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Income Taxes Income Taxes (Details) - USD ($) $ in Thousands | 6 Months Ended |  |  |
--- | --- | --- | --- | ---
Jun. 30, 2018 | Jan. 01, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Unrecognized Tax Benefits | $ 0 |  |  |
Restricted Stock Expense, Tax Benefit | $ 100 |  |  |
Effect of ASU Adoption [Member] |  |  |  |
Cumulative effect of adoption of ASU 2018-02 |  |  | $ 0 | $ 0
Effect of ASU Adoption [Member] | Retained Earnings [Member] |  |  |  |
Cumulative effect of adoption of ASU 2018-02 |  | $ 1,344 | $ 1,344 |

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