FAIR VALUE MEASUREMENTS (Schedule of Assets and Liabilities Measured on a Recurring Basis) (Details) - Recurring - USD ($) $ in Thousands	Sep. 24, 2017	Dec. 25, 2016
Commodity futures instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	$ 2,168	$ 5,341
Derivative liabilities	(1,587)	(4,063)
Commodity futures instruments | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	2,168	5,341
Derivative liabilities	(1,587)	(4,063)
Commodity options instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	1,200	98
Derivative liabilities	(2,196)	(2,764)
Commodity options instruments | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	1,200	98
Derivative liabilities	(2,196)	(2,764)
Foreign currency instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	586	516
Derivative liabilities	(387)	(153)
Foreign currency instruments | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	586	516
Derivative liabilities	$ (387)	$ (153)