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Earnings (Loss) Per Share (Tables)
6 Months Ended
Aug. 31, 2016
Earnings Loss Per Share Tables  
Computation of basic and diluted earnings per share
   Six Months Ended
August 31,
   Three Months Ended
August 31,
 
   2016   2015   2016   2015 
                 
Denominator for basic earnings (loss) per share   14,961,076    14,938,615    14,961,076    14,944,124 
                     
Dilutive effect of stock options       94,973        101,942 
                     
Denominator for diluted earnings (loss) per share   14,961,076    15,033,588    14,961,076    15,046,066