Employee Benefit Plans (Schedule of Costs for the Retirement Benefit Plan) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Retirement Benefits [Abstract]
Service cost	$ 321	$ 331	$ 643	$ 649
Interest cost	155	165	310	324
Expected return on plan assets	(321)	(328)	(643)	(643)
Net amortization and deferral	137	137	274	267
Net periodic benefit cost	$ 292	$ 305	$ 584	$ 597