Equity Incentive Plans and Stock-Based Compensation - Summary of the Activity Under the Stock Plan (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Shares Available for Grant, Beginning balance		29,375,026	64,701,181
Beginning Balance, Shares Recapitalization		38,002,437
Balance as of March 31, 2021		67,377,463	64,701,181
Stock Options, Granted			98,832
Shares Available for Grant, Exercised	0		(1,555,196)
Shares Available for Grant, Cancelled/Forfeited/Expired			(1,219,918)
Shares Available for Grant, Ending balance		29,375,026	64,701,181
Ending Vested and exercisable, Shares Available for Grant			41,966,104
Weighted-Average Exercise Price, Beginning balance		$ 9.37	$ 4.09
Weighted-Average Exercise Price, Recapitalization		(5.28)
Balance as of March 31, 2021		4.09
Weighted-Average Exercise Price, Granted			8.20
Weighted-Average Exercise Price, Exercised			3.51
Weighted-Average Exercise Price, Cancelled/Forfeited/Expired			4.91
Weighted-Average Exercise Price, Ending balance		$ 9.37	4.09
Weighted-Average Exercise Price, Vested and exercisable			$ 3.59
Weighted-Average Remaining Contractual Term (Years)		7 years 1 month 6 days	6 years 7 months 6 days
Weighted-Average Remaining Contractual Term (Years), Vested and Exercisable			5 years 8 months 12 days
Aggregate Intrinsic Value of Options Outstanding		$ 403,498	$ 321,468
Aggregate Intrinsic Value of Options Outstanding, Vested and Exercisable			$ 229,424