CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 129,986	$ 139,082	$ 164,565
Other comprehensive income (loss):
Pension and postemployment adjustments, net of tax	(16,095)	(8,087)	877
Foreign currency translation adjustments	31,761	(812)	(25,338)
Comprehensive income	$ 145,652	$ 130,183	$ 140,104