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Income Taxes (Details Textual) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Income Tax Disclosure [Line Items] |  |
Income Tax Expense (Benefit) | $ (651) | $ 1,219
Latest Tax Year [Member] | Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |
Income Tax Disclosure [Line Items] |  |
Effective Tax Rate, Percent | 7.90% | 23.70%
Income Tax Expense (Benefit) |  | $ 1,200
Latest Tax Year [Member] | Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Change in Valuation Allowance on Deferred Tax Assets [Member] |  |
Income Tax Disclosure [Line Items] |  |
Income Tax Expense (Benefit) | $ (700) |

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