CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
License fee revenue	$ 0	$ 2,500
Collaboration revenue	0	36
Royalty revenue	198	74
Product sales, net	0	107
Total revenues, net	198	2,717
Cost and expenses:
Cost of sales	0	128
Research and development	650	711
Sales, marketing, general and administrative	943	1,296
Total costs and expenses	1,593	2,135
Operating (loss) income	(1,395)	582
Interest expense, net (Note 8)	(99)	(177)
(Loss) income before income taxes	(1,494)	405
Provision for income taxes	0	0
Net (loss) income	$ (1,494)	$ 405
Net (loss) income per share:
Basic	$ (0.07)	$ 0.03
Diluted	$ (0.07)	$ 0.03
Weighted average shares outstanding:
Basic	21,034	11,907
Diluted	21,034	12,083