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Liability Related to the Sale of Future Royalties (Tables)
6 Months Ended
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 recognized12,612 
Carrying value as of March 31, 2024$280,938