Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Name:	us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Other Comprehensive (Loss) Income - Schedule of Components of Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 25, 2021	Jun. 26, 2021	Mar. 27, 2021	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Sep. 25, 2021	Sep. 26, 2020
Other Comprehensive Income (Loss)
Pre-tax	$ (4,840)			$ 16,691			$ (4,162)	$ (2,970)
Tax	114			(290)			209	(2,555)
Total change in other comprehensive (loss) income	(4,954)	$ 5,454	$ (4,871)	16,981	$ (2,417)	$ (14,979)	(4,371)	(415)
Defined benefit pension plan and other adjustments
Other Comprehensive Income (Loss)
Pre-tax	601			273			1,479	(12,270)
Tax	114			(290)			209	(2,555)
Total change in other comprehensive (loss) income	487			563			1,270	(9,715)
Foreign currency translation adjustment
Other Comprehensive Income (Loss)
Pre-tax	(5,441)			16,418			(5,641)	9,300
Tax	0			0			0	0
Total change in other comprehensive (loss) income	$ (5,441)			$ 16,418			$ (5,641)	$ 9,300