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Notes to Condensed Consolidated Financial Statements (Details Narrative) - shares	3 Months Ended		9 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2021	Feb. 29, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Weighted Average Number of Shares Outstanding, Basic and Diluted	3,487,599	3,478,914	3,487,801	3,479,033

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- Definition

Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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