Goodwill And Intangible Assets (Intangibles Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of acquired intangible assets	$ 18,518	$ 21,058	$ 24,708
Future amortization expenses, 2018	18,300
Future amortization expenses, 2019	17,200
Future amortization expenses, 2020	14,900
Future amortization expenses, 2021	9,400
Future amortization expenses, 2022	$ 7,100