CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS EQUITY (Unaudited) (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, 2013	$ (812,351)	$ 38,204	$ 150,506,927	$ (47,183)	$ (151,313,008)	$ 2,709
Beginning Balance, shares at Dec. 31, 2013		38,204,384				2,709,300
Stock-based compensation	1,146,566		1,146,566
Restricted stock awards		364	(364)
Restricted stock awards, shares		363,893
Exercise of stock options	2,559,724	826	2,558,898
Exercise of stock options, shares	826,236	826,236
Exercise of warrants	2,575,001	515	2,574,486
Exercise of warrants, shares		515,000
Cashless exercise of warrants		98	(98)
Cashless exercise of warrants, shares		97,549
Shares issued pursuant to registered direct offering, net	58,181,172	7,500	58,173,672
Shares issued pursuant to registered direct offering, shares		7,500,000
Shares issued pursuant to an at the market offering, net	3,855,701	659	3,855,042
Shares issued pursuant to an at the market offering, shares		658,489
Warrant derivative liability reclassified to equity	1,670,370		1,670,370
Short swing profit return	82,337		82,337
Net loss	(4,644,411)				(4,644,411)
Ending Balance at Mar. 31, 2014	$ 64,614,109	$ 48,166	$ 220,567,836	$ (47,183)	$ (155,957,419)	$ 2,709
Ending Balance, shares at Mar. 31, 2014		48,165,551				2,709,300