Income Taxes - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands  | 
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015  | 
Dec. 31, 2014  | 
Dec. 31, 2013  | 
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| Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] | |||
| Current | $ 288 | $ 301 | $ (2,146) | 
| Deferred | (203,272) | (4,760) | 30,920 | 
| Income tax expense (benefit) | $ (202,984) | $ (4,459) | $ 28,774 | 
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- References No definition available. 
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- Definition Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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