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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income tax expense (benefit) | $ (61,673) | $ 583 | $ 99 | $ 53 | $ (131) | $ 44 | $ 63 | $ 44 | $ (60,938) | $ 20 | $ 296
Valuation allowance adjustments | (61,400) |  |  |  |  |  |  |  |  |  |
Net deferred tax assets | 61,396 |  |  |  | 0 |  |  |  | 61,396 | 0 |
Period increase (decrease) |  |  |  |  |  |  |  |  | (11,000) |  |
Allowances against the net deferred tax assets | $ 75,910 |  |  |  | $ 148,269 |  |  |  | 75,910 | $ 148,269 |
Unrecognized tax benefits that would impact effective tax rate |  |  |  |  |  |  |  |  | $ (72,400) |  |

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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319 + Details
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