Note 1 - Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 25, 2021	Dec. 26, 2020
Property, plant and equipment	$ 134,956	$ 131,540
Less accumulated depreciation and amortization	(70,999)	(64,624)
Property, plant and equipment, net	63,957	66,916
Land and Land Improvements [Member]
Property, plant and equipment	7,703	8,141
Building and Building Improvements [Member]
Property, plant and equipment	31,711	34,439
Machinery and Equipment [Member]
Property, plant and equipment	$ 95,542	$ 88,960

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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