Consolidated Statements of Cash Flows (USD $)	9 Months Ended
	Jun. 23, 2012	Jun. 25, 2011
Operating activities:
Net earnings	$ 34,580,000	$ 39,079,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation of property, plant and equipment	19,332,000	18,649,000
Amortization of intangibles and deferred costs	3,572,000	4,013,000
Share-based compensation	919,000	672,000
Gain on bargain purchase of a business		(6,580,000)
Deferred income taxes	(122,000)	(57,000)
Other	(155,000)	19,000
Changes in assets and liabilities net of effects from purchase of companies
Increase in accounts receivable	(8,207,000)	(11,890,000)
Increase in inventories	(9,785,000)	(9,144,000)
Decrease in prepaid expenses	969,000	3,382,000
Increase in accounts payable and accrued liabilities	11,388,000	13,137,000
Net cash provided by operating activities	52,491,000	51,280,000
Investing activities:
Payments for purchases of companies, net of cash acquired	(7,900,000)	(8,806,000)
Purchases of property, plant and equipment	(30,077,000)	(20,069,000)
Purchases of marketable securities	(68,450,000)	(41,293,000)
Proceeds from redemption of marketable securities	81,023,000	27,547,000
Proceeds from disposal of property and equipment	645,000	303,000
Other	(962,000)	(584,000)
Net cash used in investing activities	(25,721,000)	(42,902,000)
Financing activities:
Proceeds from issuance of stock	2,568,000	2,869,000
Payments on capitalized lease obligations	(210,000)	(182,000)
Payment of cash dividend	(7,092,000)	(6,347,000)
Net cash used in financing activities	(4,734,000)	(3,660,000)
Effect of exchange rate on cash and cash equivalents	(34,000)	260,000
Net increase in cash and cash equivalents	22,002,000	4,978,000
Cash and cash equivalents at beginning of period	87,479,000	74,665,000
Cash and cash equivalents at end of period	$ 109,481,000	$ 79,643,000