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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Oct. 01, 2023 | Oct. 02, 2022 | Oct. 03, 2021 | Sep. 27, 2020
Operating Loss Carryforwards [Line Items] |  |  |  |
Effective tax rate | 31.80% | 24.50% | 12.80% |
Non-operating income tax expense | $ 20,600 |  |  |
Deferred tax liabilities for undistributed foreign earnings | 1,453 | $ 2,200 |  |
Reduction in income tax expense due to excess tax benefits on share-based payments | $ 4,600 | $ 10,300 | $ 12,900 |
Effective tax rates, excluding valuation allowance release, non-deductible goodwill impairment charge, transaction costs, and excess tax benefits on share-based payments | 27.80% | 27.50% | 25.70% |
Valuation allowance | $ 11,663 | $ 12,286 |  |
Unrecognized tax benefits | 53,619 | 8,908 | $ 12,899 | $ 9,228
Accrual of additional interest and penalties | 4,600 | 500 | 800 |
Reduction in accrued interest and penalties | 2,000 | 400 | 0 |
Amount of interest and penalties accrued | 8,000 | $ 5,300 | 5,200 |
Canada |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Foreign earnings repatriated |  |  | 80,000 |
Tax expense related to repatriation of foreign earnings |  |  | 5,600 |
Undistributed foreign earnings no longer indefinitely reinvested |  |  | 20,100 |
Deferred tax liabilities for undistributed foreign earnings |  |  | 3,100 |
Federal |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Net operating loss carry forwards which have no expiration date | 37,500 |  |  |
Foreign |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Tax benefit primarily consisting of valuation allowances |  |  | $ 21,600 |
Net operating loss carry forwards which have no expiration date | 149,700 |  |  |
Net operating loss carry forwards which expire at various dates | 21,100 |  |  |
Net operating loss carryforwards | 170,800 |  |  |
Capital loss carryforwards | 18,400 |  |  |
Interest restriction allowances | 6,200 |  |  |
Research and development credits | 4,500 |  |  |
State |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Net operating loss carry forwards which expire at various dates | $ 26,000 |  |  |

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