt securities with single maturity date, Amortized Cost	37,398
Agency mortgage-backed, Amortized Cost	46,403
Total debt securities available-for-sale, Amortized Cost	83,801	$ 74,698
Due in one year or less, Fair Value	90
Due from one to five years, Fair Value	4,126
Due from five to ten years, Fair Value	17,608
Due after ten years, Fair Value	16,416
Debt securities with single maturity date, Fair Value	38,240
Agency mortgage-backed, Fair Value	47,034
Total debt securities available-for-sale, Fair Value	$ 85,274	$ 73,405