Subsequent Event (Details) (USD $)	0 Months Ended						12 Months Ended				0 Months Ended					0 Months Ended			0 Months Ended
	Feb. 22, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Common Stock	Dec. 31, 2011 Common Stock	Dec. 31, 2010 Common Stock	Dec. 31, 2012 2011 and 2012 Warrants	Feb. 22, 2013 Convertible Notes	Jan. 16, 2013 Convertible Notes	Feb. 22, 2011 Convertible Notes	Feb. 22, 2013 Subsequent Event 2013 Investors	Feb. 22, 2013 Subsequent Event 2013 Investors Common Stock	Jan. 16, 2013 Subsequent Event 2013 Warrants	Feb. 22, 2013 Subsequent Event 2013 Warrants 2013 Investors	Feb. 22, 2013 Subsequent Event 2013 Warrants 2013 Investors Maximum	Feb. 22, 2013 Subsequent Event 2011 and 2012 Warrants	Jan. 16, 2013 Subsequent Event Convertible Notes	Feb. 22, 2013 Subsequent Event Convertible Notes	Feb. 22, 2013 Subsequent Event Forecast 2013 Investors Common Stock
Subsequent Event
Interest rate (as a percent)								5.00%		5.00%							5.00%
Issuance of secured convertible debt																	$ 250,000
Term of warrants													5 years	5 years
Warrants issued for purchase of shares of common stock (in shares)													2,500,000	26,933,333
Number of shares exercisable under warrants issued							50,000,000									81,578,946
Exercise price of warrants (in dollars per share)													$ 0.15	$ 0.20		$ 0.098
Shares of common stock sold		32,434,000	30,351,000	32,434,000	30,351,000	30,351,000						26,933,333
Gross proceeds from sale of common stock	4,040,000											4,040,000
Net proceeds from sale of common stock																			3,500,000
Common stock, share price (in dollars per share)												$ 0.15
Common stock called by warrants (as a percent)														100.00%
Period for presenting effective registration statement for avoiding cashless exercise of warrants														180 days
Limitation of beneficial ownership of common stock for exercise of warrants (as a percent)															4.99%
Discretionary increase in limitation of beneficial ownership of common stock for exercise of warrants (as a percent)															9.99%
Notice period for discretionary increase in limitation of beneficial ownership of common stock for exercise of warrants														61 days
Common stock called by warrants as a part of placement agent service fee (in shares)														1,885,333
Portion of shares of common stock and warrants available for same per share purchase price (as a percent)											0.5
Aggregate principal balance									5,250,000	3,208,000
Amount of term debenture										4,000,000
VWAP price (in dollars per share)																$ 0.155
Number of securities called by outstanding warrants returned to the Company for forfeiture (in shares)																12,500,000
Amount of debentures subject to relinquishment of right to purchase																		$ 750,000
Issuance of additional shares of common stock, on modification, without payment of additional cash consideration																30,000,000