Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Total revenue	$ 43,766	$ 52,775
Operating costs and expenses:
Cost of sales	10,728	13,218
Selling, general and administrative	21,750	22,486
Research and development	13,587	12,706
Total operating costs and expenses	46,065	48,410
(Loss) income from operations	(2,299)	4,365
Other income (expenses):
Interest income	972	537
Interest expense	(3,359)	(3,312)
Other income (expense)	91	(42)
Total other expenses, net	(2,296)	(2,817)
Net (loss) income before income taxes	(4,595)	1,548
Income tax expense	(220)	(147)
Net (loss) income	$ (4,815)	$ 1,401
Net (loss) income per share of common stock—basic (in dollars per share)	$ (0.1)	$ 0.03
Net (loss) income per share of common stock—diluted (in dollars per share)	$ (0.1)	$ 0.03
Weighted-average shares of common stock outstanding—basic (in shares)	48,189,256	46,636,083
Weighted-average shares of common stock outstanding—diluted (in shares)	48,189,256	47,157,904
Product [Member]
Total revenue	$ 40,279	$ 46,794
Royalty [Member]
Total revenue	$ 3,487	$ 5,981