Quarterly report pursuant to Section 13 or 15(d)

Royalty Linked Notes - Summary of Royalty-Linked Notes (Details)

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Royalty Linked Notes - Summary of Royalty-Linked Notes (Details) - USD ($)
$ in Thousands
47 Months Ended 50 Months Ended
Dec. 31, 2023
Mar. 31, 2024
Sep. 08, 2020
Royalty Linked Notes [Abstract]      
Total liability related to the sale of future royalties, on inception $ 10,990 $ 10,990  
Liability related to the sale of future royalties, arising from the Rights Offering     $ 51
Amortization of discount and debt issuance costs 3,666 3,666  
Adjustments to fair value (7,204) (6,818)  
Total liability related to the sale of future royalties 7,503 7,889  
Long-term Portion $ 7,503 $ 7,889