Stock-based Compensation - Summary of Company's Restricted Stock Units and Unregistered Restricted Stock Awards Activity (Detail) shares in Thousands	9 Months Ended
	Sep. 30, 2022 $ / shares shares
RSUs outstanding
Number of Shares
Beginning balance (in shares) | shares	14,684
Granted (in shares) | shares	22,954
Released (in shares) | shares	(5,575)
Cancelled (in shares) | shares	(1,333)
Ending balance (in shares) | shares	30,731
Weighted- Average grant date fair value
Beginning balance (in dollars per share) | $ / shares	$ 68.03
Granted (in dollars per share) | $ / shares	41.83
Released (in dollars per share) | $ / shares	61.23
Cancelled (in dollars per share) | $ / shares	58.81
Ending balance (in dollars per share) | $ / shares	$ 50.09
Restricted Stock Awards
Number of Shares
Beginning balance (in shares) | shares	468
Granted (in shares) | shares	298
Released (in shares) | shares	(134)
Cancelled (in shares) | shares	0
Ending balance (in shares) | shares	632
Weighted- Average grant date fair value
Beginning balance (in dollars per share) | $ / shares	$ 57.37
Granted (in dollars per share) | $ / shares	45.99
Released (in dollars per share) | $ / shares	60.52
Cancelled (in dollars per share) | $ / shares	0
Ending balance (in dollars per share) | $ / shares	$ 51.33