Stock-based Compensation - Summary of Company's Stock Option Activity (Detail) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Beginning balance (in shares) | shares	63,267,000
Granted (in shares) | shares	0
Cancelled (in shares) | shares	(990,000)
Exercised (in shares) | shares	(6,356,000)
Ending balance (in shares) | shares	55,921,000	63,267,000
Exercisable (in shares) | shares	37,003,000
Vested and expected to vest (in shares) | shares	55,921,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Beginning balance, weighted average exercise price (in dollars per share) | $ / shares	$ 2.82
Granted, weighted average exercise price (in dollars per share) | $ / shares	0
Cancelled, weighted average exercise price (in dollars per share) | $ / shares	3.98
Exercised, weighted average exercise price (in dollars per share) | $ / shares	2.46
Ending balance, weighted average exercise price (in dollars per share) | $ / shares	2.84	$ 2.82
Exercisable, weighted average exercise price (in dollars per share) | $ / shares	2.14
Vested and expected to vest, weighted average exercise price (in dollars per share) | $ / shares	$ 2.84
Remaining contractual tern	6 years 5 months 26 days	6 years 11 months 19 days
Exercisable, remaining contractual term	5 years 11 months 1 day
Vested and expected to vest, remaining contractual term	6 years 5 months 26 days
Aggregate intrinsic value | $	$ 1,678,915	$ 6,348,395
Exercisable, aggregate intrinsic value | $	1,136,588
Vested and expected to vest, aggregate intrinsic value | $	$ 1,678,915