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Income Taxes (Tables) | 6 Months Ended
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Jun. 30, 2017
Income Tax Disclosure [Abstract] |
Schedule of Income Tax Expense and Effective Tax Rates | For the three and six months ended June 30, 2017 and 2016, the Company's income tax expense and effective tax rates based on forecasted pretax income were:
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
(in thousands, except for rate) |  | 2017 |  | 2016 |  | 2017 |  | 2016
Income tax expense |  | $ | 3,642 |  |  | $ | 99 |  |  | $ | 9,028 |  |  | $ | 152 |
Effective tax rate |  | 36 | % |  | 1 | % |  | 37 | % |  | 1 | %

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