Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Cash Flows from Operating Activities
Net income (loss)	$ 4,235	$ 24,661
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Stock-based compensation	5,095	4,689
Fair value adjustment to acquired inventory	1,140	984
Net periodic pension benefit cost	922	584
Depreciation	12,069	10,249
Amortization	11,055	8,219
Accretion of contingent consideration	456	0
(Gain) loss on sale or disposal of property and equipment	1,050	510
Amortization of debt issuance costs	1,444	2,099
Deferred income taxes	893	(1,243)
Bad debt provision (recovery), net	(1,160)	503
Changes in operating assets and liabilities
Accounts receivable and unbilled accounts receivable	18,728	(3,763)
Inventories, net	(13,560)	(12,942)
Prepaid expenses	774	(4,106)
Accounts payable	1,090	(10,378)
Accrued payroll and related costs	(8,567)	(5,629)
Advance payments from customers	(12,507)	4,653
Accrued warranty costs	900	(671)
Other assets and liabilities	(26,636)	12,250
Net Cash Provided by (Used in) Operating Activities	(2,579)	30,669
Cash Flows from Investing Activities
Purchases of property and equipment	(16,281)	(9,349)
Proceeds from sale of property and equipment	0	10
Purchases of business, net of acquired cash	(48,104)	(81,826)
Other	0	(285)
Net Cash Provided by (Used in) Investing Activities	(64,385)	(91,450)
Cash Flows from Financing Activities
Proceeds from issuance of long-term debt	58,576	80,391
Payment of long-term debt	(2,565)	(1,423)
Payment of debt issuance costs for long-term debt	(88)	0
Payment of debt component of tangible equity units	0	(4,818)
Payment of debt issuance costs for revolving credit facility	(564)	(542)
Receipts under short-term borrowings	80,000	30,000
Payments under short-term borrowings	(48,000)	(30,000)
Cash dividends	(11,486)	(10,724)
Proceeds from exercise of stock options and employee stock purchase plan	631	701
Payments to purchase and retire common stock	(873)	(398)
Net Cash Provided by (Used in) Financing Activities	75,631	63,187
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(22)	(88)
Cash and Cash Equivalents
Increase (decrease) in cash and cash equivalents during the period	8,645	2,318
Cash and cash equivalents balance, beginning of period	57,937	71,804
Cash and cash equivalents balance, end of period	66,582	74,122
Cash paid during the period for
Interest	16,426	12,065
Income taxes	7,999	6,280
Non-cash investing and financing activities
Contingent consideration assumed in acquisition	17,673	0
Dividends declared not yet paid	$ 5,718	$ 5,328