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PROPERTY AND EQUIPMENT, NET (NARRATIVE) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 26, 2014
Dec. 27, 2013
Dec. 28, 2012
Property, Plant and Equipment [Line Items]      
Capitalized computer software, net $ 30.2us-gaap_CapitalizedComputerSoftwareNet $ 30.6us-gaap_CapitalizedComputerSoftwareNet  
Depreciation expense $ 17.4us-gaap_DepreciationNonproduction $ 15.5us-gaap_DepreciationNonproduction $ 15.8us-gaap_DepreciationNonproduction