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Investment in Unconsolidated Subsidiary (Details) $ in Thousands	2 Months Ended	3 Months Ended	7 Months Ended	12 Months Ended
	Feb. 28, 2017 USD ($)	Jan. 02, 2016 USD ($)	Dec. 31, 2011	Dec. 31, 2016 USD ($) barrel / day $ / gal	Dec. 31, 2016 USD ($)	Jan. 02, 2016 USD ($)	Dec. 31, 2015 USD ($)	Jan. 03, 2015 USD ($)	Dec. 31, 2014 USD ($)	May 31, 2011 USD ($)	Jan. 21, 2011
Schedule of Equity Method Investments [Line Items]
Processing Capability, Barrels of Input Feedstock Per Day | barrel / day				12,000
Investment in the joint venture		$ 247,238		$ 292,717	$ 292,717	$ 247,238
Gain from equity method investments				$ 70,379		73,416		$ 65,609
Dollars per Gallon | $ / gal				1.00
Renewable Diesel, Percentage				0.10%
Income Tax Credits and Adjustments		$ 85,400
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital				$ 26,317		26,589		0
Diamond Green Diesel Holdings LLC Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage											50.00%
Line of credit facility, term			14 years
Term loan facility										$ 221,300
Investment in the joint venture				270,700	270,700
Gain from equity method investments				69,900		71,900		$ 63,800
Income Tax Credits and Adjustments					$ 160,600		$ 156,600		$ 126,000
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital				$ 25,000		$ 25,000
Valero Energy Corporation [Member] | Diamond Green Diesel Holdings LLC Joint Venture [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]
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital	$ 25,000

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