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Securities - Available-for-sale Securities by Contractual Maturity (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
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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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