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Net Loss Per Common Share - Warrants, Options and Purchase Rights Excluded from Computation of Diluted Net Loss Per Share (Detail)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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Warrants
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| Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] | ||||
| Shares issuable | 9,634 | 9,634 | ||
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Stock Options
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| Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] | ||||
| Shares issuable | 8,161 | 6,570 | 8,161 | 6,570 |
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Employee Stock Purchase Plan (ESPP)
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| Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] | ||||
| Shares issuable | 71 | 85 | 71 | 85 |