FAIR VALUE MEASUREMENTS (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 30, 2012
Derivative assets - commodity futures instruments	$ 5,077	$ 1,821
Deferred compensation plan assets	7,850	7,591
Derivative liabilities - commodity futures instruments	(2,778)	(1,530)
Long-term debt and other borrowing arrangements	(1,197,099)	(1,208,730)
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Derivative assets - commodity futures instruments	5,077	1,821
Deferred compensation plan assets	7,850	7,591
Derivative liabilities - commodity futures instruments	(2,778)	(1,530)
Long-term debt and other borrowing arrangements	(1,142,365)	(1,164,756)
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Future [Member]
Derivative assets - commodity futures instruments	5,077	1,821
Derivative liabilities - commodity futures instruments	$ (2,778)	$ (1,530)