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Stockholders' Equity - Reconciliation of Warrant Liability Measured at Fair Value (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2012
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| Equity [Abstract] | ||||
| Beginning Balance | $ 32,558 | |||
| Change in fair value of common stock warrants | (6,379) | (2,967) | 2,559 | 85,572 |
| Exercise of warrants | (11,327) | |||
| Ending Balance | $ 23,790 | $ 23,790 | ||
| X | ||||||||||
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- Definition
Exercise of warrants liability measured at fair value. No definition available.
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- Details
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- Definition
Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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