Interest Expense (Tables)

6 Months Ended

Jun. 30, 2023

Other Income and Expenses [Abstract]

Schedule of interest expense

The following details the composition of interest expense (dollars in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
	(unaudited)				(unaudited)
Interest expense	$	(665)	$	(1,175)	$	(1,853)	$	(2,330)
Interest expense on nonrecourse liability related to sale of future royalties	(245)		(635)		(562)		(1,422)
Total	$	(910)	$	(1,810)	$	(2,415)	$	(3,752)