Consolidated Statements Of Shareholders' Investment (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 29, 2012
Balance	$ 256,537	$ 226,719	$ 210,848
Total comprehensive income	35,496	59,242	46,168
Exercise of stock compensation	6,726	7,894	17,255
Exercise of stock compensation, Shares	182	243	491
Stock-based compensation	6,052	3,663	3,432
Tax shortfall from equity compensation			521
Tax benefit from equity compensation	1,727	1,835
Issuance for employee stock purchase plan	864	751	631
Common stock purchased and retired	(31,013)	(24,767)	(35,323)
Dividends	(18,262)	(18,800)	(16,813)
Balance	258,127	256,537	226,719
Common Stock [Member]
Balance	3,852	3,910	3,908
Balance, Shares	15,408	15,640	15,632
Exercise of stock compensation	46	61	123
Exercise of stock compensation, Shares	182	243	491
Stock-based compensation	7	10	10
Stock-based compensation, Shares	31	40	40
Issuance for employee stock purchase plan	4	5	5
Issuance for employee stock purchase plan, Shares	16	20	19
Common stock purchased and retired	(114)	(134)	(136)
Common stock purchased and retired, Shares	(457)	(535)	(542)
Balance	3,795	3,852	3,910
Balance, Shares	15,180	15,408	15,640
Additional Paid-In Capital [Member]
Balance		652	5,319
Exercise of stock compensation	6,680	7,833	17,132
Stock-based compensation	6,045	3,653	3,422
Tax shortfall from equity compensation			521
Tax benefit from equity compensation	1,727	1,835
Issuance for employee stock purchase plan	860	746	626
Common stock purchased and retired	(9,200)	(14,719)	(26,368)
Balance	6,112		652
Retained Earnings [Member]
Balance	240,348	211,256	185,332
Total comprehensive income	42,009	57,806	51,556
Common stock purchased and retired	(21,699)	(9,914)	(8,819)
Dividends	(18,262)	(18,800)	(16,813)
Balance	242,396	240,348	211,256
Accumulated Other Comprehensive Income [Member]
Balance	12,337	10,901	16,289
Total comprehensive income	(6,513)	1,436	(5,388)
Balance	$ 5,824	$ 12,337	$ 10,901