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Related Party Transactions (Details) - USD ($)
12 Months Ended
Feb. 23, 2015
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Related Party Transaction [Line Items]        
Repayments of Long-term Debt   $ 149,623,000 $ 204,428,000 $ 609,255,000
Diamond Green Diesel Holdings LLC Joint Venture [Member]        
Related Party Transaction [Line Items]        
Revenue from Related Parties   171,300,000 150,500,000 158,700,000
Accounts Receivable, Related Parties, Current   5,600,000 6,300,000  
Related Party, Sales Eliminated   4,100,000 4,100,000 5,000,000
Deferred Revenue, Additions   900,000 700,000 800,000
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%