Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Summary of Restricted Stock Units Activity (Detail)

v3.22.2.2
Stock-Based Compensation - Summary of Restricted Stock Units Activity (Detail) - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Share-Based Payment Arrangement [Abstract]    
Number of Stock Options outstanding, beginning balance [1] 19,444,178  
Number of Stock Options Granted [1] 4,909,367  
Number of Stock Options Exercised [1] 923,200  
Number of Stock Options Forfeited, canceled, or expired [1] 2,166,498  
Number of Stock Options outstanding, ending balance [1] 21,263,847 19,444,178
Number of Stock Options Vested and expected to vest [1] 21,263,847  
Number of Stock Options Exercisable [1] 12,651,086  
Weighted- Average Exercise Price beginning balance $ 1.78  
Weighted- Average Exercise Price, Granted 4.88  
Weighted- Average Exercise Price, Exercised 1.40  
Weighted- Average Exercise Price, Forfeited, canceled, or expired 2.96  
Weighted- Average Exercise Price, ending balance 2.40 $ 1.78
Weighted- Average Exercise Price, Vested and expected to vest 2.40  
Weighted- Average Exercise Price, Exercisable $ 1.91  
Weighted- Average Remaining Contractual Term (in years) 7 years 2 months 12 days 7 years 10 months 24 days
Vested and expected to vest weighted- average remaining contractual term (in years) 7 years 2 months 12 days  
Exercisable weighted- average remaining contractual term (in years) 6 years 3 months 18 days  
[1]

(1) These amounts have been adjusted to correctly present the prior period activity and options outstanding at December 31, 2020.