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Income Taxes (Details) - USD ($) | 3 Months Ended | 6 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Mar. 31, 2016 | Sep. 30, 2016 | Sep. 30, 2017
Income Tax Disclosure [Line Items] |  |  |  |  |
Tax expense (benefit) adjustment | $ (37,600,000) |  |  |  |
Income tax receivable | 17,000,000 |  |  |  | $ 17,000,000
Refundable alternative minimum tax credits | (9,700,000) |  |  |  | (9,700,000)
Successor |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Income tax (benefit) expense | $ (37,587,000) | $ 0 |  | $ 0 | (2,881,000)
Tax expense (benefit) adjustment (in dollars per share) | $ 0.71 |  |  |  |
Predecessor |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Income tax (benefit) expense |  |  | $ 18,000 |  |
Minimum |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Federal NOLs | $ 1,800,000,000 |  |  |  | 1,800,000,000
Maximum |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Federal NOLs | $ 2,000,000,000 |  |  |  | $ 2,000,000,000

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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