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Securities - Available-for-sale Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Securities Available for Sale, Due in one year or less, Amortized Cost	$ 294
Securities Available for Sale, Due from one year to five years, Amortized Cost	16,000
Securities Available for Sale, Due from five years to ten years, Amortized Cost	13,302
Securities Available for Sale, Due after ten years, Amortized Cost	51,665
Securities Available for Sale, Amortized Cost	81,261
Amortized Cost	173,979	$ 204,217
Securities Available for Sale, Due in one year or less, Fair Value	297
Securities Available for Sale, Due from one year to five years, Fair Value	15,935
Securities Available for Sale, Due from five years to ten years, Fair Value	13,283
Securities Available for Sale, Due after ten years, Fair Value	52,136
Securities Available for Sale, Fair Value	81,651
Securities available for sale	174,114	$ 201,688
Mortgage-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities, Amortized Cost	92,718
Mortgage-backed securities, Fair Value	$ 92,463

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