Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Fair Value Hierarchies (Details)

v3.20.2
Fair Value Measurements - Fair Value Hierarchies (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Liabilities    
Warrant liabilities $ 4,560 $ 4,307
Recurring    
Liabilities    
Warrant liabilities 4,560 4,307
Contingent success fee liability   6
Level 1 | Recurring    
Liabilities    
Warrant liabilities 0 0
Contingent success fee liability   0
Level 2 | Recurring    
Liabilities    
Warrant liabilities 0 0
Contingent success fee liability   0
Level 3 | Recurring    
Liabilities    
Warrant liabilities $ 4,560 4,307
Contingent success fee liability   $ 6