Related Party Transactions	12 Months Ended
Dec. 30, 2017
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]	RELATED PARTY TRANSACTIONS Raw Material Agreement The Company has entered into a Raw Material Agreement with the DGD Joint Venture pursuant to which the Company will offer to supply certain animal fats and used cooking oil at market prices, up to the DGD Joint Venture's full operational requirement of feedstock, but the DGD Joint Venture is not obligated to purchase the raw material offered by the Company. Additionally, the Company may offer other feedstocks to the DGD Joint Venture, such as inedible corn oil, purchased on a resale basis. For the years ended December 30, 2017, December 31, 2016 and January 2, 2016, the Company has recorded sales to the DGD Joint Venture of approximately $171.3 million, $150.5 million and $158.7 million, respectively. At December 30, 2017 and December 31, 2016, the Company has approximately $5.6 million and $6.3 million in outstanding receivables due from the DGD Joint Venture, respectively. In addition, the Company has eliminated additional sales of approximately $4.1 million, $4.1 million and $5.0 million for the year ended December 30, 2017, December 31, 2016 and January 2, 2016, respectively to the DGD Joint Venture and deferred the Company's portion of profit on those sales relating to inventory assets still remaining on the DGD Joint Venture's balance sheet at December 30, 2017, December 31, 2016 and January 2, 2016 of approximately $0.9 million, $0.7 million and $0.8 million, respectively. Revolving Loan Agreement On February 23, 2015, Darling through its wholly owned subsidiary Darling Green Energy LLC, (“Darling Green”) and a third party Diamond Alternative Energy, LLC (“Diamond Alternative” and together with Darling Green, the “DGD Lenders”) entered into a revolving loan agreement (the “DGD Loan Agreement”) with the DGD Joint Venture Opco. The DGD Lenders have committed to make loans available to Opco in the total amount of $10.0 million with each lender committed to $5.0 million of the total commitment. Any borrowings by Opco under the DGD Loan Agreement are at the applicable annum rate equal to the sum of (a) the LIBO Rate (meaning Reuters BBA Libor Rates Page 3750) on such day plus (b) 2.50%. The DGD Loan Agreement matures on December 31, 2018, unless extended by agreement of the parties. The Opco borrowed and repaid $2.5 million and $3.5 million in fiscal 2016 and fiscal 2015, respectively plus an insignificant amount of interest to Darling Green. As of December 30, 2017, no amounts are owed to Darling Green under the DGD Loan Agreement.

RELATED PARTY TRANSACTIONS

Raw Material Agreement

The Company has entered into a Raw Material Agreement with the DGD Joint Venture pursuant to which the Company will offer to supply certain animal fats and used cooking oil at market prices, up to the DGD Joint Venture's full operational requirement of feedstock, but the DGD Joint Venture is not obligated to purchase the raw material offered by the Company. Additionally, the Company may offer other feedstocks to the DGD Joint Venture, such as inedible corn oil, purchased on a resale basis. For the years ended December 30, 2017, December 31, 2016 and January 2, 2016, the Company has recorded sales to the DGD Joint Venture of approximately $171.3 million, $150.5 million and $158.7 million, respectively. At December 30, 2017 and December 31, 2016, the Company has approximately $5.6 million and $6.3 million in outstanding receivables due from the DGD Joint Venture, respectively. In addition, the Company has eliminated additional sales of approximately $4.1 million, $4.1 million and $5.0 million for the year ended December 30, 2017, December 31, 2016 and January 2, 2016, respectively to the DGD Joint Venture and deferred the Company's portion of profit on those sales relating to inventory assets still remaining on the DGD Joint Venture's balance sheet at December 30, 2017, December 31, 2016 and January 2, 2016 of approximately $0.9 million, $0.7 million and $0.8 million, respectively.

Revolving Loan Agreement

On February 23, 2015, Darling through its wholly owned subsidiary Darling Green Energy LLC, (“Darling Green”) and a third party Diamond Alternative Energy, LLC (“Diamond Alternative” and together with Darling Green, the “DGD Lenders”) entered into a revolving loan agreement (the “DGD Loan Agreement”) with the DGD Joint Venture Opco. The DGD Lenders have committed to make loans available to Opco in the total amount of $10.0 million with each lender committed to $5.0 million of the total commitment. Any borrowings by Opco under the DGD Loan Agreement are at the applicable annum rate equal to the sum of (a) the LIBO Rate (meaning Reuters BBA Libor Rates Page 3750) on such day plus (b) 2.50%. The DGD Loan Agreement matures on December 31, 2018, unless extended by agreement of the parties. The Opco borrowed and repaid $2.5 million and $3.5 million in fiscal 2016 and fiscal 2015, respectively plus an insignificant amount of interest to Darling Green. As of December 30, 2017, no amounts are owed to Darling Green under the DGD Loan Agreement.