ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($)	12 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2021
Allowance for doubtful accounts	$ 24,000	$ 0	$ 0
Provision for inventory reserves	$ 569,000	$ 1,031,000	176,000
Gain related to completed liquidation of ATS-Japan			$ 2,401,000
Accounts Receivable | North America
Concentration risk	17.00%	20.00%
Accounts Receivable | Asia
Concentration risk	83.00%	80.00%
Accounts Receivable | Customer One
Concentration risk	82.00%	68.00%
Accounts Receivable | Customer Two
Concentration risk	17.00%	18.00%
Accounts Receivable | Customer Three
Concentration risk		11.00%
Net Sales | Customer One
Concentration risk	79.00%	82.00%
Net Sales | Customer Two
Concentration risk	10.00%