Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Consolidated Statements of Operations
Net product sales	$ 1,130		$ 1,283
Licenses Revenue	127	91	401	391
Total revenue	1,257	91	1,684	391
Costs and expenses
Cost of product sales	33		37
Research and development	3,779	8,306	11,844	18,367
Selling, general and administrative	14,620	4,075	40,366	11,450
Total costs and expenses	18,432	12,381	52,247	29,817
Operating loss	(17,175)	(12,290)	(50,563)	(29,426)
Other income (expense):
Interest income	96	39	203	91
Interest expense	(2,870)	(880)	(5,742)	(2,771)
Changes in fair value of derivative liabilities	(4,153)	(294)	(12,692)	(766)
Loss on extinguishment of debt			(1,162)
Other income (expense)	6	(57)	89	101
Total other income (expense)	(6,921)	(1,192)	(19,304)	(3,345)
Net loss	(24,096)	(13,482)	(69,867)	(32,771)
Cumulative dividends on Series A convertible preferred stock				(1,143)
Net loss attributable to common stockholders	$ (24,096)	$ (13,482)	$ (69,867)	$ (33,914)
Loss per common share:
Basic and diluted (in dollars per share)	$ (0.78)	$ (0.55)	$ (2.26)	$ (2.36)
Weighted-average number of common shares:
Basic and diluted (in shares)	30,941,404	24,464,281	30,904,876	14,356,546