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Securities (Details 1) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
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Contractual Maturities Of Available For Sale Debt Securities [Line Items] |  |
Estimated Fair Value, Due in one year or less | $ 4,913 |
Estimated Fair Value, Due from one to five years | 7,233 |
Estimated Fair Value, Due from five to ten years | 16,593 |
Estimated Fair Value, Due over ten years | 79,986 |
Estimated Fair Value, Total | $ 251,331 | $ 241,768
Tax-Equivalent Yield, Due in one year or less | 6.30% |
Tax-Equivalent Yield, Due from one to five years | 3.21% |
Tax-Equivalent Yield, Due from five to ten years | 3.86% |
Tax-Equivalent Yield, Due over ten years | 4.10% |
Tax-Equivalent Yield, Total | 3.37% |
Collateralized Mortgage Backed Securities [Member] |  |
Contractual Maturities Of Available For Sale Debt Securities [Line Items] |  |
Estimated Fair Value, Total | $ 142,606 | $ 135,281
Tax-Equivalent Yield, Total | 2.80% |

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