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Investment in Unconsolidated Subsidiary (Details) barrel in Thousands, $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2018 USD ($) barrel | Apr. 01, 2017 USD ($) | Dec. 30, 2017 USD ($) | Jan. 21, 2011
Schedule of Equity Method Investments [Line Items] |  |  |  |
Investment in the joint venture | $ 409,135 |  | $ 302,038 |
Income (loss) from equity method investments | $ 97,154 | $ 706 |  |
Diamond Green Diesel Holdings LLC Joint Venture [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Ownership percentage |  |  |  | 50.00%
Processing cabaility | barrel | 12 |  |  |
Line of credit term | 14 years |  |  |
Term loan facility | $ 221,300 |  |  |
Investment in the joint venture | 371,100 |  |  |
Income (loss) from equity method investments | 97,200 | $ 600 |  |
Income Tax Credits and Adjustments | $ 160,400 |  |  |
Diamond Green Diesel Holdings LLC Joint Venture [Member] | Valero Energy Corporation [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Ownership percentage |  |  |  | 50.00%

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