CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Total Revenues	$ 178	$ 230
Operating expenses:
Research and development	4,452	4,255
Selling, general and administrative	4,417	5,732
Total operating expenses	8,869	9,987
Operating loss	(8,691)	(9,757)
Interest expense	0	(1,062)
Other expense	(3)	(57)
Loss from continuing operations before income taxes	(8,694)	(10,876)
Income tax expense	0	0
Loss from continuing operations	(8,694)	(10,876)
Income (loss) from discontinued operations, net of income taxes	13,364	(9,674)
Net income (loss)	$ 4,670	$ (20,550)
Loss per share from continuing operations, basic (in dollars per share)	$ (0.16)	$ (0.22)
Loss per share from continuing operations, diluted (in dollars per share)	(0.16)	(0.22)
Income (Loss) per share from discontinuing operations, basic (in dollars per share)	0.24	(0.20)
Income (Loss) per share from discontinuing operations, diluted (in dollars per share)	0.24	(0.20)
Income (Loss) per share basic (in dollars per share)	0.08	(0.42)
Income (Loss) per share diluted (in dollars per share)	$ 0.08	$ (0.42)
Weighted average shares outstanding - basic (in shares)	55,386	48,868
Weighted average shares outstanding - diluted (in shares)	55,386	48,868
Royalty revenues
Total Revenues	$ 178	$ 230