Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Total Revenues	$ 12,175	$ 8,744	$ 23,456	$ 38,220
Cost of sales	4,566	4,171	7,981	9,816
Expenses:
Research and development	854	1,590	3,338	4,260
Selling, general and administrative	14,021	15,970	27,526	29,227
Total Expenses:	14,875	17,560	30,864	33,487
Loss from operations	(7,266)	(12,987)	(15,389)	(5,083)
Interest expense	(2,525)	(1,878)	(5,030)	(4,764)
Other expense, net	1	(14)	(6)	(15)
Bargain purchase gain				27,336
(Loss) income before income taxes	(9,790)	(14,879)	(20,425)	17,474
Income tax benefit (expense)	20		(54)	15,972
Net (loss) income attributable to common stockholders	$ (9,770)	$ (14,879)	$ (20,479)	$ 33,446
Basic
Basic (loss) income per share:	$ (0.16)	$ (0.27)	$ (0.35)	$ 0.61
Weighted average common stock shares outstanding:	59,400,317	55,388,774	58,735,351	54,949,901
Diluted
Diluted (loss) income per share:	$ (0.16)	$ (0.27)	$ (0.35)	$ 0.60
Diluted weighted average common stock shares outstanding:	59,400,317	55,388,774	58,735,351	55,836,769
Product Sales [Member]
Revenues:
Total Revenues	$ 10,766	$ 7,886	$ 20,604	$ 15,680
Product Royalty Revenues [Member]
Revenues:
Total Revenues	1,386	613	1,826	2,273
Research And Development Reimbursements [Member]
Revenues:
Total Revenues		$ 245		267
Contract Revenues [Member]
Revenues:
Total Revenues	$ 23		$ 1,026	$ 20,000