Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Mar. 27, 2021	Dec. 26, 2020
Property, Plant and Equipment
Accumulated depreciation and amortization	$ (489,552)	$ (480,390)
Total	344,914	344,178
Land
Property, Plant and Equipment
Property, plant, and equipment, gross	22,711	22,851
Building
Property, Plant and Equipment
Property, plant, and equipment, gross	124,192	123,497
Equipment
Property, Plant and Equipment
Property, plant, and equipment, gross	$ 687,563	$ 678,220

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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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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