Annual report pursuant to Section 13 and 15(d)

Net Loss Per Share - Schedule of Antidilutive Shares Excluded from Calculation of Diluted Net Loss Per Share (Details)

v3.20.1
Net Loss Per Share - Schedule of Antidilutive Shares Excluded from Calculation of Diluted Net Loss Per Share (Details) - shares
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive shares have been excluded from calculation of diluted net loss per share 3,518,609 15,749,154
Convertible Preferred Stock    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive shares have been excluded from calculation of diluted net loss per share   12,393,047
Stock Options to Purchase Common Stock    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive shares have been excluded from calculation of diluted net loss per share 2,129,632 971,353
Non-vested Common Stock    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive shares have been excluded from calculation of diluted net loss per share 1,388,977 2,384,754