Stockholders' Equity and Stock-Based Compensation - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Number of Options
Outstanding, beginning of period (in shares)	3,358
Options exercised (in shares)	(896)
Options canceled (in shares)	(8)
Outstanding, end of period (in shares)	2,454	3,358
Weighted-Average Exercise Price
Outstanding, beginning of period (in dollars per share)	$ 1.53
Options exercised (in dollars per share)	1.28
Options canceled (in dollars per share)	3.35
Outstanding, end of period (in dollars per share)	$ 1.61	$ 1.53
Outstanding, Weighted average remaining contractual term (years)	4 years 4 months 17 days	5 years 3 months 18 days
Outstanding, Aggregate intrinsic value	$ 54,815	$ 104,510
Options exercisable at end of period
Options exercisable (in shares)	2,243
Weighted average exercise price (in dollars per share)	$ 1.33
Weighted average remaining contractual term (years)	4 years 3 months
Aggregate intrinsic value	$ 50,740
Options vested as of end of period and expected to vest after end of period
Options vested and expected to vest (in shares)	2,454
Weighted average exercise price (in dollars per share)	$ 1.61
Weighted-Average Remaining Contractual Term (Years)	4 years 4 months 17 days
Aggregate Intrinsic Value	$ 54,815