Fair Value of Warrants - Summary of Derivative Warrant Activity (Details) $ in Thousands |
6 Months Ended |
---|---|
Jun. 30, 2019
USD ($)
| |
Class of Warrants Outstanding [Roll Forward] | |
Fair value of warrants outstanding as of December 31, 2018 | $ 248 |
Change in fair value of warrants | (199) |
Fair value of warrants outstanding as of June 30, 2019 | 49 |
2016 Offerings | |
Class of Warrants Outstanding [Roll Forward] | |
Fair value of warrants outstanding as of December 31, 2018 | 225 |
Change in fair value of warrants | (176) |
Fair value of warrants outstanding as of June 30, 2019 | 49 |
2017 Offering | |
Class of Warrants Outstanding [Roll Forward] | |
Fair value of warrants outstanding as of December 31, 2018 | 23 |
Change in fair value of warrants | (23) |
Fair value of warrants outstanding as of June 30, 2019 | $ 0 |
X | ||||||||||
- Definition Change In Fair Value Of Warrant Liability No definition available.
|
X | ||||||||||
- Definition Class of Warrants Outstanding [Roll Forward] No definition available.
|
X | ||||||||||
- 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://fasb.org/us-gaap/role/ref/legacyRef
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|