Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Consolidated Statements of Operations
Net product sales	$ 154		$ 154
Licenses Revenue	127	91	274	299
Total revenue	281	91	428	299
Costs and expenses
Cost of product sales	4		4
Research and development	3,542	4,703	8,065	10,061
Selling, general and administrative	12,214	4,645	25,747	7,374
Total costs and expenses	15,760	9,348	33,816	17,435
Operating loss	(15,479)	(9,257)	(33,388)	(17,136)
Other income (expense):
Interest income	55	32	107	52
Interest expense	(2,144)	(929)	(2,872)	(1,891)
Changes in fair value of derivative liabilities	(8,619)	(144)	(8,540)	(472)
Loss on extinguishment of debt	(1,162)		(1,162)
Other income (expense)	(8)	285	84	159
Total other income (expense)	(11,878)	(756)	(12,383)	(2,152)
Net loss	(27,357)	(10,013)	(45,771)	(19,288)
Cumulative dividends on Series A convertible preferred stock		(286)		(1,143)
Net loss attributable to common stockholders	$ (27,357)	$ (10,299)	$ (45,771)	$ (20,431)
Loss per common share:
Basic and diluted (in dollars per share)	$ (0.89)	$ (0.61)	$ (1.48)	$ (2.21)
Weighted-average number of common shares:
Basic and diluted (in shares)	30,897,075	16,817,841	30,886,309	9,247,142