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GOODWILL AND INTANGIBLE ASSETS (Net intangible assets) (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Oct. 01, 2022
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Net intangible assets | $ 29,357 | $ 31,939
In-process research and development |  |
Finite-Lived Intangible Assets [Line Items] |  |
Net intangible assets | 459 | 0
Developed technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross intangible assets | 80,959 | 89,017
Accumulated amortization | (55,877) | (58,636)
Impairment charges | (6,900) |
Net intangible assets | 25,082 | 30,381
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross intangible assets | 36,764 | 33,515
Accumulated amortization | (34,789) | (33,515)
Net intangible assets | 1,975 | 0
Trade and brand name |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross intangible assets | 7,130 | 6,945
Accumulated amortization | (7,130) | (6,945)
Net intangible assets | 0 | 0
Other intangible assets |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross intangible assets | 5,617 | 4,700
Accumulated amortization | (3,776) | (3,142)
Net intangible assets | $ 1,841 | $ 1,558
Minimum | Developed technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 6 years |
Minimum | Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 5 years |
Minimum | Trade and brand name |  |
Finite-Lived Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 7 years |
Minimum | Other intangible assets |  |
Finite-Lived Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 1 year |
Maximum | Developed technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 15 years |
Maximum | Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 8 years |
Maximum | Trade and brand name |  |
Finite-Lived Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 8 years |
Maximum | Other intangible assets |  |
Finite-Lived Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 8 years |

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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