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Note 3 - Stock-based Compensation (Detail) (USD $)
6 Months Ended
Jul. 31, 2012
Jul. 31, 2011
Share-based Compensation $ 19,800 $ 25,920
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in Shares) 18,000  
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures $ 39,600