Stock-Based Compensation - Stock option activity (Details) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2022 USD ($) $ / shares shares
Weighted Average Exercise Price
Shares surrendered to satisfy exercise price and/or tax withholding requirements (in shares)	6,073
Stock Incentive Plan | Stock Options
Option Shares Outstanding
Beginning balance outstanding (in shares)	1,833,246
Granted (in shares)	30,429
Exercise of stock options (in shares)	(65,411)
Forfeited (in shares)	(8,100)
Ending balance outstanding (in shares)	1,790,164
Weighted Average Exercise Price
Beginning balance outstanding (in dollars per share) | $ / shares	$ 57.69
Granted (in dollars per share) | $ / shares	93.68
Exercise of stock options (in dollars per share) | $ / shares	41.32
Forfeited (in dollars per share) | $ / shares	77.56
Ending balance outstanding (in dollars per share) | $ / shares	$ 58.81
Exercisable (in shares)	1,207,235
Exercisable (in dollars per share) | $ / shares	$ 50.84
Weighted average remaining life outstanding (in years)	6 years 2 months 12 days
Weighted average remaining life exercisable (in years)	5 years 1 month 6 days
Aggregate intrinsic value outstanding | $	$ 27,369
Aggregate intrinsic value exercisable | $	$ 26,444