Long-term Debt - Convertible Senior Notes (Additional Notes) (Details) $ / shares in Units, $ in Thousands					1 Months Ended				2 Months Ended	3 Months Ended				6 Months Ended	12 Months Ended
	Nov. 09, 2021 USD ($) $ / shares	Aug. 14, 2021 USD ($)	Aug. 14, 2020 USD ($) $ / shares	Sep. 11, 2018 USD ($)	Dec. 31, 2021 USD ($)	Aug. 31, 2021 USD ($)	Nov. 30, 2020 USD ($)	Aug. 31, 2020 USD ($)	Dec. 31, 2021 USD ($) shares	Mar. 31, 2022 USD ($) day $ / shares Rate	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Mar. 31, 2021	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jan. 01, 2022 USD ($)
Debt Instrument [Line Items]
Payments for Repurchase of Convertible Debt						$ 13,900
Share price at closing (in dollars per share) | $ / shares										$ 110.09
Retained earnings					$ 271,732				$ 271,732	$ 301,007	$ 271,732				$ 271,732
Long-term debt, net					326,126				326,126	$ 392,907	326,126				326,126
Cumulative effect, period of adoption, adjustment
Debt Instrument [Line Items]
Retained earnings																	$ 2,100
Long-term debt, net																	66,200
Deferred Tax Assets, Tax Deferred Expense																	16,800
Additional Paid in Capital																	51,500
2023 Notes
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt						300
2023 Notes | Warrants related to the issuance of convertible senior notes
Debt Instrument [Line Items]
Warrant exercise price (in dollars per share) | $ / shares										$ 46.62
2025 Notes | Cumulative effect, period of adoption, adjustment
Debt Instrument [Line Items]
Retained earnings																	900
Long-term debt, net																	3,600
Deferred Tax Assets, Tax Deferred Expense																	900
Additional Paid in Capital																	3,600
2025 Notes | Warrants related to the issuance of convertible senior notes
Debt Instrument [Line Items]
Warrant exercise price (in dollars per share) | $ / shares										81.05
2026 Notes | Cumulative effect, period of adoption, adjustment
Debt Instrument [Line Items]
Retained earnings																	1,200
Long-term debt, net																	62,600
Deferred Tax Assets, Tax Deferred Expense																	15,900
Additional Paid in Capital																	$ 47,900
2026 Notes | Warrants related to the issuance of convertible senior notes
Debt Instrument [Line Items]
Warrant exercise price (in dollars per share) | $ / shares										$ 295.29
Convertible debt | Conversion Circumstance One
Debt Instrument [Line Items]
Conversion rate of the notes on trading day (as percent)										130.00%
Threshold trading days (whether or not consecutive) | day										20
Consecutive trading day period (in days) | day										30
Convertible debt | Conversion Circumstance Two
Debt Instrument [Line Items]
Conversion rate of the notes on trading day (as percent) | Rate										98.00%
Threshold trading days (whether or not consecutive) | day										5
Consecutive trading day period (in days) | day										10
Convertible debt | 2023 Notes
Debt Instrument [Line Items]
Aggregated principal amount				$ 143,800
Interest rate stated, percentage				2.375%
Initial purchasers' discount and issuance costs				$ 4,400	100				100		100			$ (2,400)	100
Proceeds from debt, net of issuance costs				$ 139,400
Payments for Repurchase of Convertible Debt							$ 9,700	$ 172,000
Principal																$ 5,100
Payment of interest														1,300
Gain (Loss) on Extinguishment of Debt														(4,500)
Debt Conversion, Converted Instrument, Rate													5.00%
Convertible debt | 2025 Notes
Debt Instrument [Line Items]
Aggregated principal amount			$ 230,000
Interest rate stated, percentage			1.25%
Initial purchasers' discount and issuance costs			$ 7,300		3,800				3,800		3,800				3,800
Proceeds from debt, net of issuance costs			222,700
Payments for Repurchase of Convertible Debt			172,000												(197,400)
Cost of entering into hedges, net of warrants			26,700
Payments for working capital or other general corporate purposes			$ 24,000
Shares conversion rate			19.3538
Initial conversion price (in dollars per share) | $ / shares			$ 51.67
Principal					23,293				23,293	$ 23,293	23,293				23,293
Gain (Loss) on Extinguishment of Debt															21,900
Proceeds from Issuance of Long-term Debt									$ (311,500)
Debt Conversion, Converted Instrument, Shares Issued | shares									1,640,152
Long-term Debt, Fair Value			$ 181,100
Debt borrowing rate, percentage			6.30%
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt			$ 48,900
Deferred Tax Liability, Convertible Debt Discount			12,600
Deferred financing cost			7,300
Deferred Finance Costs, Attributable to Liability Component			5,700
Deferred Finance Costs, Equity Component			1,600
Deferred Tax Asset, Equity Component Deferred Finance Costs			$ 400
Interest Expense, Debt									$ 700
Repayments of Long-term Debt					(44,000)
Debt Instrument, Convertible, Carrying Amount of Equity Component					400,500				400,500		400,500				400,500
Deferred Tax Liabilities, Deferred Expense, Debt Issuance Costs					2,000				$ 2,000		2,000				2,000
Debt Conversion, Converted Instrument, Rate									3.50%
Induced Conversion of Convertible Debt Expense															6,800
Long-term debt, net					19,152				$ 19,152	$ 22,800	19,152				19,152
Convertible debt | 2026 Notes
Debt Instrument [Line Items]
Aggregated principal amount	$ 380,000
Interest rate stated, percentage										0.125%
Initial purchasers' discount and issuance costs	10,700
Proceeds from debt, net of issuance costs	369,300
Cost of entering into hedges, net of warrants	42,700
Payments for working capital or other general corporate purposes	$ 15,100
Shares conversion rate	5.2100
Initial conversion price (in dollars per share) | $ / shares	$ 191.94
Principal					380,000				380,000	$ 380,000	380,000				380,000
Long-term Debt, Fair Value	$ 313,800
Debt borrowing rate, percentage	4.00%
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt	$ 66,100	$ 16,800													66,200
Deferred Tax Liability, Convertible Debt Discount										16,900
Deferred financing cost	10,700
Deferred Finance Costs, Attributable to Liability Component	8,800
Deferred Finance Costs, Equity Component	1,900
Deferred Tax Asset, Equity Component Deferred Finance Costs	$ 500
Long-term debt, net					$ 306,974				$ 306,974	$ 370,107	306,974				306,974
Convertible debt, liability component | 2023 Notes
Debt Instrument [Line Items]
Payments for Repurchase of Convertible Debt						4,900								127,700
Convertible debt, equity component | 2023 Notes
Debt Instrument [Line Items]
Payments for Repurchase of Convertible Debt						$ 9,000								$ 52,700	$ 400
Convertible note hedges | 2023 Notes
Debt Instrument [Line Items]
Proceeds from Sale of Derivatives Related to Convertible Notes																$ 50,100
Convertible note hedges | 2025 Notes
Debt Instrument [Line Items]
Proceeds from Sale of Derivatives Related to Convertible Notes												$ 6,100
Convertible note hedges | 2026 Notes
Debt Instrument [Line Items]
Proceeds from Sale of Derivatives Related to Convertible Notes											$ 375,200