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Reportable Segments, Geographic Information and Major Customers - Narrative (Details) $ in Thousands | 12 Months Ended
--- | ---
Oct. 02, 2021 USD ($) segment | Oct. 03, 2020 USD ($) | Sep. 28, 2019 USD ($)
Segment Reporting [Abstract] |  |  |
Restructuring and impairment charges | $ 3,267 | $ 6,003 | $ 1,678
Number of reportable segments | segment | 3 |  |
Other long-term assets, operating lease right-of-use assets, deferred income tax assets and intangible assets | $ 63,800 | $ 57,100 |
Customer Concentration Risk | General Electric Company ("GE") | Accounts Receivable |  |  |
Concentration Risk [Line Items] |  |  |
Percentage of concentration risk | 12.10% | 15.70% |

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