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Liability Related to the Sale of Future Royalties (Tables) | 6 Months Ended
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Mar. 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.
|  | Carrying Amount
|  | (in thousands)
Carrying value as of September 30, 2023 |  | $ | 268,326 |
Non-cash interest expense recognized |  | 12,612 |
Carrying value as of March 31, 2024 |  | $ | 280,938 |

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