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Debt (Long-term Debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Jan. 01, 2022	Dec. 31, 2021	Sep. 16, 2021	Oct. 07, 2020	Nov. 15, 2019
Debt Instrument [Line Items]
Less: Unamortized discount	$ (3,809)		$ (91,593)
Deferred issuance costs	(9,913)		(9,056)
Less: current portion	0		(54,609)
Total long-term debt, less current portion	1,122,945		1,036,018
Carrying Value
Debt Instrument [Line Items]
Total debt	1,122,945		1,090,627
Senior Notes \| 4.625% Senior Notes
Debt Instrument [Line Items]
Stated interest rate					4.625%
Long-term Debt, Gross	586,667		641,276
Convertible Debt
Debt Instrument [Line Items]
Long-term Debt, Gross	1,136,667		1,191,276
Convertible Debt \| 1.75% Convertible Notes
Debt Instrument [Line Items]
Stated interest rate		1.75%				1.75%
Long-term Debt, Gross	$ 550,000		$ 550,000
Deferred issuance costs						$ (2,800)
Bridge Loan \| Bridge Loan Facility \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate				1.00%