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Fair Value Measurements - Narrative (Details) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 | Oct. 07, 2020 | Nov. 15, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Unrealized (loss) gain on short-term investments held at the reporting date, net | $ (28,500) | $ (7,100) |  |  |
Short-term investments | $ 27,109 | $ 58,421 |  |  |
4.625% Senior Notes Due in 2030 | Senior Notes |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Stated interest rate |  |  |  | 4.625% |
1.75% Convertible Notes | Convertible Debt |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Stated interest rate |  |  | 1.75% |  | 1.75%
Measurement Input, Discount Rate |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Measurement input | 0.13 | 0.14 |  |  |
Measurement Input, Conversion Term |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Debt securities, term |  | 1 year |  |  |
Measurement Input, Conversion Term | Minimum |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Debt securities, term | 11 months |  |  |  |
Measurement Input, Conversion Term | Maximum |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Debt securities, term | 2 years 8 months |  |  |  |

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