CONCENTRATION OF RISK - Schedule of Significant Customers and Significant Suppliers Concentration Risk Percentage (Details)	3 Months Ended		12 Months Ended
	May 31, 2018	May 31, 2017	Feb. 28, 2018
Net Sales [Member] | Customer Concentration Risk | Customer A [Member]
Concentration Risk [Line Items]
Concentration percentage	11.60%	11.30%
Accounts Receivable [Member] | Customer Concentration Risk | Customer A [Member]
Concentration Risk [Line Items]
Concentration percentage	15.40%		14.90%
Accounts Receivable [Member] | Customer Concentration Risk | Customer B
Concentration Risk [Line Items]
Concentration percentage	6.90%		13.00%
Inventory Purchases [Member] | Supplier Concentration Risk [Member] | Supplier A [Member]
Concentration Risk [Line Items]
Concentration percentage	28.40%	45.70%
Inventory Purchases [Member] | Supplier Concentration Risk [Member] | Supplier B [Member]
Concentration Risk [Line Items]
Concentration percentage	21.10%	8.90%
Accounts Payable [Member] | Supplier Concentration Risk [Member] | Supplier A [Member]
Concentration Risk [Line Items]
Concentration percentage	32.80%		40.50%
Accounts Payable [Member] | Supplier Concentration Risk [Member] | Supplier B [Member]
Concentration Risk [Line Items]
Concentration percentage	21.50%		16.20%