Securities Purchase Agreement (Details 3) (Series C-2 Warrants [Member], USD $)	Sep. 30, 2012	Dec. 31, 2011
Series C-2 Warrants [Member]
Series C2 warrants using binomial option pricing
Closing price per share of common stock	$ 0.044	$ 0.27
Conversion price per share	$ 0.005	$ 0.60
Volatility	98.20%	88.00%
Risk-free interest rate	0.58%	0.83%
Credit spread	19.80%	20.90%
Remaining expected lives of underlying securities (years)	4 years 9 months 18 days	5 years
Time to exercise (months)	21 months	24 months