Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Jun. 27, 2020	Jun. 29, 2019
Operating activities:
Net earnings	$ 11,721,000	$ 68,752,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation of property, plant and equipment	37,353,000	33,374,000
Amortization of intangibles and deferred costs	2,516,000	2,586,000
Share-based compensation	3,421,000	3,006,000
Deferred income taxes	(426,000)	690,000
Loss on marketable securities	1,746,000	410,000
Plant shutdown impairment costs	5,072,000	0
Other	(309,000)	350,000
Changes in assets and liabilities net of effects from purchase of companies
Decrease (increase) in accounts receivable	24,634,000	(14,289,000)
Increase in inventories	(3,751,000)	(6,257,000)
(Increase) decrease in prepaid expenses	(7,879,000)	957,000
(Decrease) increase in accounts payable and accrued liabilities	(7,478,000)	11,584,000
Net cash provided by operating activities	66,620,000	101,163,000
Investing activities:
Payment for purchases of companies, net of cash acquired	(57,197,000)	(1,155,000)
Purchases of property, plant and equipment	(47,637,000)	(42,136,000)
Purchases of marketable securities	(6,103,000)	(24,056,000)
Proceeds from redemption and sales of marketable securities	54,125,000	29,721,000
Proceeds from disposal of property, plant and equipment	2,852,000	1,463,000
Other	(72,000)	(212,000)
Net cash used in investing activities	(54,032,000)	(36,375,000)
Financing activities:
Payments to repurchase common stock	(8,972,000)	0
Proceeds from issuance of stock	6,300,000	7,426,000
Payments on capitalized lease obligations	(272,000)	(33,000)
Payment of cash dividend	(31,193,000)	(27,230,000)
Net cash used in financing activities	(34,137,000)	(19,837,000)
Effect of exchange rate on cash and cash equivalents	(885,000)	(333,000)
Net (decrease) increase in cash and cash equivalents	(22,434,000)	44,618,000
Cash and cash equivalents at beginning of period	192,395,000	111,479,000
Cash and cash equivalents at end of period	$ 169,961,000	$ 156,097,000