Quarterly report pursuant to Section 13 or 15(d)

Net Income Loss Per Share - Effect of Anti-dilutive Securities (Detail)

v3.20.2
Net Income Loss Per Share - Effect of Anti-dilutive Securities (Detail) - shares
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Effect of Anti-dilutive Securities 11,615,666 11,376,252 11,476,624 11,135,119
Employee Stock Option and Restricted Stock Units [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Effect of Anti-dilutive Securities 10,022,826 10,079,101 9,954,904 9,837,968
Warrant [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Effect of Anti-dilutive Securities 1,592,840 1,297,151 1,521,720 1,297,151