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Earnings Per Share (Tables)
9 Months Ended
Nov. 30, 2018
Earnings Per Share - Denominator For Calculation Of Diluted Earnings Per Share  
Computation of basic and diluted earnings per share
   Nine Months Ended   Three Months Ended 
   November 30,   November 30, 
   2018   2017   2018   2017 
Numerator for basic and diluted earnings per share  $100,813   $264,956   $20,259   $194,442 
                     
Denominator for basic earnings per share – weighted average   15,078,933    14,964,048    15,164,440    14,969,933 
                     
Effects of dilutive securities                    
                     
Stock options for employees, directors and outside consultants   205,138    109,528    221,654    143,456 
                     
Denominator for diluted earnings per share   15,284,071    15,073,576    15,386,094    15,113,389 
                     
Basic earnings per share  $0.01   $0.02   $0.00   $0.01 
Diluted earnings per share  $0.01   $0.02   $0.00   $0.01