Annual report pursuant to Section 13 and 15(d)

Loss per Share - Additional Information (Details)

v3.20.4
Loss per Share - Additional Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Loss allocated to participating securities $ 0  
Stock Options [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Anti-dilutive common share equivalents excluded from computation of diluted net loss per share 142,171 125,579
Warrants [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Anti-dilutive common share equivalents excluded from computation of diluted net loss per share 2,345,033  
Restricted Stock Units (RSUs) [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Anti-dilutive common share equivalents excluded from computation of diluted net loss per share 33,548 10,864
Employee Stock Purchase Plan [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Anti-dilutive common share equivalents excluded from computation of diluted net loss per share 3,200 2,473
Restricted Stock Awards (RSAs) [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Anti-dilutive common share equivalents excluded from computation of diluted net loss per share 290,536