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PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	Sep. 27, 2017	Dec. 28, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 227,289	$ 173,385
Less: accumulated depreciation	52,600	37,121
Property and equipment, net	174,689	136,264
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	146,939	120,629
Buildings, Deemed Landlord Financing [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	6,555	0
Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	28,139	23,194
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	9,082	7,342
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	10,966	8,710
Construction in progress (includes assets under construction from deemed landlord financing)
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 25,608	$ 13,510

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
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-Section S99
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- Definition

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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+ References

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-Topic 210
-SubTopic 10
-Section S99
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