Earnings Per Share (Schedule Of Reconciliation Of Amounts Utilized In Computation Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Mar. 30, 2013	Mar. 31, 2012
Earnings Per Share [Line Items]
Net income	$ 17,975	$ 19,958	$ 34,591	$ 37,828
Basic weighted average common shares outstanding	34,286,000	34,874,000	34,253,000	34,737,000
Dilutive effect of share-based awards outstanding	408,000	784,000	420,000	694,000
Diluted weighted average shares outstanding	34,694,000	35,658,000	34,673,000	35,431,000
Earnings per share, Basic	$ 0.52	$ 0.57	$ 1.01	$ 1.09
Earnings per share, Diluted	$ 0.52	$ 0.56	$ 1.00	$ 1.07
Stock Options [Member]
Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted earnings per share	2,300,000	1,000,000	2,300,000	1,200,000