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Liability Related to the Sale of Future Royalties (Tables) | 3 Months Ended
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Dec. 31, 2024
Liability Related To The Sale Of Future Royalties [Abstract] |
Schedule of Liability Related to the Sale of Future Royalties | The following table presents the activity with respect to the liability related to the sale of future royalties.
|  | December 31, 2024 |  | September 30, 2024
|  | (in thousands)
Beginning carrying value |  | $ | 341,361 |  |  | $ | 268,326 |
Milestone payment received |  | — |  |  | 50,000 |
Non-cash interest expense recognized |  | 5,415 |  |  | 23,035 |
Ending carrying value |  | $ | 346,776 |  |  | $ | 341,361 |

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