Interest Expense (Tables)

12 Months Ended

Dec. 31, 2023

Other Income and Expenses [Abstract]

Schedule of other (expenses) income

Interest expense consists of the following (dollars in thousands):

	Years Ended December 31,
	2023		2022		2021
Interest expense	$	(1,321)	$	(2,542)	$	(2,195)
Noncash interest expense on nonrecourse liability related to sale of future royalties	(562)		(2,416)		(3,727)
Noncash interest expense on debt	(532)		(2,112)		(17,501)
Total	$	(2,415)	$	(7,070)	$	(23,423)