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Interest Expense on Convertible Notes (Detail) (USD $)
 12 Months Ended
Jan. 31, 2014
Jan. 31, 2013
Schedule Of Debt Instrument Interest Expense [Line Items]    
Amortization of loan fees $ 161,091 $ 83,331
Amortization of debt discount 136,751 670,697
Interest expense, debt 229,725 111,290
Convertible Notes Payable
    
Schedule Of Debt Instrument Interest Expense [Line Items]    
Interest expense 218,403 137,000
Amortization of loan fees 96,454 5,831
Amortization of debt discount 134,601 676,055
Interest expense, debt $ 449,458 $ 818,886