Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement [Abstract]
Licensing revenue	$ 22,557	$ 30,927	$ 45,114	$ 61,854
Total revenues	22,557	30,927	45,114	61,854
Operating Expenses:
Research and development	4,019,149	2,200,307	7,238,872	3,591,952
Selling, general and administrative	2,098,347	1,334,852	4,397,794	3,194,256
Total operating expenses	6,117,496	3,535,159	11,636,666	6,786,208
Loss from operations	(6,094,939)	(3,504,232)	(11,591,552)	(6,724,354)
Other Income (Expense):
Interest income	620	1,556	1,703	4,515
Interest expense	(242,078)	(134)	(3,415,859)	(284)
Loss on disposals of assets		(21,272)		(21,272)
Gain on revaluation of derivative warrant liability	2,995,000	369,738	4,675,986	601,281
Other income (expense), net	2,753,542	349,888	1,261,830	584,240
Net loss	$ (3,341,397)	$ (3,154,344)	$ (10,329,722)	$ (6,140,114)
Net loss per common share, basic and diluted	$ (0.51)	$ (0.81)	$ (1.73)	$ (1.58)
Basic and diluted weighted average common shares outstanding	6,594,530	3,916,064	5,987,376	3,895,181