Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenue
Net product sales	$ 28,097	$ 8,995
Licensing revenue	36	86
Total revenue	28,133	9,081
Costs and expenses
Cost of product sales	1,618	494
Research and development	3,683	4,482
Selling, general and administrative	19,402	17,527
Total costs and expenses	24,703	22,503
Operating income (loss)	3,430	(13,422)
Other income (expense)
Interest income	113	102
Interest expense	(381)	(1,207)
Changes in fair value of derivative liabilities	(49)	677
Loss on extinguishment of debt	(2,134)	(1,693)
Total other income (expense)	(2,451)	(2,121)
Earnings (loss) before income taxes	979	(15,543)
Income tax expense	62
Net income (loss)	$ 917	$ (15,543)
Income (loss) per common share:
Basic	$ 0.02	$ (0.38)
Diluted	$ 0.02	$ (0.38)
Weighted-average number of common shares:
Basic (in shares)	44,563,299	41,129,055
Diluted (in shares)	44,901,298	41,129,055