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Total Unrecognized Compensation Costs Related to Non-Vested Stock-Based Compensation Arrangements (Detail) (USD $)
12 Months Ended
Jan. 31, 2014
Employee Service Share -Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized [Line Items]  
Unrecognized compensation cost $ 282,176
Weighted Average Remaining Life (Years) 1 year 6 months
Common stock options
 
Employee Service Share -Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized [Line Items]  
Unrecognized compensation cost 118,194
Weighted Average Remaining Life (Years) 9 months 18 days
ACO Plan restricted stock
 
Employee Service Share -Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized [Line Items]  
Unrecognized compensation cost $ 15,736
Weighted Average Remaining Life (Years) 1 year