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Liability Related to the Sale of Future Royalties (Tables)
 12 Months Ended
Sep. 30, 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.
September 30,
20242023
(in thousands)
Beginning carrying value
$268,326 $— 
Upfront payment received
— 250,000 
Milestone payment received50,000 — 
Non-cash interest expense recognized23,035 18,326 
Ending carrying value
$341,361 $268,326