Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Cash flows from operating activities
Net income	$ 117,479	$ 108,616	$ 13,040
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	56,690	52,206	48,296
Deferred income taxes	(3,583)	(9,764)	20,388
Share-based compensation expense	24,280	21,335	17,981
Provision for allowance for doubtful accounts	2,405	0	0
Asset impairment charges	3,052	0	0
Other, net	1,358	204	(196)
Changes in operating assets and liabilities, excluding impacts of acquisition:
Accounts receivable	8,796	(96,694)	(30,706)
Contract assets	(22,488)	(14,526)	0
Inventories	(56,420)	18,798	(140,615)
Other current and noncurrent assets	3,343	(3,728)	(19,168)
Accrued income taxes payable	(9,570)	4,125	53,504
Accounts payable	65,097	(56,724)	93,342
Customer deposits	18,864	49,652	(16,713)
Other current and noncurrent liabilities	1,065	41,800	27,678
Cash flows provided by operating activities	210,368	115,300	66,831
Cash flows from investing activities
Payments for property, plant and equipment	(50,088)	(90,600)	(62,780)
Proceeds from sales of property, plant and equipment	437	261	538
Business acquisition	0	1,180
Business acquisition			(12,379)
Other, net	(200)	(200)	0
Cash flows used in investing activities	(49,851)	(89,359)	(74,621)
Cash flows from financing activities
Borrowings under debt agreements	679,042	1,084,500	834,341
Payments on debt and finance lease obligations	(638,298)	(993,588)	(970,258)
Debt issuance costs	(699)	(603)	(729)
Repurchases of common stock	(41,392)	(182,109)	(137,034)
Proceeds from exercise of stock options	12,827	2,614	13,699
Payments related to tax withholding for share-based compensation	(12,938)	(8,033)	(5,482)
Cash flows used in financing activities	(1,458)	(97,219)	(265,463)
Effect of exchange rate changes on cash and cash equivalents	2,581	(154)	1,685
Net increase (decrease) in cash and cash equivalents and restricted cash	161,640	(71,432)	(271,568)
Cash and cash equivalents and restricted cash:
Beginning of period	226,254	297,686	569,254
End of period	387,894	226,254	297,686
Supplemental disclosure information:
Interest Paid, net	14,885	15,701	12,030
Income taxes paid	$ 31,458	$ 26,277	$ 18,891