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Summary of Restricted Stock Award (Detail) (USD $)
12 Months Ended
Jan. 31, 2013
Schedule Of Share Based Compensation Restricted Stock Units Award Activity [Line Items]  
Balance, January 31, 2012, Shares 0
Granted, Shares 3,690,000
Released, Shares 0
Balance, January 31, 2013, Shares 3,690,000
Balance, January 31, 2012, Weighted Average Remaining Life (Years) 0 years
Granted, Weighted Average Remaining Life (Years) 1 year 10 months 24 days
Balance, January 31, 2013, Weighted Average Remaining Life (Years) 1 year 10 months 24 days
Balance, January 31, 2012, Aggregate Intrinsic Value $ 0
Granted, Aggregate Intrinsic Value 36,900
Balance, January 31, 2013, Aggregate Intrinsic Value $ 36,900
Balance, January 31, 2012, Weighted Average Fair Value $ 0
Granted, Weighted Average Fair Value $ 0.01
Balance, January 31, 2013, Weighted Average Fair Value $ 0.01