Stock-based Compensation Expense - Schedule of Company's Restricted Stock Units and Unregistered Restricted Stock Awards Activity (Detail) shares in Thousands	6 Months Ended
	Jun. 30, 2023 $ / shares shares
RSUs outstanding
Number of Shares
Beginning balance (in shares) | shares	30,322
Granted (in shares) | shares	13,364
Vested and released (in shares) | shares	(6,417)
Cancelled (in shares) | shares	(1,224)
Ending balance (in shares) | shares	36,045
Weighted-Average Grant Date Fair Value (per Share)
Beginning balance (in dollars per share) | $ / shares	$ 48.73
Granted (in dollars per share) | $ / shares	40.19
Released (in dollars per share) | $ / shares	47.30
Cancelled (in dollars per share) | $ / shares	52.06
Ending balance (in dollars per share) | $ / shares	$ 45.71
RSAs
Number of Shares
Beginning balance (in shares) | shares	500
Granted (in shares) | shares	0
Vested and released (in shares) | shares	(149)
Cancelled (in shares) | shares	0
Ending balance (in shares) | shares	351
Weighted-Average Grant Date Fair Value (per Share)
Beginning balance (in dollars per share) | $ / shares	$ 52.55
Granted (in dollars per share) | $ / shares	0
Released (in dollars per share) | $ / shares	50.74
Cancelled (in dollars per share) | $ / shares	0
Ending balance (in dollars per share) | $ / shares	$ 53.49