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Investment in Unconsolidated Subsidiary (Details) barrel in Thousands, $ in Thousands		3 Months Ended
	Apr. 03, 2016 USD ($)	Apr. 02, 2016 USD ($) barrel	Apr. 04, 2015 USD ($)	Jan. 02, 2016 USD ($)	Jan. 21, 2011
Schedule of Equity Method Investments [Line Items]
Investment in the joint venture		$ 256,604		$ 247,238
Income (loss) from equity method investments		$ 5,643	$ (1,808)
Diamond Green Diesel Holdings LLC Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage					50.00%
Processing cabaility | barrel		12
Line of credit term		14 years
Term loan facility		$ 221,300
Investment in the joint venture		231,300
Income (loss) from equity method investments		$ 5,500	$ (2,200)
Diamond Green Diesel Holdings LLC Joint Venture [Member] | Valero Energy Corporation [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage					50.00%
Subsequent Event [Member] | Diamond Green Diesel Holdings LLC Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Income Tax Credits and Adjustments	$ 156,400
Debt Instrument, Periodic Payment, Principal	54,700
Distributions of earnings from unconsolidated subsidiaries	$ 25,000

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