PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	Mar. 25, 2020	Dec. 25, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 460,142	$ 436,648
Less: accumulated depreciation	131,103	121,786
Property and equipment, net	329,039	314,862
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	312,524	302,204
Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	56,482	54,404
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	18,497	18,082
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	25,091	24,226
Financing equipment lease assets [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	8,079	7,442
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 39,469	$ 30,290

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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