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Stock Incentive Plans - Summary of Options Outstanding Vested and Expected to Vest (Detail)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2021
USD ($)
$ / shares
shares
Share-based Payment Arrangement [Abstract]  
Number of vested shares (in shares) | shares 1,045
Number of shares expected to vest (in shares) | shares 1,398
Number of shares total (in shares) | shares 2,443
Weighted-average exercise price vested (in dollars per share) | $ / shares $ 16.09
Weighted-average exercise price expected to vest (in dollars per share) | $ / shares $ 31.91
Weighted-average remaining contractual life vested (in years) 6 years 6 months 14 days
Weighted-average remaining contractual life expected to vest (in years) 8 years 8 months 4 days
Aggregate intrinsic value vested | $ $ 54,318
Aggregate intrinsic value expected to vest | $ 52,508
Aggregate intrinsic value total | $ $ 106,826