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Supplemental Financial Information (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Property and Equipment
Property and equipment, gross	$ 11,106	$ 13,981
Accumulated depreciation	(10,820)	(13,702)
Property and equipment, net	286	279
Machinery and Equipment
Property and Equipment
Property and equipment, gross	7,867	8,850
Leasehold Improvements
Property and Equipment
Property and equipment, gross	737	833
Furniture and Fixtures
Property and Equipment
Property and equipment, gross	55	420
Computer equipment and software
Property and Equipment
Property and equipment, gross	$ 2,447	$ 3,878
Minimum
Property and Equipment
Estimated Useful Life	3 years
Maximum
Property and Equipment
Estimated Useful Life	7 years

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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