Subsequent Events (Detail) (USD $)							0 Months Ended
	Jan. 31, 2013	Aug. 31, 2012	Jun. 19, 2012	Jan. 31, 2012	Jan. 31, 2011	Jan. 31, 2007	Apr. 26, 2013 Investor A [Member]	Apr. 30, 2013 Investor B [Member]	Apr. 30, 2013 Investor A and B [Member]	Apr. 30, 2013 One-half Warrant Exercisable [Member]
Proceeds from Issuance of Private Placement (in Dollars)							$ 10,000	$ 25,000
Shares, Issued			2,000,000				500,000	1,250,000
Share Price (in Dollars per share)	$ 0.05				$ 0.06	$ 0.10			$ 0.02
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)	0.02	0.02	0.05	0.12	0.12	0.04				0.25