CONCENTRATION - Textuals (Details)	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Customer One | Accounts Receivable [Member]
Revenue, Major Customer [Line Items]
Percentage of concentration risk	27.50%	22.20%
Customer Two | Accounts Receivable [Member]
Revenue, Major Customer [Line Items]
Percentage of concentration risk	16.50%	17.20%
Customer | Sales Revenue, Net [Member]
Revenue, Major Customer [Line Items]
Percentage of concentration risk		22.20%	21.80%
Customer | Customer One | Sales Revenue, Net [Member]
Revenue, Major Customer [Line Items]
Percentage of concentration risk	24.80%
Customer | Customer Two | Sales Revenue, Net [Member]
Revenue, Major Customer [Line Items]
Percentage of concentration risk	12.40%
Supplier
Revenue, Major Customer [Line Items]
Percentage of concentration risk	61.50%	65.10%	72.00%
Vendors
Revenue, Major Customer [Line Items]
Percentage of concentration risk			23.90%
Vendors | One Vendor
Revenue, Major Customer [Line Items]
Percentage of concentration risk	14.40%	14.70%	13.60%
Vendors | Two Vendor
Revenue, Major Customer [Line Items]
Percentage of concentration risk			10.30%