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GOODWILL AND INTANGIBLE ASSETS (Net intangible assets) (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Apr. 03, 2021 | Oct. 03, 2020
Schedule Of Intangible Assets [Line Items] |  |
Net intangible assets | $ 46,046 | $ 37,972
In Process Research and Development [Member] |  |
Schedule Of Intangible Assets [Line Items] |  |
Net intangible assets | 9,000 | 0
Developed technology [Member] |  |
Schedule Of Intangible Assets [Line Items] |  |
Gross intangible assets | 91,248 | 91,044
Accumulated amortization | (56,612) | (54,293)
Net intangible assets | 34,636 | 36,751
Customer relationships [Member] |  |
Schedule Of Intangible Assets [Line Items] |  |
Gross intangible assets | 36,355 | 36,307
Accumulated amortization | (36,355) | (35,587)
Net intangible assets | 0 | 720
Trade name [Member] |  |
Schedule Of Intangible Assets [Line Items] |  |
Gross intangible assets | 7,414 | 7,404
Accumulated amortization | (7,112) | (6,903)
Net intangible assets | 302 | 501
Other intangible assets [Member] |  |
Schedule Of Intangible Assets [Line Items] |  |
Gross intangible assets | 4,700 | 2,500
Accumulated amortization | (2,592) | (2,500)
Net intangible assets | $ 2,108 | $ 0
Minimum | Developed technology [Member] |  |
Schedule Of Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 7 years |
Minimum | Customer relationships [Member] |  |
Schedule Of Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 5 years |
Minimum | Trade name [Member] |  |
Schedule Of Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 7 years |
Minimum | Other intangible assets [Member] |  |
Schedule Of Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 1 year 10 months 24 days |
Maximum | Developed technology [Member] |  |
Schedule Of Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 15 years |
Maximum | Customer relationships [Member] |  |
Schedule Of Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 6 years |
Maximum | Trade name [Member] |  |
Schedule Of Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 8 years |
Maximum | Other intangible assets [Member] |  |
Schedule Of Intangible Assets [Line Items] |  |
Average estimated useful lives (in years) | 6 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 -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before 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 -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 + Details
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