Quarterly report pursuant to Section 13 or 15(d) 06-30-2019

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

v3.19.2
Fair Value Measurements - Schedule of Fair Value Measurement Hierarchy of Derivative Liability (Details) - Common Stock Warrants [Member] - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Beginning balance $ (1,566) $ (1,357)
Issuances of warrants classified as derivatives   (7,577)
Change in fair value 610 2,020
Exercise of warrants   565
Other, net   (212)
Ending balance $ (956) $ (6,561)