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Major Customers, Suppliers and Products (Schedule Of Supplier Concentration of Risk) (Details) - Supplier Concentration Risk [Member] - Cost of Goods, Total [Member]	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Supplier A
Concentration Risk
Concentration Risk, Percentage	37.00%	13.00%
Supplier B
Concentration Risk
Concentration Risk, Percentage	17.00%
Supplier C
Concentration Risk
Concentration Risk, Percentage		17.00%
Supplier D
Concentration Risk
Concentration Risk, Percentage		15.00%

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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