Derivative Instruments and Hedging Activities - Derivative Assets and Liabilities (Details) - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 29, 2018
Derivatives, Fair Value [Line Items]
Assets fair value	$ 1,423	$ 87
Liabilities fair value	(109)	(1,279)
Other Current Asset [Member] \| Commodity Contract [Member]
Derivatives, Fair Value [Line Items]
Other current assets: Gain positions	1,435	88
Other current assets: Loss positions	(12)	(1)
Other Current Liabilities [Member] \| Commodity Contract [Member]
Derivatives, Fair Value [Line Items]
Other current liability: Gain positions	50	103
Other current liability: Loss positions	$ (159)	$ (1,382)

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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