Equity Incentive Plans - Summary of Changes in Shares Available for Grant (Details) - 2019 Equity Incentive Plan	12 Months Ended
	Dec. 31, 2021 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares Available for Grant, Outstanding, Beginning Balance	18,617,001
Shares Available for Grant, 2019 Equity Incentive Plan reserve increase	6,882,344
Shares Available for Grant, Options and restricted stock units granted	(4,306,265)
Shares Available for Grant, Options and restricted stock units forfeited, cancelled or expired	1,106,843
Shares Available for Grant, Outstanding, Ending Balance	22,299,923