Borrowing Arrangements (Schedule Of Additional Information Regarding Interest Expenses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 30, 2012	Apr. 01, 2011	Mar. 30, 2012	Apr. 01, 2011
Debt Disclosure [Abstract]
Effective interest rate on the liability component	6.86%	6.86%	6.86%	6.86%
Cash interest expense recognized (contractual interest)	$ 8	$ 100	$ 105	$ 200
Effective interest expense recognized	$ 77	$ 333	$ 428	$ 661