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Stock-Based Compensation- Additional Information (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2018 | Sep. 28, 2024 | Sep. 30, 2023 | Oct. 01, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Granted (in shares) |  | 0 | 0 | 0
Unrecognized stock-based compensation expense |  | $ 0 | $ 0 |
Stock options to purchase common stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  | 48 months |  |
Exercisable period |  | 10 years |  |
Restricted stock units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  | 4 years |  |
Unrecognized stock-based compensation expense |  | $ 115,400,000 | 111,600,000 |
Unrecognized stock-based compensation expense, period of recognition |  | 2 years 4 months 24 days |  |
Performance stock units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unrecognized stock-based compensation expense |  | $ 200,000 | $ 300,000 |
Unrecognized stock-based compensation expense, period of recognition |  | 1 year 6 months | 1 year 2 months 12 days |
Performance achievement adjustments (in shares) |  | 25,057 |  |
2018 Equity Incentive Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Percentage of outstanding stock maximum | 5.00% |  |  |
Shares reserved for future issuance (in shares) |  | 40,953,108 |  |

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