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PROPERTY AND EQUIPMENT, NET (NARRATIVE) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 24, 2016
Jun. 26, 2015
Jun. 24, 2016
Jun. 26, 2015
Dec. 25, 2015
Property, Plant and Equipment [Line Items]          
Capitalized computer software, net $ 19.2   $ 19.2   $ 24.6
Depreciation expense $ 5.0 $ 5.8 $ 10.1 $ 11.2