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Schedule of Computation of basic and diluted earnings per share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Nov. 30, 2023	Nov. 30, 2022	Nov. 30, 2023	Nov. 30, 2022
Earnings Per Share [Abstract]
Numerator for basic and diluted earnings per share	$ 690,169	$ 104,898	$ 1,284,848	$ 572,657
Denominator for basic earnings per share – weighted average	15,744,543	15,738,180	15,743,224	15,733,284
Effects of dilutive securities
Stock options for employees and directors	32,429	35,190	32,451	31,067
Denominator for diluted earnings per share	15,776,972	15,773,370	15,775,675	15,764,351
Basic earnings per share	$ 0.04	$ 0.01	$ 0.08	$ 0.04
Diluted earnings per share	$ 0.04	$ 0.01	$ 0.08	$ 0.04

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Period Type:	duration

X

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482662/260-10-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 16
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-16

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Period Type:	duration

X

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482662/260-10-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-10

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Period Type:	duration