Common Stock Purchase Warrants (Details 1) (Warrant [Member], USD $)			9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2012 Warrants priced between $0.50 and $0.64 [Member]	Sep. 30, 2012 Warrants priced between $0.90 and $3.78 [Member]
Schedule of warrants outstanding by Price Range
Exercise price, lower range limit			$ 0.50	$ 0.90
Exercise price, upper range limit			$ 0.64	$ 3.78
Balance outstanding, September 30, 2012, Number of Warrants	28,994,025	31,649,835	18,283,513	10,710,512
Balance outstanding, September 30, 2012, Weighted Average Exercise Price	$ 0.96	$ 0.97	$ 0.59	$ 1.59
Balance outstanding, September 30, 2012, Weighted Average Remaining Contractual Life (in years)	2 years 6 months	2 years 9 months 18 days	2 years 8 months 12 days	2 years 1 month 6 days