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Interest Expense (Tables)
 3 Months Ended
Mar. 31, 2024
Other Income and Expenses [Abstract]  
Schedule of interest expense
The following details the composition of interest expense (dollars in thousands):
Three Months Ended
March 31,
20242023
(unaudited)
Interest expense$— $(656)
Interest expense on nonrecourse liability related to sale of future royalties— (317)
Noncash interest expense on debt— (532)
Total$— $(1,505)