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Debt - Equity and Liability Components of the Notes (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Debt Instrument [Line Items] |  |
Total interest expense | $ 305,845 | $ 105,844
Convertible Debt | Convertible Senior Notes Due 2024 |  |
Debt Instrument [Line Items] |  |
Principal amount of notes outstanding | 13,750 | 13,750
Unamortized discount and unamortized debt issuance cost | (1,904) | (2,619)
Total interest expense | 11,846 | 11,131
Convertible Debt | Convertible Senior Notes Due 2026 |  |
Debt Instrument [Line Items] |  |
Principal amount of notes outstanding | 120,000 | 120,000
Unamortized discount and unamortized debt issuance cost | (21,853) | (25,986)
Total interest expense | 98,147 | 94,014
Convertible Debt | Convertible Senior Notes Due 2027 |  |
Debt Instrument [Line Items] |  |
Principal amount of notes outstanding | 265,000 |
Unamortized discount and unamortized debt issuance cost | (69,148) |
Total interest expense | 195,852 |
Convertible Debt | Senior Notes Due in 2024, 2026 and 2027 |  |
Debt Instrument [Line Items] |  |
Principal amount of notes outstanding | 398,750 |
Unamortized discount and unamortized debt issuance cost | (92,905) |
Total interest expense | $ 305,845 |
Convertible Debt | Senior Notes Due in 2024 and 2026 |  |
Debt Instrument [Line Items] |  |
Principal amount of notes outstanding |  | 133,750
Unamortized discount and unamortized debt issuance cost |  | (28,605)
Total interest expense |  | $ 105,145

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