Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 29, 2018	Dec. 30, 2017
Property and equipment, gross	$ 7,596	$ 7,762
Accumulated depreciation and amortization	(6,919)	(6,735)
Property and equipment, net	677	1,027
Computer Equipment and Software [Member]
Property and equipment, gross	3,767	3,984
Shop Equipment [Member]
Property and equipment, gross	1,270	1,214
Furniture and Fixtures [Member]
Property and equipment, gross	290	290
Building and Leasehold Improvements [Member]
Property and equipment, gross	2,182	2,167
Autos and Trucks [Member]
Property and equipment, gross	$ 87	$ 107

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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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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