Earnings Per Share - The denominator for the calculation of diluted earnings per share (Details) - USD ($)	12 Months Ended
	Feb. 28, 2021	Feb. 29, 2020
Earnings Per Share - Denominator For Calculation Of Diluted Earnings Per Share
Numerator for basic and diluted earnings per share	$ 1,120,642	$ 1,107,442
Denominator for basic earnings per share - weighted average	15,428,411	15,302,367
Effects of dilutive securities:
Stock options for employees, directors and outside consultants	243,842	56,721
Denominator for diluted earnings per share	15,672,253	15,359,088
Basic Earnings Per Share - Weighted Average	$ 0.07	$ 0.07
Diluted Earnings Per Share - Weighted Average	$ 0.07	$ 0.07