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DEFINED CONTRIBUTION PLANS (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 26, 2014
Dec. 27, 2013
Dec. 28, 2012
Compensation and Retirement Disclosure [Abstract]      
Deferred compensation liability, current and noncurrent $ 10.1us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent $ 6.6us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent  
Deferred Compensation Expense $ 2.0us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense $ 1.4us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense $ 1.2us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense