Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Deficit) - Warrant activity (Details)

v3.20.1
Stockholders' Equity (Deficit) - Warrant activity (Details) - Warrant [Member] - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Number of Units and Awards, Unvested Beginning Balance 102,597  
Warrants, Exercise (86,143)  
Number of Units and Awards, Unvested Ending Balance 16,454  
Weighted Average Exercise Price, Outstanding $ 0.0976  
Weighted Average Exercise Price, Exercised 0.0001  
Weighted Average Exercise Price, Outstanding $ 0.6079  
Aggregate Intrinsic Value $ 148 $ 544