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Estimated Intangible Asset Amortization Expense (Detail) (USD $)
Jan. 31, 2014
Jan. 31, 2013
Finite-Lived Intangible Assets [Line Items]    
2015 $ 16,800  
2016 16,800  
2017 16,542  
2018 9,918  
2019 2,367  
Thereafter 0  
Finite-Lived Intangible Assets, Net, Total $ 62,427 $ 0