Stock Incentive Plans and Stock-Based Compensation - Activity Under Stock Incentive Plan (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) $ / shares shares
Stock Options Outstanding
Beginning balance (in shares) | shares	3,369,502
Granted (in shares) | shares	53,908
Exercised (in shares) | shares	(170,484)
Forfeited/Cancelled (in shares) | shares	(74,584)
Ending balance (in shares) | shares	3,178,342
Options exercisable, number of options (in shares) | shares	836,184
Exercise Price
Beginning balance (in dollars per share) | $ / shares	$ 28.11
Granted (in dollars per share) | $ / shares	75.44
Exercised (in dollars per share) | $ / shares	5.67
Forfeited/Cancelled (in dollars per share) | $ / shares	24.69
Ending balance (in dollars per share) | $ / shares	30.20
Options exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 13.48
Stock Option Activity, Additional Disclosures
Options outstanding, weighted average remaining contractual term	8 years 6 months 21 days
Options exercisable, weighted average remaining contractual term	7 years 6 months 14 days
Options outstanding, aggregate intrinsic value | $	$ 122,017
Options exercisable, aggregate intrinsic value | $	$ 45,970