Employee Benefit Plans (Schedule Of Costs For The Retirement Benefit Plan) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2018	Dec. 30, 2017
Retirement Benefits [Abstract]
Service cost	$ 322	$ 318
Interest cost	155	159
Expected return on plan assets	(322)	(315)
Net amortization and deferral	137	130
Net periodic benefit cost	$ 292	$ 292