Additional Balance Sheet Information - Composition of property and equipment (Details) - USD ($) $ in Thousands	Dec. 26, 2019	Dec. 27, 2018
Property, Plant and Equipment, Gross	$ 1,533,832	$ 1,394,912
Less accumulated depreciation and amortization	610,578	554,869
Net property and equipment	923,254	840,043
Land improvements
Property, Plant and Equipment, Gross	152,434	150,122
Buildings and improvements
Property, Plant and Equipment, Gross	761,511	745,886
Leasehold improvements
Property, Plant and Equipment, Gross	164,083	98,885
Furniture, fixtures and equipment
Property, Plant and Equipment, Gross	377,404	314,875
Finance lease right-of-use assets
Property, Plant and Equipment, Gross	74,357	72,631
Construction in progress
Property, Plant and Equipment, Gross	$ 4,043	$ 12,513

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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