Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues:
Revenues	$ 166,703	$ 156,471	$ 111,389
Cost of sales	23,373	24,665	21,590
Expenses:
Selling, general and administrative	106,206	98,827	86,063
Total expenses	106,206	98,827	86,063
Income from operations	37,124	32,979	3,736
Interest expense, net of interest income	(7,496)	(7,013)	(19,040)
Other (expense) income, net	(6)	(3)	4
Income (loss) before taxes	29,622	25,963	(15,300)
Income tax benefit (expense)	55,238	(252)	(5)
Net income (loss) attributable to common stockholders	$ 84,860	$ 25,711	$ (15,305)
Basic:
Weighted average common stock shares outstanding (in shares)	99,320,285	99,830,520	83,213,704
Basic income (loss) per share (in dollars per share)	$ 0.85	$ 0.26	$ (0.18)
Diluted:
Diluted weighted average common stock shares outstanding (in shares)	103,292,988	105,062,522	83,213,704
Diluted income (loss) per share (in dollars per share)	$ 0.82	$ 0.24	$ (0.18)
Product sales, net
Revenues:
Revenues	$ 164,598	$ 154,574	$ 107,888
Product royalty revenues
Revenues:
Revenues	2,105	1,897	3,341
Contract revenue
Revenues:
Revenues	$ 0	$ 0	$ 160