Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions |
3 Months Ended | 6 Months Ended | ||
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Mar. 16, 2016 |
Jun. 30, 2016 |
Jun. 30, 2016 |
Dec. 31, 2015 |
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February 2015 Warrants | ||||
Class Of Warrant Or Right [Line Items] | ||||
Warrants to purchase shares of common stock | 8.3 | 8.3 | 8.3 | |
Warrant exercise price | $ 3.62 | $ 3.62 | $ 10.86 | |
February 2015 Warrants | Warrants | ||||
Class Of Warrant Or Right [Line Items] | ||||
Change in fair value of common stock warrants | $ 1,000,000 | $ 700,000 | ||
March 2011 Warrants | ||||
Class Of Warrant Or Right [Line Items] | ||||
Warrants to purchase shares of common stock | 3.8 | |||
Warrant exercise price | $ 2.46 | |||
Number of outstanding warrants that expired | 3.8 | |||
March 2011 Warrants | Warrants | ||||
Class Of Warrant Or Right [Line Items] | ||||
Change in fair value of common stock warrants | $ 38,000 |
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- Definition Number of outstanding warrants that expired. No definition available.
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- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Number of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of expense (income) related to adjustment to fair value of warrant liability. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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