Employee Benefit Plans (Schedule Of Changes In The Accumulated Benefit Obligation Of Unfunded Plan) (Details) - Postretirement Benefit Plan - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Change in Accumulated Postretirement Benefit Obligation (APBO):
Projected benefit obligation at prior year measurement date	$ 12,825	$ 12,532
Service cost	118	161	$ 226
Interest cost	288	468	576
Contributions by plan participants	1,699	1,944
Benefits paid	(2,448)	(3,043)
Actuarial (gains) losses	(769)	763
Plan amendment	(1,200)	0
Projected benefit obligation at measurement date	10,513	12,825	$ 12,532
Funded status	(10,513)	(12,825)
Accrued postretirement benefit liability	10,513	12,825
Prior service credit	1,200	0
Actuarial gains	4,178	3,896
Amount recognized in AOCIL, before taxes	$ 5,378	$ 3,896