Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.1
Stockholders' Equity - Schedule of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Shares    
Stock options outstanding at December 31, 2019 3,063,636  
Granted 2,567,000  
Forfeited/Expired (35,076)  
Stock options outstanding at March 31, 2020 5,595,560  
Stock options exercisable 2,198,387  
Weighted Average Exercise Price    
Stock options outstanding at December 31, 2019 $ 2.56  
Granted 0.58  
Forfeited/Expired 2.35  
Stock options outstanding at March 31, 2020 1.65  
Stock options exercisable at March 31, 2020 $ 2.95  
Weighted Average Remaining Contractual Life    
Stock options outstanding at March 31, 2020 9 years 1 month 6 days  
Stock options exercisable at March 31, 2020 8 years 4 months 24 days  
Unrecognized stock-based compensation expense $ 2.4  
Unrecognized stock-based compensation expense, recognition period 1 year 9 months 18 days  
Weighted-average fair value of options $ 0.42 $ 0.80