Stockholders' Equity And Stock-Based Compensation (Tax Benefit from Exercise of Options) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Service Share-based Compensation, Tax Benefit from Exercise of Stock Options	$ 367	$ 358	$ 786	$ 481
Document Period End Date			Jun. 30, 2017