Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018
Operating activities:
Net earnings	$ 68,752,000	$ 80,211,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation of property, plant and equipment	33,374,000	31,929,000
Amortization of intangibles and deferred costs	2,586,000	2,639,000
Share-based compensation	3,006,000	2,874,000
Deferred income taxes	690,000	(12,502,000)
Loss on marketable securities	410,000	32,000
Other	350,000	(3,000)
Changes in assets and liabilities net of effects from purchase of companies
Increase in accounts receivable	(14,289,000)	(7,530,000)
Increase in inventories	(6,257,000)	(13,020,000)
Decrease (increase) in prepaid expenses	957,000	(2,949,000)
Increase in accounts payable and accrued liabilities	11,584,000	3,606,000
Net cash provided by operating activities	101,163,000	85,287,000
Investing activities:
Payment for purchases of companies, net of cash acquired	(1,155,000)	0
Purchases of property, plant and equipment	(42,136,000)	(43,344,000)
Purchases of marketable securities	(24,056,000)	(65,227,000)
Proceeds from redemption and sales of marketable securities	29,721,000	51,417,000
Proceeds from disposal of property, plant and equipment	1,463,000	1,895,000
Other	(212,000)	171,000
Net cash used in investing activities	(36,375,000)	(55,088,000)
Financing activities:
Payments to repurchase common stock	0	(2,794,000)
Proceeds from issuance of stock	7,426,000	5,561,000
Payments on capitalized lease obligations	(33,000)	(278,000)
Payment of cash dividend	(27,230,000)	(24,652,000)
Net cash used in financing activities	(19,837,000)	(22,163,000)
Effect of exchange rate on cash and cash equivalents	(333,000)	(3,370,000)
Net increase in cash and cash equivalents	44,618,000	4,666,000
Cash and cash equivalents at beginning of period	111,479,000	90,962,000
Cash and cash equivalents at end of period	$ 156,097,000	$ 95,628,000