Accumulated Other Comprehensive Income (Loss) - Changes in AOCI by Component (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2021	Jun. 27, 2020	Jun. 26, 2021	Jun. 27, 2020
Changes in accumulated other comprehensive income [Roll Forward]
Balance at beginning of period			$ 801,060
Total other comprehensive (loss) income, net	$ (501)	$ (255)	6,275	$ (22,241)
Balance at end of period	973,916		973,916
Cumulative Translation Adjustment [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Balance at beginning of period			(37,339)	(46,198)
Other comprehensive income (loss) before reclassifications			8,248	(19,622)
Amounts reclassified from AOCI			0	0
Total other comprehensive (loss) income, net			8,248	(19,622)
Balance at end of period	(29,091)	(65,820)	(29,091)	(65,820)
Unrealized (Loss) Gain on Derivatives [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Balance at beginning of period			984	476
Other comprehensive income (loss) before reclassifications			4	(5,413)
Amounts reclassified from AOCI			(2,848)	5,454
Total other comprehensive (loss) income, net			(2,844)	41
Balance at end of period	(1,860)	517	(1,860)	517
Pension/OPEB Liability Adjustment [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Balance at beginning of period			(17,203)	(21,855)
Other comprehensive income (loss) before reclassifications			(400)	(1,034)
Amounts reclassified from AOCI			383	489
Total other comprehensive (loss) income, net			(17)	(545)
Balance at end of period	(17,220)	(22,400)	(17,220)	(22,400)
Attributable to Unconsolidated Affiliates [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Balance at beginning of period			(1,325)	(1,193)
Other comprehensive income (loss) before reclassifications			1,234	(903)
Amounts reclassified from AOCI			0	0
Total other comprehensive (loss) income, net			1,234	(903)
Balance at end of period	(91)	(2,096)	(91)	(2,096)
Total [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Balance at beginning of period	(48,528)	(90,165)	(54,883)	(68,770)
Other comprehensive income (loss) before reclassifications			9,086	(26,972)
Amounts reclassified from AOCI			(2,465)	5,943
Total other comprehensive (loss) income, net	266	366	6,621	(21,029)
Balance at end of period	$ (48,262)	$ (89,799)	$ (48,262)	$ (89,799)