PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	Jun. 26, 2019	Dec. 26, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 387,267	$ 347,301
Less: accumulated depreciation	101,375	85,447
Property and equipment, net	285,892	261,854
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	259,499	228,453
Landlord funded assets
Property, Plant and Equipment [Line Items]
Property and equipment, gross	0	15,595
Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	47,388	40,716
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	15,775	14,055
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	21,384	19,008
Financing equipment lease assets [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	5,921	0
Construction in progress(1)
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 37,300	$ 29,474

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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