Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue	$ 71,757	$ 68,178	$ 130,903	$ 125,477
Operating expenses:
Cost of sales	309	254	532	547
Selling, general and administrative	39,985	43,882	77,739	88,984
Research and development	44,826	37,668	92,719	88,279
Restructuring	0	(160)	0	(284)
Total operating expenses	85,120	81,644	170,990	177,526
Operating loss	(13,363)	(13,466)	(40,087)	(52,049)
Other (expense) income:
Interest expense	(6,669)	(12,589)	(13,342)	(25,008)
Other (expense) income, net	(289)	721	(342)	2,179
Total other (expense), net	(6,958)	(11,868)	(13,684)	(22,829)
Loss from continuing operations	(20,321)	(25,334)	(53,771)	(74,878)
Income from discontinued operations	12,793	14,240	28,959	23,364
Net loss	$ (7,528)	$ (11,094)	$ (24,812)	$ (51,514)
Net Loss Per Share
Net loss from continuing operations, Basic (in dollars per share)	$ (0.68)	$ (0.76)	$ (1.81)	$ (2.26)
Net loss from continuing operations, Diluted (in dollars per share)	(0.68)	(0.76)	(1.81)	(2.26)
Net income from discontinued operations, Basic (in dollars per share)	0.43	0.43	0.97	0.70
Net income from discontinued operations, Diluted (in dollars per share)	0.43	0.43	0.97	0.70
Net loss, Basic (in dollars per share)	(0.25)	(0.33)	(0.83)	(1.55)
Net loss, Diluted (in dollars per share)	$ (0.25)	$ (0.33)	$ (0.83)	$ (1.55)
Weighted average common and potential common shares outstanding:
Basic (in shares)	29,747	33,179	29,721	33,159
Diluted (in shares)	29,747	33,179	29,721	33,159
Product
Revenue	$ 71,757	$ 68,178	$ 130,903	$ 125,477