10. Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 29, 2018	Dec. 30, 2017
Property plant and equipment, gross	$ 6,174	$ 6,093
Less accumulated depreciation and amortization	(5,557)	(5,555)
Property plant and equipment, net	617	538
Buildings and improvements [Member]
Property plant and equipment, gross	$ 67	156
Estimated useful life	18-30 years
Equipment (including computer software
Property plant and equipment, gross	$ 6,049	5,908
Estimated useful life	3-15 years
Projects under construction [Member]
Property plant and equipment, gross	$ 58	$ 29

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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Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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