Consolidated Balance Sheets (USD $) In Thousands	Jun. 25, 2011	Sep. 25, 2010
Cash and cash equivalents	$ 79,643	$ 74,665
Marketable securities held to maturity	25,528	15,481
Accounts receivable, net	81,846	69,875
Inventories, net	66,561	50,630
Prepaid expenses and other	2,696	6,067
Deferred income taxes	3,876	3,813
[AssetsCurrent]	260,150	220,531
Property, plant and equipment, at cost
Land	2,496	2,016
Buildings	15,766	13,266
Improvements	20,845	19,590
Construction in progress	5,911	3,814
[PropertyPlantAndEquipmentGross]	440,425	414,403
Less accumulated depreciation and amortization	318,050	304,311
[PropertyPlantAndEquipmentNet]	122,375	110,092
Other assets
Goodwill	70,070	70,070
Other intangible assets, net	53,140	55,284
Marketable securities held to maturity	29,998	26,300
Other	2,213	1,717
[OtherAssets]	155,421	153,371
[Assets]	537,946	483,994
Current obligations under capital leases	252	244
Accounts payable	61,872	52,338
Accrued liabilities	10,028	4,269
Accrued compensation expense	10,164	12,244
Dividends payable	2,193	1,986
[LiabilitiesCurrent]	84,509	71,081
Long-term obligations under capital leases	429	619
Deferred income taxes	34,538	30,401
Other long-term liabilities	1,162	1,318
[LiabilitiesNoncurrent]	36,129	32,338
Preferred, $1 par value; authorized, 10,000 shares; none issued	0	0
Common, no par value; authorized 50,000 shares; issued and outstanding, 18,662 and 18,491 shares, respectively	42,150	38,453
Accumulated other comprehensive loss	(2,344)	(2,854)
Retained earnings	377,502	344,976
[StockholdersEquity]	417,308	380,575
[LiabilitiesAndStockholdersEquity]	537,946	483,994
Plant Machineryand Equipment [Member]
Property, plant and equipment, at cost
Equipment	156,923	144,697
Marketing Equipment [Member]
Property, plant and equipment, at cost
Equipment	221,219	214,545
Transportation Equipment [Member]
Property, plant and equipment, at cost
Equipment	4,095	3,785
Office Equipment [Member]
Property, plant and equipment, at cost
Equipment	$ 13,170	$ 12,690