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Earnings (Loss) Per Share (Tables)
9 Months Ended
Nov. 30, 2017
Earnings Loss Per Share Tables  
Computation of basic and diluted earnings per share
   Nine Months Ended 
November 30,
   Three Months Ended
November 30,
 
   2017   2016   2017   2016 
                 
Denominator for basic earnings per share   14,964,048    14,961,076    14,969,933    14,961,076 
                     
Dilutive effect of stock options   109,528    54,294    143,456    77,718 
                     
Denominator for diluted earnings per share   15,073,576    15,015,370    15,113,389    15,038,794