BORROWING AND FINANCING ARRANGEMENTS (Details Narrative) - USD ($)	9 Months Ended
Feb. 28, 2022	Feb. 28, 2021
Borrowing under line of credit	$ 1,400,000	$ 1,400,000
Second Amendment To Loan And Security Agreement
Line of Credit, maximum borrowing	$ 10,000,000
Variable interest rate	prime rate plus an additional percentage up to 1.0%, which additional percentage depends on the Company’s adjusted quick ratio, and (b) 3.25%, reduces the interest rate for purchase order advances under the line to the greater of (a) prime rate plus an additional percentage up to 1.5%, which additional percentage depends on the Company’s adjusted quick ratio, and (b) 3.75%
Revolving line maturity date	Jan. 13, 2023
Second Amendment To Loan And Security Agreement \| Customer Purchase Order
Line of Credit, maximum borrowing	$ 3,000,000
Original Loan and Security Agreement
Line of Credit, maximum borrowing	$ 4,000,000.0
Variable interest rate	the prime rate plus an additional percentage of up to 1%, which additional percentage depends on the Company’s adjusted quick ratio, and (b) 4.75%.
Borrowing under line of credit	$ 0
Balance available to borrow under the line of credit	$ 2,522,000
First Amendment to Loan and Security Agreement
Revolving line maturity date	Jan. 13, 2022

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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Date the credit facility terminates, in YYYY-MM-DD format.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
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