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Accounts Payable and Accrued Liabilities (Detail) (USD $)
Jul. 31, 2013
Jan. 31, 2013
Account Payable And Accrued Liabilities [Line Items]    
Accounts payable $ 417,171 $ 394,915
Accrued compensation 496,052 500,023
Income taxes payable 287 1,087
Accrued interest 44,338 9,310
Accrued professional fees 36,345 45,316
Accounts payable and accrued liabilities $ 994,193 $ 950,651