GOODWILL AND INTANGIBLE ASSETS (Net intangible assets) (Details) - USD ($) $ in Thousands	Apr. 04, 2026	Oct. 04, 2025
Schedule Of Intangible Assets [Line Items]
Gross carrying amount	$ 69,568	$ 69,568
Accumulated amortization	(64,584)	(63,968)
Net amount	4,984	5,600
In-process research and development
Schedule Of Intangible Assets [Line Items]
Gross carrying amount	459	459
Accumulated amortization	0	0
Net amount	459	459
Developed technology
Schedule Of Intangible Assets [Line Items]
Gross carrying amount	37,461	37,461
Accumulated amortization	(34,842)	(34,576)
Net amount	$ 2,619	2,885
Developed technology \| Minimum
Schedule Of Intangible Assets [Line Items]
Average estimated useful lives (in years)	7 years
Developed technology \| Maximum
Schedule Of Intangible Assets [Line Items]
Average estimated useful lives (in years)	8 years
Customer relationships
Schedule Of Intangible Assets [Line Items]
Gross carrying amount	$ 21,430	21,430
Accumulated amortization	(20,121)	(19,988)
Net amount	$ 1,309	1,442
Customer relationships \| Minimum
Schedule Of Intangible Assets [Line Items]
Average estimated useful lives (in years)	5 years
Customer relationships \| Maximum
Schedule Of Intangible Assets [Line Items]
Average estimated useful lives (in years)	8 years
Trade and brand name
Schedule Of Intangible Assets [Line Items]
Gross carrying amount	$ 4,600	4,600
Accumulated amortization	(4,600)	(4,600)
Net amount	$ 0	0
Trade and brand name \| Maximum
Schedule Of Intangible Assets [Line Items]
Average estimated useful lives (in years)	8 years
Other intangible assets
Schedule Of Intangible Assets [Line Items]
Gross carrying amount	$ 5,618	5,618
Accumulated amortization	(5,021)	(4,804)
Net amount	$ 597	$ 814
Other intangible assets \| Minimum
Schedule Of Intangible Assets [Line Items]
Average estimated useful lives (in years)	1 year
Other intangible assets \| Maximum
Schedule Of Intangible Assets [Line Items]
Average estimated useful lives (in years)	8 years