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Income Taxes - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Income Tax Disclosure [Abstract] |  |
Effective tax rate (as percent) | 3.30% | 18.20%
Pre-tax income (loss) | $ (111,681) | $ 4,540

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