13. SEGMENT INFORMATION (Details Narrative)	3 Months Ended		9 Months Ended
	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2019	Feb. 28, 2018
Five Largest Customers
Customers accounted for 10% or more of total revenues	90.00%	93.00%	81.00%	93.00%
Customer A
Customers accounted for 10% or more of total revenues	27.00%	31.00%	31.00%	35.00%
Customer B
Customers accounted for 10% or more of total revenues	25.00%	25.00%	18.00%	34.00%
Customer C
Customers accounted for 10% or more of total revenues	22.00%	16.00%	16.00%	13.00%
Customer D
Customers accounted for 10% or more of total revenues	13.00%	12.00%	12.00%