Condensed Consolidated Statement of Stockholders' Equity - 6 months ended Jun. 30, 2016 - USD ($)	Common Stock [Member]	Contingently Issuable Share [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2015	$ 54,095	$ 6	$ 259,887,464	$ (234,337)	$ (158,133,926)	$ 101,573,302
Balance (in shares) at Dec. 31, 2015	54,095,110			41,309
Issuance of common stock in connection with exercise of warrants	$ 22		50,249			50,271
Issuance of common stock in connection with exercise of warrants (in shares)	22,041
Issuance of common stock in connection with conversion of notes payable	$ 3		30,598			30,601
Issuance of common stock in connection with conversion of notes payable (in shares)	3,201
Issuance of restricted stock	$ 14		(14)			0
Issuance of restricted stock (in shares)	14,000
Forfeiture of restricted stock	$ (33)		33			0
Forfeiture of restricted stock (in shares)	(33,231)
Issuance of common stock in At the Market offering (net of offering costs of $122,497)	$ 397		3,446,876			3,447,273
Issuance of common stock in At the Market offering (net of offering costs of $122,497) (in shares)	396,811
Compensation in respect of restricted stock granted to employees, directors and consultants			3,347,362			3,347,362
Net loss					(29,747,724)	(29,747,724)
Balance at Jun. 30, 2016	$ 54,498	$ 6	$ 266,762,568	$ (234,337)	$ (187,881,650)	$ 78,701,085
Balance (in shares) at Jun. 30, 2016	54,497,932			41,309