For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

CONCENTRATION (Detail Textuals)	12 Months Ended
CONCENTRATION (Detail Textuals)	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Customer
Revenue, Major Customer [Line Items]
Percentage of concentration risk	22.20%	21.80%	20.80%
Supplier
Revenue, Major Customer [Line Items]
Percentage of concentration risk	65.10%	72.00%	77.70%
Vendors
Revenue, Major Customer [Line Items]
Percentage of concentration risk		23.90%	25.20%
Vendors \| One Vendor
Revenue, Major Customer [Line Items]
Percentage of concentration risk	14.70%	13.60%	13.00%
Vendors \| Two Vendor
Revenue, Major Customer [Line Items]
Percentage of concentration risk		10.30%	12.20%