Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Dec. 30, 2017	Dec. 24, 2016
Operating activities:
Net earnings	$ 36,249,000	$ 13,540,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation of fixed assets	11,152,000	8,728,000
Amortization of intangibles and deferred costs	834,000	1,183,000
Share-based compensation	953,000	748,000
Deferred income taxes	(18,265,000)	(74,000)
Loss on sale of marketable securities	(8,000)
Other	(317,000)	222,000
Changes in assets and liabilities net of effects from purchase of companies
Decrease in accounts receivable	14,547,000	5,849,000
Increase in inventories	(9,933,000)	(6,727,000)
Decrease in prepaid expenses	111,000	5,747,000
Decrease in accounts payable and accrued liabilities	(9,216,000)	(2,816,000)
Net cash provided by operating activities	26,107,000	26,400,000
Investing activities:
Purchases of property, plant and equipment	(14,623,000)	(11,399,000)
Purchases of marketable securities	(30,865,000)	(8,550,000)
Proceeds from redemption and sales of marketable securities	19,096,000	475,000
Proceeds from disposal of property and equipment	1,046,000	645,000
Other	27,000	(20,000)
Net cash used in investing activities	(25,319,000)	(18,849,000)
Financing activities:
Payments to repurchase common stock
Proceeds from issuance of stock	253,000	980,000
Payments on capitalized lease obligations	(90,000)	(90,000)
Payment of cash dividend	(7,838,000)	(7,280,000)
Net cash used in financing activities	(7,675,000)	(6,390,000)
Effect of exchange rate on cash and cash equivalents	(2,986,000)	(847,000)
Net (decrease)increase in cash and cash equivalents	(9,873,000)	314,000
Cash and cash equivalents at beginning of period	90,962,000	140,652,000
Cash and cash equivalents at end of period	$ 81,089,000	$ 140,966,000