Shareholders' Equity, Redeemable Convertible Preferred Stock, Options and Warrants (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Equity [Abstract]
Warrants outstanding, beginning of period	33,556,783	56,552,970
Warrants, granted	$ 4,502,520	$ 9,054,174
Warrants, exercised		$ (15,437,501)
Warrants, forfeited		(16,612,860)
Warrants outstanding, end of period	38,059,303	33,556,783
Weighted average exercise price of warrants outstanding, beginning of period	$ 0.25	$ 0.32
Weighted average exercise price, granted	$ 0.30	$ 0.22
Weighted average exercise price, exercised		$ 0.10
Weighted average exercise price, forfeited		$ 0.36
Weighted average exercise price of warrants outstanding, end of period	$ 0.26	$ 0.25