CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues:
Total revenues	$ 35,131	$ 25,373	$ 71,670	$ 52,213
Costs and expenses:
Cost of sales	4,528	3,921	8,723	7,886
Selling, general and administrative expenses	10,543	24,040	21,184	32,364
Fair value of contingent consideration	1,300	2,195	2,945	1,602
Amortization of intangible assets	7,969	7,218	16,469	13,764
Restructuring charges	0	0	0	1,089
Total costs and expenses	24,340	37,374	49,321	56,705
Income (loss) from operations	10,791	(12,001)	22,349	(4,492)
Other (expense) income:
Interest expense	(2,269)	(2,605)	(4,596)	(5,288)
Other (loss) gain	(95)	137	451	403
Total other expense	(2,364)	(2,468)	(4,145)	(4,885)
Net income (loss) before income taxes	8,427	(14,469)	18,204	(9,377)
Income tax (expense) benefit	(593)	300	(1,306)	(248)
Net income (loss)	7,834	(14,169)	16,898	(9,625)
Comprehensive income (loss)	$ 7,834	$ (14,169)	$ 16,898	$ (9,625)
Basic net income (loss) per share (in dollars per share)	$ 0.17	$ (0.32)	$ 0.37	$ (0.23)
Diluted net income (loss) per share (in dollars per share)	$ 0.16	$ (0.32)	$ 0.36	$ (0.23)
Shares used in computing basic net income (loss) per share (in shares)	46,274	44,706	45,746	41,321
Shares used in computing diluted net income (loss) per share (in shares)	47,579	44,706	46,857	41,321
Revision of Prior Period, Reclassification, Adjustment
Costs and expenses:
Selling, general and administrative expenses		$ (2,200)		$ (1,600)
Fair value of contingent consideration		2,200		1,600
Product sales, net
Revenues:
Total revenues	$ 35,430	25,244	$ 70,977	51,274
Product sales, net | Revision of Prior Period, Reclassification, Adjustment
Revenues:
Total revenues		400		100
Royalties and milestones
Revenues:
Total revenues	451	542	1,443	975
Other revenue
Revenues:
Total revenues	$ (750)	(413)	$ (750)	(36)
Other revenue | Revision of Prior Period, Reclassification, Adjustment
Revenues:
Total revenues		$ (400)		$ (100)