Common Stock Purchase Warrants (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2013
Warrants priced between $0.50 and $0.64 [Member]
Common Stock Purchase Warrants (Textual) [Abstract]
Exercise price, lower range limit	$ 0.50
Exercise price, upper range limit	$ 0.64
Warrants priced between $0.90 and $3.78 [Member]
Common Stock Purchase Warrants (Textual) [Abstract]
Exercise price, lower range limit	$ 0.90
Exercise price, upper range limit	$ 3.78