Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 26, 2020	Dec. 28, 2019
Property and equipment, gross	$ 3,978	$ 3,331
Accumulated depreciation and amortization	(2,715)	(2,298)
Property and equipment, net	1,263	1,033
Computer Equipment and Software
Property and equipment, gross	1,170	989
Shop Equipment
Property and equipment, gross	1,683	1,301
Furniture and Fixtures
Property and equipment, gross	193	190
Leasehold Improvements
Property and equipment, gross	845	623
Autos and Trucks
Property and equipment, gross	87	87
Construction in Progress
Property and equipment, gross	$ 0	$ 141

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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