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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13531-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13537-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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

Major Suppliers (Details) - Supplier Concentration Risk [Member] - Total Inventory Purchased [Member]	12 Months Ended
	Nov. 30, 2018	Nov. 30, 2017
Taiwan [Member]
Major Suppliers (Textual)
Percentage of inventory purchased of products	49.00%
Hong Kong [Member]
Major Suppliers (Textual)
Percentage of inventory purchased of products	18.00%
Asia [Member]
Major Suppliers (Textual)
Percentage of inventory purchased of products	30.00%
Overseas Outside of Asia [Member]
Major Suppliers (Textual)
Portion of overseas products, description	Less than 1%.
Foreign Supplier [Member]
Major Suppliers (Textual)
Percentage of inventory purchased of products	46.00%	49.00%