Annual report pursuant to Section 13 and 15(d)

Equity Incentive Plans and Stock Based Compensation - Summary of Stock Option Activity Under Equity Incentive Plan (Detail)

v3.22.1
Equity Incentive Plans and Stock Based Compensation - Summary of Stock Option Activity Under Equity Incentive Plan (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]      
Outstanding Options Number of Shares, Beginning Balance 6,697,927 4,763,062  
Number of Shares, Options granted 2,683,818 2,453,506  
Number of Shares, Options exercised (320,716) (261,260)  
Number of shares, Options cancelled (1,206,556) (257,381)  
Outstanding Options Number of Shares, Ending Balance 7,854,473 6,697,927 4,763,062
Outstanding Options Number of Shares, Vested and expected to vest, December 31, 2021 7,854,473    
Outstanding Options Number of Shares, Exercisable at December 31, 2021 4,289,745    
Weighted Average Exercise Price, Beginning Balance $ 9.13 $ 6.36  
Weighted Average Exercise Price, Options granted 12.84 14.06  
Weighted Average Exercise Price, Options exercised 5.05 3.99  
Weighted Average Exercise Price, Options cancelled 11.46 9.99  
Weighted Average Exercise Price, Ending Balance 10.21 $ 9.13 $ 6.36
Weighted Average Exercise Price, Vested and expected to vest, December 31, 2021 10.21    
Weighted Average Exercise Price, Exercisable at December 31, 2021 $ 8.75    
Weighted-Average Remaining Contractual Term, Outstanding 6 years 8 months 19 days 7 years 9 months 3 days 8 years 1 month 6 days
Weighted-Average Remaining Contractual Term, Vested and expected to vest, December 31, 2021 6 years 8 months 19 days    
Weighted-Average Remaining Contractual Term, Exercisable at December 31, 2021 5 years 9 months 21 days    
Aggregate Intrinsic Value, Outstanding $ 950 $ 13,790 $ 36,630
Aggregate Intrinsic Value, Vested and expected to vest, December 31, 2021 950    
Aggregate Intrinsic Value, Exercisable at December 31, 2021 $ 950