Fair Value of Warrants - Summary of Derivative Warrant Activity (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended |
|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2016 |
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| Class of Warrants Outstanding [Roll Forward] | ||
| Fair value of warrants outstanding as of December 31, 2015 | $ 17 | |
| Fair value of warrants issued | 3,526 | |
| Change in fair value of warrants | $ (729) | |
| Fair value of warrants outstanding as of September 30, 2016 | 2,814 | 17 |
| Financial | ||
| Class of Warrants Outstanding [Roll Forward] | ||
| Fair value of warrants outstanding as of December 31, 2015 | 17 | |
| Fair value of warrants issued | 0 | |
| Change in fair value of warrants | (17) | |
| Fair value of warrants outstanding as of September 30, 2016 | 0 | 17 |
| 2016 Offering | ||
| Class of Warrants Outstanding [Roll Forward] | ||
| Fair value of warrants outstanding as of December 31, 2015 | 0 | |
| Fair value of warrants issued | 3,526 | |
| Change in fair value of warrants | (712) | |
| Fair value of warrants outstanding as of September 30, 2016 | $ 2,814 | $ 0 |
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- Definition Change In Fair Value Of Warrant Liability No definition available.
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- Definition Class of Warrants Outstanding [Roll Forward] No definition available.
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- Definition Fair Value Of Warrant Issued No definition available.
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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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