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Investment in Unconsolidated Subsidiary (Details) (USD $) | 12 Months Ended | 7 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 28, 2013 boe | Dec. 29, 2012 | Dec. 31, 2011 | Dec. 31, 2011 Diamond Green Diesel Holdings LLC Joint Venture [Member] | Dec. 28, 2013 Diamond Green Diesel Holdings LLC Joint Venture [Member] | Dec. 29, 2012 Diamond Green Diesel Holdings LLC Joint Venture [Member] | Jan. 21, 2011 Diamond Green Diesel Holdings LLC Joint Venture [Member] | Jan. 21, 2011 Valero Energy Corporation [Member] Diamond Green Diesel Holdings LLC Joint Venture [Member]
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Joint Venture Potential Barrels Of Fuel Per Day | 9,300 |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  | 50.00% | 50.00%
Line of Credit Facility, Term |  |  |  | 14 years |  |  |  |
Term loan facility |  |  |  |  | $ 221,300,000 |  |  |
Darling's total contributions for constructing and funding Joint Venture |  |  |  |  | 111,700,000 |  |  |
Investment in the joint venture | 115,114,000 | 62,495,000 |  |  | 115,100,000 |  |  |
Loss from equity method investments | $ (7,660,000) | $ 2,662,000 | $ 1,572,000 |  | $ (7,700,000) | $ 2,700,000 |  |

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