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Income Taxes - Additional Information (Detail) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014 | Jan. 30, 2015 | Mar. 19, 2012
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |
Net (loss) income | $ (73,483,000) | $ 17,322,000 | $ (67,982,000) | $ 13,942,000 | $ 3,070,000 |  |
Percentage of net operating loss carry forwards | 100.00% |  | 100.00% |  |  |  |
Valuation allowance recorded to be reduce to | 0.00% |  | 0.00% |  |  |  |
Income tax expense or benefit |  |  |  |  | 0 |  |
Income tax at the federal statutory rate of 35% |  |  | 35.00% |  |  |  |
Income tax paid |  |  | $ 0 |  | $ 0 |  |
Valuation allowance equal to net deferred federal income tax asset | 100.00% |  | 100.00% |  | 100.00% |  |
Abandoned stock |  |  |  |  |  |  | $ 8,370,000,000
Change in equity ownership | 50.00% |  | 50.00% |  |  | 42.50% | 50.00%
Available and utilizable NOL |  |  |  |  | $ 6,000,000,000 |  |
NOLs expiration date |  |  | 2031 |  |  |  |
Reserves for uncertain federal income tax positions | $ 0 |  | $ 0 |  |  |  |
Income tax interest income, expense or penalties |  |  | $ 0 |  | $ 0 |  |
Income tax examination, year under examination |  |  | 2011 |  |  |  |

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