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DERIVATIVE FINANCIAL INSTRUMENTS (Details) $ in Thousands	3 Months Ended		9 Months Ended
DERIVATIVE FINANCIAL INSTRUMENTS (Details) $ in Thousands	Oct. 01, 2016 USD ($) item	Oct. 03, 2015 USD ($)	Oct. 01, 2016 USD ($) item	Oct. 03, 2015 USD ($)	Jan. 02, 2016 USD ($) item
Derivative Gain/Loss
Amount in AOCI related to hedge	$ (329,681)		$ (329,681)		$ (427,227)
Distribution expenses	23,736	$ 24,913	68,744	$ 73,053
Cost of goods sold	264,492	293,038	783,540	891,459
Net income	$ 22,445	12,636	$ 103,143	25,423
Diesel fuel
Derivative Gain/Loss
Hedge instrument period span			12 months
Number of hedge agreements \| item	0		0		0
Diesel fuel \| AOCI - Cash flow hedge
Derivative Gain/Loss
Amount in AOCI related to hedge	$ 0		$ 0		$ 0
Natural gas
Derivative Gain/Loss
Hedge instrument period span			12 months
Number of hedge agreements \| item	0		0		0
Natural gas \| AOCI - Cash flow hedge
Derivative Gain/Loss
Amount in AOCI related to hedge	$ 0		$ 0		$ 0
Commodity swap \| AOCI - Cash flow hedge
Derivative Gain/Loss
Gain recognized in Other Comprehensive Income				990
Commodity swap \| AOCI - Cash flow hedge \| Reclassification adjustment
Derivative Gain/Loss
Net income		(770)		(2,211)
Commodity swap \| Diesel fuel \| Reclassification adjustment
Derivative Gain/Loss
Distribution expenses		(717)		(1,913)
Commodity swap \| Diesel fuel \| AOCI - Cash flow hedge
Derivative Gain/Loss
Gain recognized in Other Comprehensive Income				780
Commodity swap \| Natural gas \| Reclassification adjustment
Derivative Gain/Loss
Cost of goods sold		$ (53)		(298)
Commodity swap \| Natural gas \| AOCI - Cash flow hedge
Derivative Gain/Loss
Gain recognized in Other Comprehensive Income				$ 210