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Debt (Tables) - Convertible Senior Notes, Due 2025 | 9 Months Ended
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Sep. 30, 2023
Debt Instrument [Line Items] |
Schedule of Net Carrying Amount of Notes and Impact to Additional Paid-in Capital | The net carrying amount of the 2025 convertible senior notes as of September 30, 2023 and as of December 31, 2022 was as follows (in thousands):
|  | September 30, 2023 |  | December 31, 2022
Principal |  | $ | 747,500 |  |  | $ | 747,500 |
Unamortized issuance costs |  | (6,331) |  |  | (9,124) |
Net carrying amount |  | $ | 741,169 |  |  | $ | 738,376 |
Schedule of Interest Expense Related to the Notes | Interest expense related to the 2025 convertible senior notes was as follows (in thousands):
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, 2023 |  | September 30, 2022 |  | September 30, 2023 |  | September 30, 2022
Contractual interest expense |  | $ | 934 |  |  | $ | 935 |  |  | $ | 2,803 |  |  | $ | 2,804 |
Amortization of issuance costs |  | 954 |  |  | 944 |  |  | 2,793 |  |  | 2,765 |
Total interest expense |  | $ | 1,888 |  |  | $ | 1,879 |  |  | $ | 5,596 |  |  | $ | 5,569 |

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