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Investment in Unconsolidated Subsidiary (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 29, 2018 USD ($) barrel / day $ / gal | Dec. 30, 2017 USD ($) | Dec. 31, 2016 USD ($) | Jan. 21, 2011
Schedule of Equity Method Investments [Line Items] |  |  |  |
Processing Capability, Barrels of Input Feedstock Per Day | barrel / day | 20,000 |  |  |
Investment in the joint venture | $ 410,177 | $ 302,038 |  |
Gain from equity method investments | $ 159,229 | 28,504 | $ 70,379 |
Dollars per Gallon | $ / gal | 1.00 |  |  |
Renewable Diesel, Percentage | 0.10% |  |  |
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital | $ 67,638 | 26,761 | 26,317 |
Diamond Green Diesel Holdings LLC Joint Venture [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  | 50.00%
Investment in the joint venture | 368,700 |  |  |
Gain from equity method investments | 159,800 | 28,200 | 69,900 |
Income Tax Credits and Adjustments | 160,400 |  | 160,600 |
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital | $ 65,000 | $ 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%

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