Consolidated Statements Of Shareholders' Investment (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Oct. 01, 2011
Balance	$ 226,719	$ 210,848	$ 166,106
Total comprehensive income	59,242	46,168	52,550
Exercise of stock compensation	7,894	17,255	12,212
Exercise of stock compensation, Shares	243	491	332
Stock-based compensation	3,663	3,432	2,704
Tax shortfall from equity compensation			(307)
Tax benefit from equity compensation	1,835	(521)
Issuance for employee stock purchase plan	751	631	666
Common stock purchased and retired	(24,767)	(35,323)	(9,864)
Dividends	(18,800)	(16,813)	(13,219)
Balance	256,537	226,719	210,848
Common Stock [Member]
Balance	3,910	3,908	3,816
Balance, Shares	15,640	15,632	15,264
Exercise of stock compensation	61	123	83
Exercise of stock compensation, Shares	243	491	332
Stock-based compensation	10	10	5
Stock-based compensation, Shares	40	40	18
Issuance for employee stock purchase plan	5	5	6
Issuance for employee stock purchase plan, Shares	20	19	24
Common stock purchased and retired	(134)	(136)	(2)
Common stock purchased and retired, Shares	(535)	(542)	(6)
Balance	3,852	3,910	3,908
Balance, Shares	15,408	15,640	15,632
Additional Paid-In Capital [Member]
Balance	652	5,319
Exercise of stock compensation	7,833	17,132	12,129
Stock-based compensation	3,653	3,422	2,699
Tax shortfall from equity compensation			(307)
Tax benefit from equity compensation	1,835	(521)
Issuance for employee stock purchase plan	746	626	660
Common stock purchased and retired	(14,719)	(26,368)	(9,862)
Balance		652	5,319
Retained Earnings [Member]
Balance	211,256	185,332	147,609
Total comprehensive income	57,806	51,556	50,942
Common stock purchased and retired	(9,914)	(8,819)
Dividends	(18,800)	(16,813)	(13,219)
Balance	240,348	211,256	185,332
Accumulated Other Comprehensive Income [Member]
Balance	10,901	16,289	14,681
Total comprehensive income	1,436	(5,388)	1,608
Balance	$ 12,337	$ 10,901	$ 16,289