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Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from contract modification which (increases) decreases obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Fair value of the amount outstanding under the credit facility.

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Related Party Transactions (Details)		3 Months Ended
Related Party Transactions (Details)	Mar. 30, 2019	Mar. 28, 2020 USD ($)	Mar. 30, 2019 USD ($)	Feb. 29, 2020 USD ($) agreement	Dec. 28, 2019 USD ($)	May 01, 2019 USD ($)
Related Party Transaction [Line Items]
Payments on long-term debt		$ (8,638,000)	$ (10,974,000)
Number Of Terminaling Agreements \| agreement				2
Related Party, Unrecorded Unconditional Guarantee				$ 50,000,000
Diamond Green Diesel Holdings LLC Joint Venture [Member]
Related Party Transaction [Line Items]
Revenue from Related Parties		62,100,000	51,200,000
Accounts Receivable, Related Parties, Current		12,900,000			$ 17,800,000
Related Party Sales Eliminated		5,700,000	5,900,000
Deferred Revenue, Additions		1,000,000.0	$ 1,000,000
Revolving Loan Agreement [Member] \| Revolving Credit Facility [Member]
Related Party Transaction [Line Items]
Revolving Loan Agreement, Maximum Borrowing Capacity						$ 50,000,000.0
Revolving Loan Agreement, Fair Value of Amount Outstanding		$ 0
Revolving Loan Agreement [Member] \| Lender One [Member] \| Revolving Credit Facility [Member]
Related Party Transaction [Line Items]
Revolving Loan Agreement, Maximum Borrowing Capacity						$ 25,000,000.0
LIBO Rate [Member] \| Revolving Loan Agreement [Member] \| Revolving Credit Facility [Member]
Related Party Transaction [Line Items]
Basis spread on variable rate	2.50%