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Commitments and Contingencies - Additional Infromation (Detail) (USD $)
3 Months Ended 12 Months Ended 0 Months Ended
Jul. 31, 2012
Apr. 30, 2012
Jan. 31, 2013
Jan. 31, 2012
Aug. 16, 2012
Executive Vice President
Oct. 08, 2012
Chief Of Strategy and Business Development
Commitments and Contingencies [Line Items]            
Professional fee payable per month         $ 11,900 $ 10,000
Stock issued during period, shares, issued for services 200,000 300,000 600,000 600,000 700,000 50,000
Equity issuance, per share amount         $ 0.001 $ 0.21
Notice period for termination of agreement           90 days
Deferred compensation arrangement with individual percentage of discount from fair market value           30.00%
Salaries, wages and officers compensation     225,000      
Health insurance expense     $ 1,200