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GEOGRAPHIC INFORMATION (Tables) | 12 Months Ended
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May 31, 2020
Geographic Information Disclosure [Abstract] |
Revenue from External Customers by Geographic Areas [Table Text Block] |
Years ended May 31, |  | 2020 |  | 2019
Net sales: |  |  |  |  |  |
Europe |  | $ | 2,434,000 |  | $ | 1,694,000
United States |  |  | 445,000 |  |  | 523,000
Asia |  |  | 1,867,000 |  |  | 2,514,000
South America |  |  | 1,615,000 |  |  | 256,000
Middle East |  |  | 314,000 |  |  | 214,000
Other foreign |  |  | 18,000 |  |  | --
Total net sales |  | $ | 6,693,000 |  | $ | 5,201,000

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- Definition Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 + Details
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