Earnings Per Share (Schedule Of Earnings Per Share, Basic And Diluted) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 29, 2018	Dec. 30, 2017
Earnings Per Share [Abstract]
Net income	$ 10,501	$ 33,151
Weighted average common shares outstanding (in shares)	19,216	19,124
Effect of dilutive securities
Stock-based compensation (in shares)	148	130
Tangible equity units (in shares)	192	0
Weighted average dilutive common shares outstanding (in shares)	19,556	19,254
Earnings per share
Basic (in dollars per share)	$ 0.55	$ 1.73
Diluted (in dollars per share)	$ 0.54	$ 1.72