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Earnings Per Share - The denominator for the calculation of diluted earnings per share (Details) - USD ($)	3 Months Ended
	May 31, 2019	May 31, 2018
Earnings Per Share - Denominator For Calculation Of Diluted Earnings Per Share
Numerator for basic and diluted earnings per share	$ 25,213	$ 21,430
Denominator for basic earnings per share - weighted average	15,268,071	14,987,613
Effects of dilutive securities:
Stock options for employees, directors and outside consultants	89,224	100,899
Denominator for diluted earnings per share	15,357,295	15,088,512
Basic Earnings Per Share	$ 0.00	$ 0.00
Diluted Earnings Per Share	$ 0.00	$ 0.00

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