Warrant Activity (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013
Class of Warrant or Right [Line Items]
Number of Warrants, Outstanding at December 31, 2012	18,190,906
Granted, Number of Warrants	1,140,000
Exercised, Number of Warrants	0
Expired or cancelled, Number of Warrants	(7,500)
Number of Warrants, Outstanding and exercisable at September 30, 2013	19,323,406
Weighted Average Exercise Price, Outstanding at December 31, 2012	$ 0.225
Granted, Weighted Average Exercise Price	$ 0.185
Exercised, Weighted Average Exercise Price	$ 0
Expired or cancelled, Weighted Average Exercise Price	$ 60.00
Weighted Average Exercise Price, Outstanding and exercisable at September 30, 2013	$ 0.200
Remaining Contractual Term, Outstanding at December 31, 2012	73 months
Granted, Remaining Contractual Term	47 months
Exercised, Remaining Contractual Term	0 months
Expired or cancelled, Remaining Contractual Term	0 months
Remaining Contractual Term, Outstanding and exercisable at September 30, 2013	63 months
Aggregate Intrinsic Value, Outstanding at December 31, 2012	$ 0
Granted, Aggregate Intrinsic Value	0
Exercised, Aggregate Intrinsic Value	0
Expired or cancelled, Aggregate Intrinsic Value	0
Aggregate Intrinsic Value, Outstanding and exercisable at September 30, 2013	$ 300,000