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INCOME TAXES (Effective income tax rate reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Oct. 01, 2022
Income Tax Disclosure [Abstract]
Expected income tax provision based on the U.S. federal statutory tax rate	$ (12,255)	$ 15,162	$ 100,212
Effect of earnings of foreign subsidiaries subject to different tax rates	(3,619)	(8,448)	(17,936)
Benefit from tax incentives	980	(11,198)	(50,113)
Benefit from research and development tax credits	(4,132)	(4,038)	(2,995)
Benefit from foreign tax credits	(1,505)	(7,834)	(26,021)
Valuation allowance	18,543	3,127	(5,830)
Foreign operations (Deemed income, taxes on undistributed foreign earnings, and withholding taxes)	7,268	24,450	45,421
Non-deductible items(1)	3,622	1,900	267
Goodwill impairment	0	2,517	0
Other, net	1,749	(585)	438
Provision for income taxes	$ 10,651	$ 15,053	$ 43,443
Effective tax rate	(18.30%)	20.80%	9.10%

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