Notes Payable - Shareholder (Detail) (USD $)	9 Months Ended		141 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2012	Aug. 31, 2012	Jun. 19, 2012	Jan. 31, 2012	Oct. 27, 2011	Aug. 31, 2011	Jan. 31, 2010	Jan. 31, 2009	Jan. 31, 2005
Notes Payable, Related Parties, Current	$ 191,000		$ 191,000			$ 340,000	$ 30,000	$ 150,000	$ 50,000	$ 80,000	$ 30,000
Debt Instrument, Interest Rate, Effective Percentage	10.00%		10.00%
Repayments of Notes Payable	149,000	0	1,150,568
Bridge Loan				$ 300,000
Debt Instrument, Interest Rate, Stated Percentage				15.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)				6,814,000	1,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)				0.02	0.05
Default Interest Rate				45.00%