Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues:
Total Revenues	$ 29,677	$ 12,175	$ 49,446	$ 23,456
Cost of sales	4,923	4,566	8,975	7,981
Expenses:
Research and development		854		3,338
Selling, general and administrative	21,955	14,021	38,944	27,526
Total Expenses:	21,955	14,875	38,944	30,864
Income (loss) from operations	2,799	(7,266)	1,527	(15,389)
Interest expense	(13,937)	(2,525)	(16,498)	(5,030)
Other (expense) income, net	8	1	8	(6)
Loss before income taxes	(11,130)	(9,790)	(14,963)	(20,425)
Income tax benefit (expense)		20		(54)
Net loss attributable to common stockholders	$ (11,130)	$ (9,770)	$ (14,963)	$ (20,479)
Basic and diluted:
Weighted average common stock shares outstanding	83,821,811	59,400,317	77,571,003	58,735,351
Basic and diluted loss per share	$ (0.13)	$ (0.16)	$ (0.19)	$ (0.35)
Product Sales [Member]
Revenues:
Total Revenues	$ 28,056	$ 10,766	$ 47,815	$ 20,604
Product Royalty Revenues [Member]
Revenues:
Total Revenues	1,461	1,386	1,471	1,826
Contract Revenues [Member]
Revenues:
Total Revenues	$ 160	$ 23	$ 160	$ 1,026