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Related Party Transactions (Details) - USD ($)		12 Months Ended
	Feb. 23, 2015	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Related Party Transaction [Line Items]
Repayments of Long-term Debt		$ 204,428,000	$ 609,255,000	$ 333,762,000
Diamond Green Diesel Holdings LLC Joint Venture [Member]
Related Party Transaction [Line Items]
Revenue from Related Parties		150,500,000	158,700,000	159,800,000
Accounts Receivable, Related Parties, Current		6,300,000	5,100,000
Related Party, Sales Eliminated		4,100,000	5,000,000	5,100,000
Deferred Revenue, Additions		700,000	800,000	$ 1,300,000
Revolving Credit Facility [Member] | Revolving Loan Agreement [Member]
Related Party Transaction [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 10,000,000.0
Repayments of Long-term Debt		2,500,000	$ 3,500,000
Line of Credit Facility, Fair Value of Amount Outstanding		$ 0
Lender One [Member] | Revolving Credit Facility [Member] | Revolving Loan Agreement [Member]
Related Party Transaction [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 5,000,000.0
LIBO Rate [Member] | Revolving Credit Facility [Member] | Revolving Loan Agreement [Member]
Related Party Transaction [Line Items]
Debt instrument, basis spread on variable rate	2.50%

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