Post-effective amendment to a registration statement that is not immediately effective upon filing

Share-Based Compensation - Summary of Share-Based Compensation Arrangements by Share-based Payment Award (Detail)

v3.21.2
Share-Based Compensation - Summary of Share-Based Compensation Arrangements by Share-based Payment Award (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]    
Number of options Outstanding 7,834,282  
Number of options Granted 2,581,589  
Number of options Exercised (1,092,938)  
Number of options Forfeited (833,425)  
Number of options Expired (18,750)  
Number of options Outstanding at End 8,470,758 7,834,282
Number of options Exercisable 4,161,444  
Weighted- average exercise price,Outstanding $ 0.48  
Weighted- average exercise price Granted 1.14  
Weighted- average exercise price Exercised 0.26  
Weighted- average exercise price Forfeited 0.68  
Weighted- average exercise price Expired 0.79  
Weighted- average exercise price Outstanding at End 0.68 $ 0.48
Weighted- average exercise price Exercisable $ 0.44  
Weighted- average remaining contractual term Outstanding 7 years 11 months 1 day 8 years 3 months 3 days
Weighted- average remaining contractual term Outstanding at End 7 years 11 months 1 day 8 years 3 months 3 days
Weighted- average remaining contractual term Exercisable 7 years 25 days  
Aggregate intrinsic value, Outstanding $ 18,153  
Aggregate intrinsic value, Exercised 6,734  
Aggregate intrinsic value, Outstanding at End 48,594 $ 18,153
Aggregate intrinsic value Exercisable $ 24,873