Stock-Based Compensation - Schedule of Additional Information on Unvested Options (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average remaining contractual term (in years)	4 years 3 months 21 days	4 years 6 months 25 days
Aggregate intrinsic value	$ 77,329	$ 126,467
Unvested Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares outstanding (in shares)	3,537,907	3,721,832
Weighted-average exercise price (in dollars per share)	$ 94.99	$ 88.37
Weighted-average remaining contractual term (in years)	5 years 4 months 13 days	5 years 7 months 13 days
Aggregate intrinsic value	$ 10,352	$ 31,941