Debt - Convertible Senior Notes (Details)	1 Months Ended	2 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2021 USD ($) D	Oct. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 16, 2021 $ / shares	Sep. 15, 2021 $ / shares	Dec. 19, 2019 USD ($)
Debt
Principal Amount of debt									$ 3,000,000.0
Interest rate (stated)									3.00%
Repayment of debt				$ 46,965,000	$ 81,640,000	$ 202,000
Conversion price (per share) | $ / shares							$ 37.74	$ 25
Convertible senior notes, due 2026
Debt
Principal Amount of debt	$ 425,000,000		$ 425,000,000
Interest rate (stated)	0.75%		0.75%
Issue price ( as percentage)	100.00%		100.00%
Net proceeds			$ 413,500,000
Sale price (as percentage)	130.00%
Consecutive trading days | D	30
Threshold trading days | D	20
Redemption price (as percentage)	100.00%
Principal amount denomination for conversion	$ 1,000
Conversion ratio	39.9956
Conversion price (per share) | $ / shares				$ 25.0027
Business days | D	5
Capped calls, authorized shares | shares				5,736,869
Consecutive trading period | D	5
Trading price per $1,000notes (as percentage)				98.00%
Conditional conversion ratio	52.9941
Interest expense				$ 1,600,000
Calculated interest rate				1.30%
Initial strike price | $ / shares				$ 25.0027
Initial cap price | $ / shares				$ 37.7400
Amount paid for capped calls		$ 52,900,000
Notes Issued On Exercise Of Initial Purchasers' Option [Member]
Debt
Principal Amount of debt	$ 40,000,000		$ 40,000,000