Income Taxes (Withholding Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Income Tax Disclosure [Abstract]
Withholding taxes	$ 12,381	$ 11,540	$ 34,780	$ 33,728