Income Taxes - Additional Information (Detail) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
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| Income Tax Disclosure [Abstract] | ||||
| State income tax benefit | $ 0 | $ 0 | $ 0 | $ 0 |
| Federal income tax benefit | $ 0 | $ 0 | $ 0 | $ 0 |
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- Definition Amount of current and deferred federal income tax expense (benefit) attributable to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of state and local current and deferred income tax expense (benefit) attributable to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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