Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Oct. 01, 2023	Oct. 02, 2022	Oct. 03, 2021
Statement of Comprehensive Income [Abstract]
Net earnings	$ 130,826	$ 115,781	$ 165,755
Other comprehensive income:
Actuarial gains arising during the period	823	24,249	44,134
Amortization of actuarial losses and prior service cost reclassified to earnings	2,154	3,238	4,931
Other comprehensive income, before tax	2,977	27,487	49,065
Tax effect	(785)	(7,215)	(12,714)
Other comprehensive income, net of taxes	2,192	20,272	36,351
Comprehensive income	$ 133,018	$ 136,053	$ 202,106