Equity Instruments (Details 6) (Stock Options [Member], USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary of common stock options outstanding and exercisable
Options outstanding	6,618,000	8,795,400	2,611,100
Exercise Price Range Lower Limit	$ 0.25
Exercise Price Range Upper Limit	$ 2.16
Weighted-Average Exercise Price	$ 0.32	$ 0.33	$ 0.50
Weighted-Average Remaining Contractual Life	8 years 3 months 15 days	7 years 8 months 27 days	8 years 1 month 2 days
Options Exercisable	6,261,334
Weighted-Average Exercise Price of Exercisable Options	$ 0.33
Range One [Member]
Summary of common stock options outstanding and exercisable
Options outstanding	5,200,000
Exercise Price Range Lower Limit	$ 0.25
Weighted-Average Exercise Price	$ 0.25
Weighted-Average Remaining Contractual Life	8 years 11 months 12 days
Options Exercisable	4,883,334
Weighted-Average Exercise Price of Exercisable Options	$ 0.25
Range Two [Member]
Summary of common stock options outstanding and exercisable
Options outstanding	1,418,000
Exercise Price Range Lower Limit	$ 0.28
Exercise Price Range Upper Limit	$ 2.16
Weighted-Average Exercise Price	$ 0.60
Weighted-Average Remaining Contractual Life	5 years 10 months 17 days
Options Exercisable	1,378,000
Weighted-Average Exercise Price of Exercisable Options	$ 0.60