Stock-Based Compensation - Schedule of RSU Activity (Details) - Unvested restricted stock units	9 Months Ended
	Sep. 30, 2021 $ / shares shares
Number of Restricted Stock Units
Unvested beginning balance (in shares) | shares	1,493,122
Granted (in shares) | shares	3,089,923
Forfeited (in shares) | shares	(102,964)
Released (in shares) | shares	(1,064,858)
Vested and not yet released (in shares) | shares	(60,232)
Unvested ending balance (in shares) | shares	3,354,991
Weighted Average Grant Date Fair Value
Unvested beginning balance (in dollars per share) | $ / shares	$ 13.14
Granted (in dollars per share) | $ / shares	33.67
Forfeited (in dollars per share) | $ / shares	15.05
Released (in dollars per share) | $ / shares	15.51
Veseted and not yet released (in dollars per share) | $ / shares	35.26
Unvested ending balance (in dollars per share) | $ / shares	$ 30.84