1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2018	May 31, 2017	May 31, 2016
System software development costs were capitalized or amortized	$ 0	$ 0	$ 0
Asia | Accounts Receivable
Concentration risk	45.00%	55.00%
Europe | Accounts Receivable
Concentration risk	0.00%	0.00%
North America | Accounts Receivable
Concentration risk	55.00%	45.00%
Customer One | Accounts Receivable
Concentration risk	38.00%	47.00%
Customer One | Net Sales
Concentration risk	34.00%	45.00%
Customer Two | Accounts Receivable
Concentration risk	32.00%	40.00%
Customer Two | Net Sales
Concentration risk	26.00%	19.00%
Customer Three | Accounts Receivable
Concentration risk	11.00%	11.00%
Customer Three | Net Sales
Concentration risk	13.00%	17.00%
Customer Four | Net Sales
Concentration risk		10.00%