v3.22.2.2
Stock-based Compensation - Summary of Restricted Stock Unit Activity (Detail) - RSUs
 9 Months Ended
Sep. 30, 2022
$ / shares
shares
Number of Units  
Unvested at beginning of period (in shares) | shares 3,577,000
Granted (in shares) | shares 6,982,000
Vested (in shares) | shares (1,010,000)
Cancelled/forfeited (in shares) | shares (900,000)
Unvested at ending of period (in shares) | shares 8,649,000
Weighted-
Average
Grant-
Date Fair
Value  
Unvested at beginning of period (in dollars per share) | $ / shares $ 21.52
Granted (in dollars per share) | $ / shares 13.39
Vested (in dollars per share) | $ / shares 21.05
Cancelled/forfeited (in dollars per share) | $ / shares 14.50
Unvested at ending of period (in dollars per share) | $ / shares $ 15.75