Investment Securities - Contractual Maturities of Investment Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Available for Sale Amortized Cost
Due within one year	$ 2,382
Due over one to five years	617
Due over five to ten years	13,012
Due over ten years	53,194
Amortized Cost	69,205	$ 71,437
Available for Sale Fair Value
Due within one year	2,390
Due over one to five years	623
Due over five to ten years	13,107
Due over ten years	54,052
Fair Value	$ 70,172	$ 71,486
Available for Sale, Yield
Within one year	1.77%
Over one to five years	1.81%
Over five to ten years	1.76%
Over ten years	2.17%