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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Income Taxes [Abstract] |  |
Effective income tax rate | 31.70% | 28.10%
Loss before income taxes | $ 6,910 | $ (15,210)
Income tax (expense) benefit | $ (2,188) | $ 4,268

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