Consolidated Statements of Changes in Stockholders' Equity (USD $)	Preferred Stock	Common Stock	Additional Paid-in Capital	Common Stock Subscribed	Accumulated Deficit	Total
Beginning balance, Amount at Dec. 31, 2009	$ 51	$ 270,459	$ 74,155,716		$ (67,393,620)	$ 7,032,606
Beginning balance, Shares at Dec. 31, 2009	5,059	27,045,792
Exercise of warrants, Shares		35,714
Exercise of warrants, Amount		357	(357)
Share-based payments - restricted stock, net of forfeitures, Shares		363,000
Share-based payments - restricted stock, net of forfeitures, Amount		3,630	389,619			393,249
Share-based payments - options, net of forfeitures			164,810			164,810
Fair value of warrants issued for services			616,634			616,634
Fair value of options issued for services			59,471			59,471
Common Stock issued to charitable organization, Shares		60,000
Common Stock issued to charitable organization , Amount		600	112,800			113,400
Issuance of Common Stock, net of cash issuance costs of $188,333 and non-cash costs of $468,741, Shares		3,356,739
Issuance of Common Stock, net of cash issuance costs of $188,333 and non-cash costs of $468,741, Amount		33,568	3,484,485			3,518,053
Fair value of fully vested Common Stock issued for services, Shares		265,000
Fair value of fully vested Common Stock issued for services, Amount		2,650	462,850			465,500
Fair value of derivative warrant liabilities reclassified to additional paid-in capital			200,357			200,357
Dividends on Series B Preferred Stock, Shares	13
Dividends on Series B Preferred Stock, Amount
Common Stock subscription, 285,000 shares				285,000		285,000
Net Loss					(4,146,796)	(4,146,796)
Ending balance, Amount at Dec. 31, 2010	51	311,264	79,646,385	285,000	(71,540,416)	8,702,284
Ending balance, Shares at Dec. 31, 2010	5,072	31,126,245
Exercise of warrants, Shares	3,225	2,303,456
Exercise of warrants, Amount	32	23,035	4,896,278			4,919,345
Series B Preferred Stock redeemed for Series C Preferred Stock in warrant exercise, Shares	1,661
Series B Preferred Stock redeemed for Series C Preferred Stock in warrant exercise, Amount	17		(17)
Share-based payments - restricted stock, net of forfeitures, Shares		190,000
Share-based payments - restricted stock, net of forfeitures, Amount		1,900	(1,900)
Share-based payments - options, net of forfeitures			836,866			836,866
Fair value of fully vested Common Stock issued for services, Shares		138,000
Fair value of fully vested Common Stock issued for services, Amount		1,380	447,560			448,940
Fair value of derivative warrant liabilities reclassified to additional paid-in capital			2,272,597			2,272,597
Common Stock subscription, 285,000 shares				6,667		6,667
Issuance of Common Stock and warrants, net of cash issuance costs of $109,636 and non-cash costs of $41,363, Shares		3,550,449
Issuance of Common Stock and warrants, net of cash issuance costs of $109,636 and non-cash costs of $41,363, Amount		35,505	6,403,984	(285,000)		6,154,489
Issuance of Series D Preferred Stock and warrants, net of cash issuance costs of $21,299, Shares	3,506,000
Issuance of Series D Preferred Stock and warrants, net of cash issuance costs of $21,299, Amount	35,060		3,449,642			3,484,702
Series B Preferred Stock dividend paid-in-kind, Shares	16
Series B Preferred Stock dividend paid-in-kind, Amount
Common Stock issued in Series D Preferred Stock conversion, Shares	(500,000)	500,000
Common Stock issued in Series D Preferred Stock conversion, Amount	(5,000)	5,000
Common Stock and warrants issued to settle short-term note, Shares		30,000
Common Stock and warrants issued to settle short-term note, Amount		300	35,200			35,500
Exercise of stock options, Shares		705,844
Exercise of stock options, Amount		7,058	129,732			136,790
Net Loss					(10,029,591)	(10,029,591)
Ending balance, Amount at Dec. 31, 2011	$ 30,160	$ 385,442	$ 98,116,327	$ 6,667	$ (81,570,007)	$ 16,968,589
Ending balance, Shares at Dec. 31, 2011	3,015,974	38,543,994