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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - USD ($) | May 31, 2022 | May 31, 2021
--- | --- | ---
Investment securities | $ 28,609,000 | $ 580,000
Money Market Fund |  |
Investment securities | 28,609,000 | 580,000
Level 1 |  |
Investment securities | 28,609,000 | 580,000
Level 1 | Money Market Fund |  |
Investment securities | 28,609,000 | 580,000
Level 2 |  |
Investment securities | 0 | 0
Level 2 | Money Market Fund |  |
Investment securities | 0 | 0
Level 3 |  |
Investment securities | 0 | 0
Level 3 | Money Market Fund |  |
Investment securities | $ 0 | $ 0

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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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