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Restructuring (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 28, 2020 | Mar. 30, 2019 | Mar. 28, 2020 | Mar. 30, 2019
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance Costs | $ 1,000,000.0 |  |  |
Restructuring Charges | 2,900,000 | $ 1,600,000 | $ 3,900,000 | $ 3,300,000
COVID-19 [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Estimated severance and benefits future costs | 1,000,000.0 |  |  |
Sunnyvale [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Estimated severance and benefits future costs | 1,300,000 |  |  |
Tepnel [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring Charges | 1,300,000 |  |  |
Cynosure |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring Reserve, Translation and Other Adjustment | 2,000,000.0 |  |  |
Share Based Compensation Expense Included Other Restructuring Costs | $ 2,600,000 |  |  |

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