Quarterly Financial Data (Schedule Of Quarterly Financial Data) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 03, 2015	Jul. 04, 2015	Apr. 04, 2015	Jan. 03, 2015	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Oct. 03, 2015	Sep. 27, 2014	Sep. 28, 2013
Quarterly Financial Data [Abstract]
Net sales	$ 668,730	$ 669,585	$ 651,285	$ 664,690	$ 666,223	$ 620,505	$ 557,616	$ 533,905	$ 2,654,290	$ 2,378,249	$ 2,228,031
Gross Profit	59,272	59,087	59,777	61,414	62,639	58,593	52,835	51,502	239,550	225,569	213,185
Net income	$ 23,865	$ 23,794	$ 23,594	$ 23,079	$ 26,450	$ 24,584	$ 18,516	$ 17,663	$ 94,332	$ 87,213	$ 82,259
Earnings Per Share, Basic	$ 0.71	$ 0.71	$ 0.70	$ 0.69	$ 0.78	$ 0.73	$ 0.55	$ 0.52	$ 2.81	$ 2.58	$ 2.40
Earnings Per Share, Diluted	$ 0.70	$ 0.69	$ 0.69	$ 0.67	$ 0.77	$ 0.71	$ 0.53	$ 0.51	$ 2.74	$ 2.52	$ 2.36