Debt - Components of Convertible Senior Notes (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Mar. 25, 2021	Dec. 31, 2020	Oct. 20, 2020	Jul. 23, 2018
2023 notes
Debt Instrument [Line Items]
Aggregate Principal Amount	$ 23,512
Net Carrying Amount	23,280		$ 22,482
2023 notes | Senior Notes
Debt Instrument [Line Items]
Aggregate Principal Amount	23,512		25,626		$ 143,750
Unamortized Debt Discount	0		2,776
Unamortized Debt Issuance Costs	232		368
Net Carrying Amount	23,280		22,482
2025 notes
Debt Instrument [Line Items]
Aggregate Principal Amount	661,250
Net Carrying Amount	650,783		488,268
2025 notes | Senior Notes
Debt Instrument [Line Items]
Aggregate Principal Amount	661,250		661,250	$ 661,250
Unamortized Debt Discount	0		163,077
Unamortized Debt Issuance Costs	10,467		9,905
Net Carrying Amount	650,783		488,268
2027 notes
Debt Instrument [Line Items]
Aggregate Principal Amount	575,000
Net Carrying Amount	563,234		$ 0
2027 notes | Senior Notes
Debt Instrument [Line Items]
Aggregate Principal Amount	575,000	$ 575,000
Unamortized Debt Discount	0
Unamortized Debt Issuance Costs	11,766
Net Carrying Amount	$ 563,234