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Schedule of Computation of basic and diluted earnings per share (Details) - USD ($)
3 Months Ended 6 Months Ended
Aug. 31, 2023
Aug. 31, 2022
Aug. 31, 2023
Aug. 31, 2022
Earnings Per Share [Abstract]        
Numerator for basic and diluted earnings per share $ 541,273 $ 162,123 $ 594,679 $ 467,759
Denominator for basic earnings per share – weighted average 15,743,069 15,732,550 15,742,571 15,730,862
Effects of dilutive securities        
Stock options for employees, directors and outside consultants 30,596 42,606 32,461 39,682
Denominator for diluted earnings per share 15,773,665 15,775,156 15,775,032 15,770,544
Basic Earnings Per Share $ 0.03 $ 0.01 $ 0.04 $ 0.03
Diluted Earnings Per Share $ 0.03 $ 0.01 $ 0.04 $ 0.03