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Income Taxes - Summary of Income Tax Benefit (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Current |  |  |
Federal | $ (9,920) | $ 983 | $ 44,887
State | (1,848) | (1,397) | (4,387)
Total | (11,768) | (414) | 40,500
Deferred |  |  |
Federal | (218,357) | (72,869) | (32,375)
State | (12,350) | (99) | (80,192)
Total | (230,707) | (72,968) | (112,567)
Income tax (benefit) expense | $ (242,475) | $ (73,382) | $ (72,067)

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