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EMPLOYEE BENEFIT PLANS (Details Narrative) - USD ($) | 12 Months Ended
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May 31, 2022 | May 31, 2021 | May 31, 2020
EMPLOYEE BENEFIT PLANS (Details Narrative) |  |  |
Contributions to ESOP | $ 250,000 | $ 60,000 | $ 60,000
Shares contributed to the ESOP during fiscal year (in thousands) | 26,666 | 36,000 | 34,000
Defined contribution plan, description | The stock bonus plan was converted to an employee stock ownership plan (“ESOP”) to enable the Plan to better comply with changes in the law regarding Company stock. Individuals’ account balances vest at a rate of 20% per year commencing upon completion of two years of service. |  |

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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Description of defined contribution pension and other postretirement plans. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition This item represents the number of shares provided to the Employee Stock Ownership Plan (ESOP) during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929 + Details
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