DERIVATIVE FINANCIAL INSTRUMENTS (Schedule of Outstanding Derivative Instruments and Cash Collateral) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2014	Dec. 29, 2013
Fair values:
Cash collateral posted with brokers	25,205	4,142
Corn [Member]
Derivatives Coverage:
Derivatives Coverage	(8.20%)	1.10%
Soybean Meal [Member]
Derivatives Coverage:
Derivatives Coverage	(16.10%)	(3.60%)
Commodity [Member]
Fair values:
Commodity derivative assets	8,416	2,889
Commodity derivative liabilities	(22,683)	(1,728)
Foreign currency [Member]
Fair values:
Commodity derivative assets	2,563	1,214