Employee Benefit Plans (Schedule Of Cost Of The Postretirement Benefit Plan) (Details) - Postretirement Benefit Plan - USD ($) $ in Thousands	12 Months Ended
	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 55	$ 68	$ 84
Interest cost	211	315	281
Amortization of prior service credit	(259)	(471)	(470)
Amortization of actuarial gain	(607)	(713)	(511)
Net periodic postretirement benefit cost (income)	$ (600)	$ (801)	$ (616)