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Debt (Detail) (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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| Debt [Line Items] | ||||
| Interest expense | $ 1,903 | $ 609 | $ 0 | $ 3,544 |
| Interest expenserelated parties | 0 | 55 | 74 | 503 |
| Amortization of embedded conversion feature | 0 | 0 | 0 | 831 |
| Change in fair value of common stock warrant liability | 0 | 0 | 0 | 234 |
| Amortization of deferred financing fees | 20 | 6 | 0 | 764 |
| Total interest expense | $ 1,923 | $ 670 | $ 74 | $ 5,876 |
| X | ||||||||||
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- Definition
It represents the amortization of embedded conversion feature. No definition available.
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| X | ||||||||||
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- Definition
Change in fair value of common stock warrant liability. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the cost of borrowed funds accounted for as interest expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of interest expense incurred on a debt or other obligation to related party. No definition available.
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