Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenue
Net product sales	$ 22,452	$ 1,130	$ 59,056	$ 1,283
Revenue from royalty agreement	30,000		30,000
Licensing revenue	36	127	2,188	401
Total revenue	52,488	1,257	91,244	1,684
Costs and expenses
Cost of product sales	1,321	33	3,476	37
Research and development	4,657	3,779	13,816	11,844
Selling, general and administrative	17,343	14,620	54,452	40,366
Total costs and expenses	23,321	18,432	71,744	52,247
Operating income (loss)	29,167	(17,175)	19,500	(50,563)
Other income (expense)
Interest income	78	96	265	203
Interest expense	(1,289)	(2,870)	(3,774)	(5,742)
Change in fair value of derivative liabilities	760	(4,153)	2,115	(12,692)
Loss on extinguishment of debt	(860)		(2,592)	(1,162)
Other income	2	6	2	89
Total other expense	(1,309)	(6,921)	(3,984)	(19,304)
Net income (loss)	$ 27,858	$ (24,096)	$ 15,516	$ (69,867)
Income (loss) per common share:
Basic	$ 0.65	$ (0.78)	$ 0.37	$ (2.26)
Diluted	$ 0.39	$ (0.78)	$ 0.13	$ (2.26)
Weighted-average number of common shares:
Basic (in shares)	42,900,269	30,941,404	42,035,025	30,904,876
Diluted (in shares)	50,825,633	30,941,404	50,378,186	30,904,876