Consolidated Financial Statements Details - Schedule of Other Income (Expense), Net (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
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| Other Income and Expenses [Abstract] | ||||
| Interest income (expense), net | $ 168 | $ (1,880) | $ 349 | $ (4,234) |
| Stock warrants issued | (5,790) | (5,790) | ||
| Write-off of deferred debt discounts and issuance costs | (10,132) | (10,132) | ||
| Gain on fair value change of warrant liability | 3,996 | 7,114 | ||
| Other | (35) | 60 | (33) | 82 |
| Other income (expense), net | $ 133 | $ (13,746) | $ 316 | $ (12,960) |
| X | ||||||||||
- Definition The net amount of operating interest income (expense). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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| X | ||||||||||
- Definition Amount of gain (loss) related to nonoperating activities, classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Gain loss on change of fair value of warrant liability. No definition available.
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- Definition Stock issued for cash and warrants. No definition available.
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- Definition Write off of debt discounts and issuance costs at initial public offering. No definition available.
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