Stock Incentive Plans and Stock-Based Compensation - Activity Under Stock Incentive Plan (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2021
Stock Options Outstanding
Beginning balance (in shares)	3,369,502
Granted (in shares)	149,837
Exercised (in shares)	(282,685)
Forfeited/Cancelled (in shares)	(106,831)
Ending balance (in shares)	3,129,823
Options exercisable, number of options (in shares)	932,684
Exercise Price
Beginning balance (in dollars per share)	$ 28.11
Granted (in dollars per share)	69.02
Exercised (in dollars per share)	8.22
Forfeited/Cancelled (in dollars per share)	31.16
Ending balance (in dollars per share)	31.76
Options exercisable, weighted average exercise price (in dollars per share)	$ 15.66
Stock Option Activity, Additional Disclosures
Options outstanding, weighted average remaining contractual term	8 years 4 months 17 days
Options exercisable, weighted average remaining contractual term	7 years 5 months 23 days
Options outstanding, aggregate intrinsic value	$ 130,366
Options exercisable, aggregate intrinsic value	$ 53,790