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Earnings Per Share (Tables)
3 Months Ended
May 31, 2013
Earnings Per Share Tables  
Computation of basic and diluted earnings per share
   Three Months Ended May 31, 
   2013   2012 
         
Denominator for basic earnings per share   14,503,010    14,459,579 
           
Dilutive effect of stock options   56,431    110,935 
           
Denominator for diluted earnings per share   14,559,441    14,570,514