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Non-controlling Interest (Detail) (USD $)
9 Months Ended
Oct. 31, 2013
Oct. 31, 2012
Noncontrolling Interest [Line Items]    
Balance as of January 31, 2013 $ (36,503)  
Stock-based compensation 9,475  
Distributions to non-controlling interest shareholder (240,000) (370,000)
Balance as of October 31, 2013 $ (267,028)