Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2020	Dec. 28, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 23,515	$ 35,455
Other comprehensive income, net of tax:
Hedge loss arising during the period, net of tax benefit of $0 million and $1.1 million in the first quarter of 2021 and 2020, respectively	(6,779)	(3,343)
Foreign currency translation adjustment, net of tax of $0 for each period	19,975	10,147
Unrealized loss on marketable securities, net of tax of $0 for each period	(307)	(7)
Amortization of net actuarial pension loss included in net income, net of tax of $0.3 million and $0.3 million in the first quarter of 2021 and 2020, respectively	732	674
Change in unamortized pension loss during the period related to changes in foreign currency	(1,112)	(622)
Other comprehensive income	12,509	6,849
Comprehensive income	$ 36,024	$ 42,304