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Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 24, 2020	Jun. 30, 2021	Jun. 24, 2020
Statement of Comprehensive Income [Abstract]
Tax effect of minimum pension liability adjustment	$ 11	$ 6	$ 21	$ 12
Changes in fair value of cash flow derivatives, tax	(192)	(772)	571	(12,567)
Reclassification of cash flow derivatives to interest expense, tax	257	334	512	420
Reclassification of loss related to dedesignation of derivatives to other nonoperating expense (income), tax	0	1,892	0	1,892
Reclassification of unrealized losses related to derivatives to interest expense, tax	$ 11	$ 69	$ 42	$ 69

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- Definition

Other Comprehensive Income (Loss), Reclassification Of Unrealized Gains (Losses), Tax

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Amount, before reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
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Amount of tax expense (benefit) for reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan.

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