Investment Securities - Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Amortized Cost
Due in one year or less	$ 141
Due after one year through five years	5,900
Due after five years through ten years	43,269
Due after ten years	60,652
Total securities with contractual maturities	109,962
Amortized Cost	180,768	$ 149,265
Estimated Fair Value
Due in one year or less	141
Due after one year through five years	5,959
Due after five years through ten years	43,180
Due after ten years	59,508
Total securities with contractual maturities	108,788
Total available for sale securities	180,119
Amortized Cost
Due in one year or less	300
Total securities with contractual maturities	300
Mortgage backed securities	2,551
Total held to maturity securities	2,851
Estimated Fair Value
Due in one year or less	302
Total securities with contractual maturities	302
Mortgage backed securities	2,655
Total held to maturity securities	2,957	$ 4,872
Mortgage-backed securities
Amortized Cost
Securities without contractual maturities	70,806
Estimated Fair Value
Securities without contractual maturities	$ 71,331