Major Suppliers (Details) - Supplier concentration risk [Member] - Total Inventory Purchased [Member] - Supplier	9 Months Ended
Aug. 31, 2016	Aug. 31, 2015
Foreign supplier [Member]
Concentration Risk [Line Items]
Portion of overseas products	51.00%	58.00%
Number of supplier	1	1
Taiwan [Member]
Concentration Risk [Line Items]
Portion of overseas products	54.00%
Hong Kong [Member]
Concentration Risk [Line Items]
Portion of overseas products	14.00%
Elsewhere in Asia [Member]
Concentration Risk [Line Items]
Portion of overseas products	31.00%
Overseas outside of Asia [Member]
Concentration Risk [Line Items]
Portion of overseas products	Less than 1

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=64851502&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=73719730&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=64851502&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=73719730&loc=d3e13537-108611

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration