Condensed Consolidated Statement of Stockholders' Equity - 3 months ended Mar. 31, 2016 - USD ($)	Total	Common Stock [Member]	Contingently Issuable Shares [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2015	$ 101,573,302	$ 54,095	$ 6	$ 259,887,464	$ (234,337)	$ (158,133,926)
Balance (in shares) at Dec. 31, 2015		54,095,110			41,309
Issuance of common stock in connection with exercise of warrants	22,163	$ 10		22,153
Issuance of common stock in connection with exercise of warrants (in shares)		9,612
Issuance of restricted stock	0	$ 14		(14)
Issuance of restricted stock (in shares)		14,000
Compensation in respect of restricted stock granted to employees, directors and consultants	1,698,965			1,698,965
Net loss	(13,848,662)	$ 0	0	0	$ 0	(13,848,662)
Balance at Mar. 31, 2016	$ 89,445,768	$ 54,119	$ 6	$ 261,608,568	$ (234,337)	$ (171,982,588)
Balance (in shares) at Mar. 31, 2016		54,118,722			41,309