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COMMITMENTS AND CONTINGENCIES Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 01, 2017
Dec. 25, 2015
Dec. 26, 2014
Long-term Purchase Commitment [Line Items]      
Operating leases, maximum period afforded to each party to cancel lease agreements 90 days    
Operating leases, rent expense $ 26.5 $ 23.1 $ 23.0
Purchase obligation 11.6    
Purchase obligation, due in next twelve months $ 7.6