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Common Stock - Additional Information (Detail) (Hercules Note [Member], USD $)
In Thousands, unless otherwise specified |
12 Months Ended | 90 Months Ended | ||
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2013
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Hercules Note [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Issuance of Warrant related to Hercules Note | $ 0 | $ 323 | $ 0 | $ 323 |
| X | ||||||||||
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- Definition
The cash inflow associated with the amount received from holders exercising their stock warrants. No definition available.
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| X | ||||||||||
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- Details
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