Securities - Available-for-sale Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Securities Available for Sale, Due in one year or less, Amortized Cost	$ 3,293
Securities Available for Sale, Due from one year to five years, Amortized Cost	10,850
Securities Available for Sale, Due from five years to ten years, Amortized Cost	12,691
Securities Available for Sale, Due after ten years, Amortized Cost	54,941
Securities Available for Sale, Amortized Cost	81,775
Amortized Cost	170,773	$ 204,217
Securities Available for Sale, Due in one year or less, Fair Value	3,283
Securities Available for Sale, Due from one year to five years, Fair Value	10,816
Securities Available for Sale, Due from five years to ten years, Fair Value	12,726
Securities Available for Sale, Due after ten years, Fair Value	55,719
Securities Available for Sale, Fair Value	82,544
Securities available for sale	171,507	$ 201,688
Mortgage-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities, Amortized Cost	88,998
Mortgage-backed securities, Fair Value	$ 88,963