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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2021	Mar. 28, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 63,935	$ 50,837
Other comprehensive income (loss):
Foreign currency translation adjustment and other	9,829	(44,855)
Amortization of net loss and prior service benefit included in net periodic cost for pension and other post-retirement benefit plans	988	1,374
Comprehensive income, before income taxes	74,752	7,356
Less: Income tax benefit related to items of other comprehensive income	(1,025)	(2,039)
Comprehensive income, net of income taxes	75,777	9,395
Less: Comprehensive income (loss) related to noncontrolling interests, net of income taxes	2,390	(476)
Comprehensive income attributable to common shareholders, net of income taxes	$ 73,387	$ 9,871

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