1. Basis of Presentation and Summary of Significant Accounting Policies (Details Narrative) - USD ($)	9 Months Ended
Feb. 28, 2019	Feb. 28, 2018	May 31, 2018	May 31, 2017
Restricted cash and cash equivalents	$ 198,887	$ 21,524	$ 21,559	$ 21,443
Options [Member]
Common shares not included in calculation of diluted net income and loss per share	1,600,000	2,600,000
PDS [Member]
Ownership interest	50.00%

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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