Stockholders' Equity - Reconciliation of Warrant Liability Measured at Fair Value (Detail) - USD ($) $ in Thousands |
5 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Aug. 01, 2017 |
Dec. 31, 2017 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] | ||||
| Change in common stock warrant fair value | $ 128 | $ 3 | ||
| Basis of Fair Value Measurements, Level 3 | ||||
| Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] | ||||
| Beginning Balance | 49 | 34 | ||
| Fair value of common stock warrants | 1,120 | 18 | ||
| Change in common stock warrant fair value | $ 37 | $ (165) | (3) | |
| Ending Balance | $ 954 | 954 | $ 49 | |
| Conversion of 2014 warrants to common stock | $ (87) | |||
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- Definition Conversion of 2014 warrants to common stock. No definition available.
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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 Amount of issuances 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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- 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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- Definition Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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