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Income Taxes - Additional Information (Detail) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Mar. 19, 2012
Income Tax Disclosure [Abstract] |  |  |  |
Net (loss) income | $ 201,700,000 | $ (61,833,000) | $ 3,070,000 |
Income tax expense or benefit | $ 0 | $ 0 | $ 0 |
Income tax at the federal statutory rate of 35% | 35.00% | 35.00% | 35.00% |
Income tax paid | $ 0 | $ 0 | $ 0 |
Valuation allowance equal to net deferred federal income tax asset | 100.00% | 100.00% | 100.00% |
Abandoned stock |  |  |  | $ 8,370,000,000
Available and utilizable NOL | $ 6,000,000,000 |  |  |
NOLs expiration date | 2031 |  |  |
Reserves for uncertain federal income tax positions | $ 0 |  |  |
Income tax interest income, expense or penalties | $ 0 | $ 0 | $ 0 |
Income tax examination, year under examination | 2011 |  |  |

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