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GOODWILL AND INTANGIBLE ASSETS (Net intangible assets) (Details) - USD ($) $ in Thousands | Sep. 28, 2024 | Sep. 30, 2023
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross intangible assets | $ 134,374 | $ 130,929
Finite-Lived Intangible Assets, Accumulated Amortization | (109,135) | (101,572)
Net intangible assets | 25,239 | 29,357
In-process research and development |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross intangible assets | 459 | 459
Finite-Lived Intangible Assets, Accumulated Amortization | 0 | 0
Net intangible assets | 459 | 459
Developed technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross intangible assets | 83,401 | 80,959
Finite-Lived Intangible Assets, Accumulated Amortization | (61,575) | (55,877)
Net intangible assets | 21,826 | 25,082
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross intangible assets | 37,625 | 36,764
Finite-Lived Intangible Assets, Accumulated Amortization | (35,916) | (34,789)
Net intangible assets | 1,709 | 1,975
Trade and brand name |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross intangible assets | 7,272 | 7,130
Finite-Lived Intangible Assets, Accumulated Amortization | (7,272) | (7,130)
Net intangible assets | 0 | 0
Other intangible assets |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross intangible assets | 5,617 | 5,617
Finite-Lived Intangible Assets, Accumulated Amortization | (4,372) | (3,776)
Net intangible assets | $ 1,245 | $ 1,841
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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