Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Thousands |
9 Months Ended | |
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Sep. 30, 2016 |
Dec. 31, 2015 |
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| Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] | ||
| Warrant liability | $ 350 | $ 1,105 |
| Maximum maturity period of cash and cash equivalents | 90 days | |
| Maximum maturity period of short-term investments | 1 year | |
| Series A and Series B Warrants issued in July 2014 Financing [Member] | ||
| Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] | ||
| Warrants outstanding and exercisable | 0 | |
| Maximum [Member] | ||
| Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] | ||
| Maturity period of securities | 1 year |
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- Definition Maturity period of securities. No definition available.
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- Definition Maximum maturity period of cash and cash equivalents. No definition available.
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- Definition Maximum maturity period of short term investments. 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 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 Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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