Quarterly Financial Data (Schedule Of Quarterly Financial Data) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Jan. 01, 2011	Sep. 29, 2012	Oct. 01, 2011	Oct. 02, 2010
Quarterly Financial Data [Abstract]
Revenue, Net	$ 594,789	$ 608,819	$ 573,470	$ 529,654	$ 538,130	$ 559,183	$ 568,145	$ 565,774	$ 2,306,732	$ 2,231,232	$ 2,013,393
Gross Profit	56,244	57,393	54,624	51,652	50,288	54,074	55,470	54,910	219,913	214,742	206,922
Net income	$ 728	$ 23,533	$ 19,958	$ 17,870	$ 18,323	$ 22,040	$ 23,860	$ 25,033	$ 62,089	$ 89,256	$ 89,533
Earnings Per Share, Basic	$ 0.02	$ 0.67	$ 0.57	$ 0.52	$ 0.53	$ 0.60	$ 0.60	$ 0.62	$ 1.78	$ 2.34	$ 2.24
Earnings Per Share, Diluted	$ 0.02	$ 0.66	$ 0.56	$ 0.51	$ 0.52	$ 0.58	$ 0.59	$ 0.61	$ 1.75	$ 2.30	$ 2.19