Fair Value Measurements - Summary of Fair Value of Notes Payable (Details) - Fair value measurements, recurring - Significant Unobservable Inputs (Level 3) $ in Thousands |
6 Months Ended |
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Jun. 30, 2019
USD ($)
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| Note payable | VenturEast | |
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | |
| Fair value at December 31, 2018 | $ 20 |
| Change in fair value | (7) |
| Fair value at June 30, 2019 | 13 |
| Warrant liability | |
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | |
| Fair value at December 31, 2018 | 248 |
| Change in fair value | (199) |
| Fair value at June 30, 2019 | 49 |
| Other derivatives | |
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | |
| Fair value at December 31, 2018 | 86 |
| Change in fair value | (86) |
| Fair value at June 30, 2019 | $ 0 |
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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