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 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Effect of Anti-dilutive Securities 10,468,676 11,846,124 10,690,131 11,462,541
Employee Stock Option and Restricted Stock Units [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Effect of Anti-dilutive Securities 9,948,564 10,171,737 10,110,820 9,976,772
Warrant [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Effect of Anti-dilutive Securities 520,112 1,674,387 579,311 1,485,769