Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Sep. 25, 2021	Dec. 26, 2020
Property, Plant and Equipment
Accumulated depreciation and amortization	$ (513,664)	$ (480,390)
Total	364,329	344,178
Land
Property, Plant and Equipment
Property, plant, and equipment, gross	22,887	22,851
Building
Property, Plant and Equipment
Property, plant, and equipment, gross	129,135	123,497
Equipment
Property, Plant and Equipment
Property, plant, and equipment, gross	$ 725,971	$ 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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