Subsequent Events (Detail) (USD $)	3 Months Ended
	Apr. 30, 2013	Jan. 31, 2013
Common Stock, Value, Subscriptions	$ (25,000)
Stock Issued to Investors, Price Per Share (in Dollars per share)	$ 0.02
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)	0.04	0.02
Warrant Term	5 years
Subsequent Event [Member] | Common Stock [Member]
Stock Issued During Period, Value, New Issues	4,000,000
Stock Issued to Investors, Price Per Share (in Dollars per share)	$ 0.02
Subsequent Event [Member]
Common Stock, Value, Subscriptions	$ 80,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)	0.25
Warrant Term	5 years