Notes Payable (Unsecured Convertible Note) (Details) (USD $)	3 Months Ended		9 Months Ended			0 Months Ended	12 Months Ended		0 Months Ended	1 Months Ended		0 Months Ended		1 Months Ended	3 Months Ended		9 Months Ended			1 Months Ended	0 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 03, 2008 Class A Warrant [Member]	Dec. 31, 2008 Class A Warrant [Member]	Dec. 31, 2007 Class A Warrant [Member]	Dec. 03, 2008 Class B Warrant [Member]	Oct. 31, 2007 Class B Warrant [Member]	Sep. 25, 2006 Letter of Understanding [Member]	Dec. 24, 2010 Unsecured Convertible Note [Member]	Dec. 23, 2009 Unsecured Convertible Note [Member]	Mar. 31, 2011 Unsecured Convertible Note [Member]	Sep. 30, 2013 Unsecured Convertible Note [Member]	Sep. 30, 2012 Unsecured Convertible Note [Member]	Sep. 30, 2013 Unsecured Convertible Note [Member]	Sep. 30, 2012 Unsecured Convertible Note [Member]	Nov. 02, 2006 Unsecured Convertible Note [Member]	Mar. 31, 2011 Unsecured Convertible Note [Member] Warrants Issued for Convertible Note Restructuring [Member]	Nov. 02, 2006 Unsecured Convertible Note [Member] Class A Warrant [Member]	Nov. 02, 2006 Unsecured Convertible Note [Member] Class B Warrant [Member]	Nov. 02, 2006 Unsecured Convertible Note [Member] Class C Warrant [Member]	Nov. 02, 2006 Unsecured Convertible Note [Member] Class D Warrant [Member]
Convertible notes
Amount of credit facility											$ 1,000,000
Principal issued																			1,000,000
Debt interest rate													8.00%		8.00%		8.00%		5.00%
Debt maturity date												Dec. 31, 2013	Dec. 22, 2010
Conversion price																			$ 1.50
Number of shares of common stock warrants can be exercised for																			5,500,000	221,758	750,000	750,000	2,000,000	2,000,000
Warrant term length																				5 years	1 year	1 year	18 months	24 months
Exercise price of warrants												0.90								0.96	1.60	1.75	2.10	3.00
Warrants exercised							64,400	454,000
Warrants expired			643,094			231,600			750,000
Shares of common stock issued										650,000		150,000
Number of shares issued for interest														135,369
Common stock issued for interest														81,221
Derivative valuation	914,495	4,346,021	914,495	4,346,021	1,191,269										500	224,700	500	224,700
Gain on derivative valuation	365,306	1,051,516	339,700	5,639,996													45,900	75,300
Risk-free interest rate																	0.02%
Expected life																	3 months 18 days
Expected volatility																	91.99%
Dividend yield																	0.00%
Stock trading price															$ 0.07		$ 0.07
Accretion of discount on convertible notes payable			853,321	593,297											83,334	83,334	250,002	250,002
Interest expense															$ 20,000	$ 20,000	$ 60,000	$ 60,000