Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.2
Net Income Loss Per Share - Effect of Anti-dilutive Securities (Detail) - shares
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Total 10,053,533 11,615,666 10,477,358 11,476,624
Employee Stock Option and Restricted Stock Units [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Total 9,533,421 10,022,826 9,917,997 9,954,904
Warrant [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Total 520,112 1,592,840 559,361 1,521,720