UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF LOSS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues:
Total revenues	$ 17,554	$ 29,230	$ 33,991	$ 62,523
Operating expenses:
Cost of products	3,622	3,512	6,888	10,104
Research and development expenses	10,292	11,890	17,621	21,841
Selling, general and administrative expenses	6,758	27,843	17,204	52,330
Intangible asset amortization	204	1,609	405	3,376
Changes in fair value of related party contingent consideration	(377)	(12,889)	1,757	(9,921)
Restructuring costs	1,506	50	2,734	203
Total operating expenses	22,005	32,015	46,609	77,933
Operating loss	(4,451)	(2,785)	(12,618)	(15,410)
Investment and other income, net	950	583	1,767	637
Interest expense	(3,106)	(2,980)	(6,168)	(4,577)
Loss on deconsolidation of subsidiary	(167)	0	(2,840)	0
Other (expense) income - changes in fair value of related party payable	(50)	1,402	(357)	1,007
Loss before income taxes	(6,824)	(3,780)	(20,216)	(18,343)
Income tax provision (benefit)	1,781	(342)	1,407	(2,669)
Net loss	$ (8,605)	$ (3,438)	$ (21,623)	$ (15,674)
Net income (loss) per share - basic (in dollars per share)	$ (0.23)	$ (0.09)	$ (0.58)	$ (0.42)
Net income (loss) per share - diluted (in dollars per share)	$ (0.23)	$ (0.09)	$ (0.58)	$ (0.42)
Weighted average number of shares outstanding - basic (in shares)	37,356	36,772	37,355	37,666
Weighted average number of shares outstanding - diluted (in shares)	37,356	36,772	37,355	37,666
Product sales
Revenues:
Total revenues	$ 17,554	$ 29,116	$ 33,991	$ 62,277
License revenue
Revenues:
Total revenues	$ 0	$ 114	$ 0	$ 246