Investment Securities - Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Amortized Cost
Due in one year or less	$ 2,252	$ 5,175
Due after one year through five years	4,030	4,727
Due after five years through ten years	20,129	10,566
Due after ten years or more	22,583	11,884
Mortgage-backed, due in monthly installments	56,275	19,942
Amortized Cost	105,269	52,294
Fair Value
Due in one year or less	2,250	5,166
Due after one year through five years	4,026	4,649
Due after five years through ten years	20,621	10,521
Due after ten years or more	22,938	11,560
Mortgage-backed, due in monthly installments	56,421	19,404
Fair Value	$ 106,256	$ 51,300