Note 1 - Nature of Operations and Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 25, 2021	Dec. 26, 2020
Land	$ 2,255	$ 1,943
Buildings and leasehold improvements	24,175	18,798
Machinery and equipment	31,853	28,083
Total cost	58,283	48,824
Accumulated depreciation and amortization	(33,347)	(30,592)
Property, Plant and Equipment, Net, Ending Balance	$ 24,936	$ 18,232

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 of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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