Consolidated Statements of Shareholders' Equity (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2011	$ 4,107,198	$ 1,854	$ 88,612,153	$ (84,506,809)
Balance, shares at Dec. 31, 2011		18,544,355
Issuances of common stock	12,250,500	374	12,250,126
Issuances of common stock, shares	3,739,227	3,739,227
Share-based compensation	984,537	37	984,500
Share-based compensation, shares		363,200
Net Loss	(3,169,560)			(3,169,560)
Balance at Dec. 31, 2012	14,172,675	2,265	101,846,779	(87,676,369)
Balance, shares at Dec. 31, 2012		22,646,782
Exercise of options and warrants	822,969	18	822,951
Exercise of options and warrants, shares	179,983	179,983
Share-based compensation	2,914,904	28	2,914,876
Share-based compensation, shares		282,900
Net Loss	(6,040,611)			(6,040,611)
Balance at Dec. 31, 2013	11,869,937	2,311	105,584,606	(93,716,980)
Balance, shares at Dec. 31, 2013		23,109,665
Issuances of common stock	3,278,250	75	3,278,175
Issuances of common stock, shares		750,000
Exercise of options and warrants	304,788	6	304,782
Exercise of options and warrants, shares	64,800	64,800
Share-based compensation	1,042,917		1,042,917
Share-based compensation, shares
Net Loss	(4,413,722)			(4,413,722)
Balance at Dec. 31, 2014	$ 12,082,170	$ 2,392	$ 110,210,480	$ (98,130,702)
Balance, shares at Dec. 31, 2014		23,924,465