Derivative Financial Instruments - Derivative Instruments Recorded at Fair Value (Details) - USD ($) $ in Thousands	Jul. 04, 2021	Dec. 31, 2020	Jun. 30, 2020
Derivative Financial Instruments
Derivative Assets	$ 357	$ 1,462	$ 1,332
Derivative Liabilities	(22,507)	(30,791)	(34,072)
Interest Rate Swap
Derivative Financial Instruments
Derivative Assets	833	1,462	1,332
Derivative Liabilities	(22,982)	(30,791)	(34,072)
Derivatives Designated as Cash Flow Hedges
Derivative Financial Instruments
Derivative Liabilities	(11,603)	(16,884)	(18,332)
Derivatives Designated as Cash Flow Hedges \| Interest Rate Swap
Derivative Financial Instruments
Derivative Liabilities - Current	(5,169)	(5,251)	(4,639)
Derivative Liabilities - Noncurrent	(6,434)	(11,633)	(13,693)
Derivatives Not Designated as Hedging Instruments
Derivative Financial Instruments
Derivative Assets	357	1,462	1,332
Derivative Liabilities	(10,904)	(13,907)	(15,740)
Derivatives Not Designated as Hedging Instruments \| Interest Rate Swap
Derivative Financial Instruments
Derivative Assets - Current	833	877	655
Derivative Assets - Noncurrent		585	677
Derivative Liabilities - Current	(4,830)	(4,875)	(4,345)
Derivative Liabilities - Noncurrent	$ (6,549)	$ (9,032)	$ (11,395)

Fair value, after the effects of master netting arrangements, of a 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. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a 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, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a 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, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a financial liability or 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, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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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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