Employee Benefit Plans (Net Periodic Benefit Cost For Defined Benefit Retirement Plan) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Compensation and Retirement Disclosure [Abstract]
Service cost	$ 1,426	$ 971	$ 860
Interest cost	431	608	634
Expected return on plan assets	(1,085)	(1,027)	(1,009)
Net amortization and deferral	996	584	501
Special termination benefits	0	0	0
Net periodic benefit cost	$ 1,768	$ 1,136	$ 986