Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Property, Plant and Equipment
Accumulated depreciation and amortization	$ (480,390)	$ (419,915)
Total	344,178	344,617
Depreciation	56,139	52,477	$ 51,003
Land
Property, Plant and Equipment
Property, plant, and equipment, gross	22,851	24,758
Building
Property, Plant and Equipment
Property, plant, and equipment, gross	123,497	108,501
Equipment
Property, Plant and Equipment
Property, plant, and equipment, gross	$ 678,220	$ 631,273

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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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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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.

+ References

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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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