FAIR VALUE MEASUREMENTS (Schedule of Fair Value and Carrying Amount of Debt Obligations) (Details) - USD ($) $ in Thousands	Mar. 26, 2017	Dec. 25, 2016	Mar. 11, 2015
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed-rate senior notes payable	$ (500,000)	$ (500,000)
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed-rate senior notes payable	$ (510,250)	$ (503,395)
Senior notes | Senior notes payable at 5.75%
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate	5.75%		5.75%