Debt - Convertible Subordinated Notes (Details) $ / shares in Units, $ in Thousands			1 Months Ended		3 Months Ended
	Mar. 07, 2022 USD ($)	Jul. 31, 2014 $ / shares $ / Item	Jul. 31, 2014 $ / shares $ / Item shares	Jan. 31, 2013 USD ($) Item $ / shares $ / Item shares	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2016 USD ($)
Debt
Payment for repurchase of debt instrument					$ 165,131	$ 0
Accrued interest payable					1,397		$ 4,152
Loss on extinguishment of debt					(20,662)	0
Liability component
Principal					549,707		433,484
Debt discount and issuance costs, net					$ (10,960)		(38,831)
Convertible subordinated notes | Privately-negotiated capped call option
Debt
Cap price for the underlying number of shares (in dollars per share) | $ / Item		27.04	27.04
2023 Notes | Convertible subordinated notes
Debt
Loan amount				$ 287,500
Proceeds from issuance of notes payable, net of debt issuance costs				$ 281,200
Debt Instrument, annual interest rate				2.125%
Initial conversion, shares per $1,000 principal amount | shares | shares				35.9903
Adjusted conversion, shares per $1,000 principal amount | shares			50.5818
Conversion price of convertible notes into common stock (in dollars per share) | $ / shares		$ 19.77	$ 19.77	$ 27.79
Ratio of repurchase price to the principal amount					100.00%
Portion of debt retired, face value	$ 144,800				$ 144,800			$ 14,100
Portion of debt retired, carrying value					144,500			$ 13,900
Payment for repurchase of debt instrument	$ 165,600				165,600
Percentage of notes repurchased	60.00%
Accrued interest payable	$ 400
Unamortized debt issuance cost	300
Loss on extinguishment of debt	$ 20,700
Effective interest rate	2.37%
Liability component
Principal	$ 96,200				96,207		240,984
Debt discount and issuance costs, net	$ (200)				191		620
Net Carrying Amount					96,016
Net Carrying Amount							$ 240,364
Interest expense
Contractual interest expense					1,084	1,280
Amortization of debt issuance costs					122	141
Total interest and amortization expense					$ 1,206	$ 1,421
2023 Notes | Convertible subordinated notes | Privately-negotiated capped call option
Debt
Payments for capped call options				$ 36,800
Number of derivative instruments purchased | Item				2
Strike price for the underlying number of shares (in dollars per share) | $ / shares		$ 27.79	$ 19.77	$ 27.79
Cap price for the underlying number of shares (in dollars per share) | $ / Item		38.00	38.00	38.00
2023 Notes | Convertible subordinated notes | Stock prices below $27.79 per share | Minimum
Debt
Net shares settlement payable to the entity | shares				0
2023 Notes | Convertible subordinated notes | Stock prices above $38.00 per share | Maximum
Debt
Net shares settlement payable to the entity | shares				2,779,659