Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jul. 01, 2022	Oct. 01, 2021
Assets, Current [Abstract]
Cash and cash equivalents	$ 132,170	$ 156,537
Short-term investments	404,169	188,365
Accounts Receivable, after Allowance for Credit Loss, Current	106,594	84,570
Inventories	110,228	82,699
Prepaid and other current assets	12,344	9,365
Total current assets	765,505	521,536
Property and equipment, net	122,498	120,526
Goodwill	311,958	314,240
Intangible assets, net	59,289	84,685
Deferred income taxes	37,519	39,516
Other investments	2,500	15,342
Other long-term assets	33,801	38,300
Total assets	1,333,070	1,134,145
Current liabilities:
Finance lease liabilities	977	958
Accounts payable	42,725	28,712
Accrued liabilities	57,731	63,374
Total current liabilities	101,433	93,044
Finance lease liabilities	27,292	28,037
Financing obligation	9,544	8,720
Long-term debt	565,509	492,097
Other long-term liabilities	33,652	40,511
Total liabilities	737,430	662,409
Stockholders’ equity:
Common stock	70	69
Treasury stock, at cost	(330)	(330)
Accumulated other comprehensive income	(2,766)	4,150
Additional paid-in capital	1,192,288	1,269,601
Accumulated deficit	(593,622)	(801,754)
Total stockholders’ equity	595,640	471,736
Total liabilities and stockholders' equity	$ 1,333,070	$ 1,134,145