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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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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Fair value of the amount outstanding under the credit facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Related Party Transactions (Details)		3 Months Ended		6 Months Ended
Related Party Transactions (Details)	Mar. 30, 2019	Jun. 27, 2020 USD ($)	Jun. 29, 2019 USD ($)	Jun. 27, 2020 USD ($)	Jun. 29, 2019 USD ($)	Feb. 29, 2020 USD ($) agreement	Dec. 28, 2019 USD ($)	May 01, 2019 USD ($)
Related Party Transaction [Line Items]
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		$ 72,300,000	$ 51,000,000.0	$ 134,400,000	$ 102,200,000
Accounts Receivable, Related Parties, Current		13,700,000		13,700,000			$ 17,800,000
Related Party Sales Eliminated				8,600,000	7,800,000
Deferred Revenue, Additions				1,700,000	$ 1,400,000
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		$ 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%