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Fair Value Measurements (Carrying and Fair Value) (Details) - USD ($) | Jul. 16, 2024 | Sep. 30, 2024 | Dec. 31, 2023 | Oct. 07, 2020 | Nov. 15, 2019
--- | --- | --- | --- | --- | ---
4.625% Senior Notes | Carrying Value |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Fair value of debt instruments |  | $ 457,106,000 | $ 456,796,000 |  |
4.625% Senior Notes | Fair Value |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Fair value of debt instruments |  | 432,785,000 | 405,408,000 |  |
4.625% Senior Notes | Senior Notes |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Stated interest rate |  |  |  | 4.625% |
Aggregate principal amount |  |  |  | $ 750,000,000 |
1.75% Convertible Notes | Carrying Value |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Fair value of debt instruments |  | 148,062,000 | 544,516,000 |  |
1.75% Convertible Notes | Fair Value |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Fair value of debt instruments |  | 138,850,000 | 519,492,000 |  |
1.75% Convertible Notes | Convertible Debt |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Stated interest rate |  |  |  |  | 1.75%
Aggregate principal including cash payment | $ 400,900,000 |  |  |  |
Aggregate principal amount |  | 149,100,000 |  |  | $ 550,000,000.0
Repayments of convertible debt | $ 135,000,000 |  |  |  |
3.625% Convertible Notes | Carrying Value |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Fair value of debt instruments |  | 258,573,000 | 0 |  |
3.625% Convertible Notes | Fair Value |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Fair value of debt instruments |  | $ 251,484,000 | $ 0 |  |
3.625% Convertible Notes | Convertible Debt |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Stated interest rate | 3.625% |  |  |  |
Aggregate principal amount | $ 263,100,000 |  |  |  |

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