Condensed Consolidated Statement of Stockholders Equity (USD $)	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Accumulated Deficit [Member]	Series A Preferred Stock [Member]
Beginning Balance at Dec. 31, 2012	$ 49,777,213	$ 37,499	$ 143,703,583	$ (47,183)	$ (93,919,395)	$ 2,709
Beginning Balance, Shares at Dec. 31, 2012		37,497,703				2,709,300
Stock-based compensation	2,487,730		2,487,730
Restricted stock awards		80	(80)
Restricted stock awards, Shares		80,498
Shares issued to Arcion in acquisition of research and development license	2,072,136	500	2,071,636
Shares issued to Arcion in acquisition of research and development license, Shares		500,516
Exercise of stock options	347,434	103	347,331
Exercise of stock options, Shares	102,827	102,827
Warrants issued to MidCap	986,362		986,362
Net loss	(44,624,098)				(44,624,098)
Ending Balance at Sep. 30, 2013	$ 11,046,777	$ 38,182	$ 149,596,562	$ (47,183)	$ (138,543,493)	$ 2,709
Ending Balance, Shares at Sep. 30, 2013		38,181,544				2,709,300