Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Schedule of Stock Option Activity (Details)

v3.20.2
Stockholders' Equity - Schedule of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Millions
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Shares    
Stock options outstanding at beginning of period 3,063,636  
Granted 6,164,100  
Exercised (17,187)  
Forfeited/Expired (53,684)  
Stock options outstanding at end of period 9,156,865  
Stock options exercisable at end of period 5,921,313  
Weighted Average Exercise Price    
Stock options outstanding at beginning of period $ 2.56  
Granted 1.22  
Exercised 0.53  
Forfeited/Expired 1.90  
Stock options outstanding at end of period 1.67  
Stock options exercisable at end of period $ 2.14  
Weighted Average Remaining Contractual Life    
Stock options outstanding at end of period 9 years 1 month 6 days  
Stock options exercisable at end of period 9 years 1 month 6 days  
Unrecognized stock-based compensation expense $ 2.0  
Unrecognized stock-based compensation expense, recognition period 1 year 7 months 6 days  
Weighted-average fair value of options $ 0.90 $ 0.91