Annual report pursuant to Section 13 and 15(d)

Net Loss Per Share - Anti-dilutive Securities (Details)

v3.20.4
Net Loss Per Share - Anti-dilutive Securities (Details) - shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Stock options    
Anti-dilutive securities    
Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding (in shares) 9,830,674 4,480,606
Warrants on common stock    
Anti-dilutive securities    
Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding (in shares) 4,002,380 4,024,708
Restricted Stock Units    
Anti-dilutive securities    
Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding (in shares) 155,833 267,500
Underwriters' unit purchase option    
Anti-dilutive securities    
Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding (in shares) 0 40,000