Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Mar. 26, 2016	Mar. 28, 2015
Operating activities:
Net earnings	$ 28,566,000	$ 25,893,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation of fixed assets	16,761,000	15,987,000
Amortization of intangibles and deferred costs	2,909,000	2,869,000
Share-based compensation	1,055,000	1,009,000
Deferred income taxes	(139,000)	14,000
Loss on sale of marketable securities	406,000	509,000
Other	289,000	(199,000)
Changes in assets and liabilities net of effects from purchase of companies
(Increase)decrease in accounts receivable	(285,000)	3,885,000
Increase in inventories	(18,128,000)	(13,158,000)
Increase in prepaid expenses	(1,054,000)	(1,918,000)
Decrease in accounts payable and accrued liabilities	(2,079,000)	(6,373,000)
Net cash provided by operating activities	28,301,000	28,518,000
Investing activities:
Purchases of property, plant and equipment	(23,735,000)	(17,933,000)
Purchases of marketable securities	(31,286,000)	(13,136,000)
Proceeds from Sale and Maturity of Marketable Securities	5,384,000	13,601,000
Proceeds from disposal of property and equipment	835,000	862,000
Other	582,000	(56,000)
Net cash used in investing activities	(48,220,000)	(16,662,000)
Financing activities:
Payments to repurchase common stock	(11,758,000)	(2,114,000)
Proceeds from issuance of stock	1,984,000	2,070,000
Payments on capitalized lease obligations	(176,000)	(105,000)
Payment of cash dividend	(14,006,000)	(12,696,000)
Net cash used in financing activities	(23,956,000)	(12,845,000)
Effect of exchange rate on cash and cash equivalents	(477,000)	(2,156,000)
Net decrease in cash and cash equivalents	(44,352,000)	(3,145,000)
Cash and cash equivalents at beginning of period	133,689,000	91,760,000
Cash and cash equivalents at end of period	$ 89,337,000	$ 88,615,000