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.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	Dec. 30, 2020	Dec. 25, 2019	Dec. 26, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 502,697	$ 436,648
Less: accumulated depreciation	(166,156)	(121,786)
Property and equipment, net	336,541	314,862
Depreciation	48,801	40,392	$ 29,000
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	342,724	302,204
Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	60,064	54,404
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	20,178	18,082
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	30,477	24,226
Financing equipment lease right-of-use assets
Property, Plant and Equipment [Line Items]
Property and equipment, gross	9,622	7,442
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 39,632	$ 30,290