Major Suppliers (Details)	3 Months Ended
	Feb. 28, 2021	Feb. 29, 2020
Major Suppliers (Details) [Line Items]
Number of foreign supplier	1	1
Supplier Concentration Risk [Member] | Taiwan [Member] | Total Inventory Purchased [Member]
Major Suppliers (Details) [Line Items]
Percentage of inventory purchased of products	44.00%
Supplier Concentration Risk [Member] | Hong Kong [Member] | Total Inventory Purchased [Member]
Major Suppliers (Details) [Line Items]
Percentage of inventory purchased of products	16.00%
Supplier Concentration Risk [Member] | Elsewhere In Asia [Member] | Total Inventory Purchased [Member]
Major Suppliers (Details) [Line Items]
Percentage of inventory purchased of products	35.00%
Supplier Concentration Risk [Member] | Overseas Outside of Asia [Member] | Total Inventory Purchased [Member]
Major Suppliers (Details) [Line Items]
Percentage of inventory purchased of products	1.00%
Supplier Concentration Risk [Member] | Major Suppliers [Member] | Total Inventory Purchased [Member]
Major Suppliers (Details) [Line Items]
Percentage of inventory purchased of products	34.00%	39.00%