Earnings Per Share (Schedule Of Earnings Per Share, Basic And Diluted) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Earnings Per Share [Abstract]
Net income	$ 8,979	$ 10,610	$ 50,568	$ 19,514
Weighted average common shares outstanding (in shares)	19,174	19,052	19,149	19,012
Effect of dilutive securities
Stock-based compensation (in shares)	131	86	120	96
Weighted average dilutive common shares outstanding (in shares)	19,305	19,138	19,269	19,108
Earnings per share
Basic (in dollars per share)	$ 0.47	$ 0.56	$ 2.64	$ 1.03
Diluted (in dollars per share)	$ 0.47	$ 0.55	$ 2.62	$ 1.02