Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Schedule of Fair Value Measurement Hierarchy of Derivative Liability (Details)

v3.20.2
Fair Value Measurements - Schedule of Fair Value Measurement Hierarchy of Derivative Liability (Details) - Common Stock Warrants [Member] - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Beginning balance $ (220) $ (1,566)
Issuance of derivatives (6,328)  
Change in fair value 1,750 754
Exercise of warrants 3,197 44
Other, net 1 (1)
Ending balance $ (1,600) $ (769)