Financial Instruments - Summary of Location and Fair Value (Details) - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	Sep. 26, 2020	Dec. 28, 2019
Derivatives, Fair Value [Line Items]
Total derivative assets	$ 773	$ 1,423
Total derivative liabilities	0	(109)
Other Current Assets [Member] \| Commodity Contracts [Member]
Derivatives, Fair Value [Line Items]
Other current assets: Gain positions	791	1,435
Other current assets: Loss positions	(18)	(12)
Other Current Liabilities [Member] \| Commodity Contracts [Member]
Derivatives, Fair Value [Line Items]
Other current liability: Gain positions	0	50
Other current liability: Loss positions	$ 0	$ (159)

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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