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Investment in Unconsolidated Subsidiary (Details)
barrel in Thousands, $ in Thousands
3 Months Ended
Apr. 01, 2017
USD ($)
barrel
Apr. 02, 2016
USD ($)
Dec. 31, 2016
USD ($)
Jan. 21, 2011
Schedule of Equity Method Investments [Line Items]        
Investment in the joint venture $ 270,921   $ 292,717  
Income (loss) from equity method investments 706 $ 5,643    
Proceeds from Equity Method Investment, Dividends or Distributions $ 25,000 0    
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 246,300      
Income (loss) from equity method investments 600 $ 5,500    
Proceeds from Equity Method Investment, Dividends or Distributions $ 25,000      
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%