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Note 10 - Stock Compensation (Detail) - Transactions Related to Restriced Stock Units Granted Under These Plans (USD $)
12 Months Ended
Jan. 31, 2013
Jan. 31, 2012
Jan. 31, 2011
Balance, January 31 304,326 293,651 98,928
Balance, January 31 (in Dollars per share) $ 0.20 $ 0.37 $ 2.56
Common Stock issued (246,845) (44,325)  
Common Stock issued (in Dollars per share) $ 0.28 $ 2.40  
Restricted Stock Units (RSUs) [Member]
     
RSU’s granted 300,000 325,000  
RSU’s granted (in Dollars per share) $ 0.16 $ 0.31  
RSU’s canceled or expired (42,480) (85,952)  
RSU’s canceled or expired (in Dollars per share) $ 0.24 $ 1.63