CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - Class of Stock [Domain] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Product sales, net	$ 8,647	$ 6,021	$ 19,157	$ 12,520
Research and development income	187	437	238	750
Licensing, royalty and other revenue	59	25	169	66
Total revenues	8,893	6,483	19,564	13,336
Costs and Expenses:
Cost of revenues	5,227	3,580	10,270	7,567
Selling, general and administrative expenses	2,141	1,156	4,041	2,438
Product development and research expenses	3,436	2,028	6,066	3,393
Total costs and expenses	10,804	6,764	20,377	13,398
Operating loss	(1,911)	(281)	(813)	(62)
Other Income (Expense):
Change in the fair value of derivative liability	14,519	0	23,144	0
Interest and other expense, net	(3,232)	(52)	(6,400)	(104)
Income (loss) before income tax expense	9,376	(333)	15,931	(166)
Income tax expense	0	12	0	12
Net income (loss)	$ 9,376	$ (345)	$ 15,931	$ (178)
Basic earnings (loss) per share	$ 0.18	$ (0.01)	$ 0.30	$ 0.00
Diluted loss per share	$ (0.03)	$ (0.01)	$ (0.02)	$ 0.00
Weighted average shares of common stock outstanding:
Basic (in shares)	52,861,167	47,107,094	52,851,587	46,967,688
Diluted (in shares)	67,125,905	47,107,094	67,174,546	46,967,688