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Balance Sheet Components - Finite-lived intangible assets, future amortization expense (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Jan. 02, 2021 | Oct. 03, 2020
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross carrying amount | $ 7,914 |
Accumulated amortization | (2,039) |
Finite-lived intangible assets, net carrying value | 5,875 |
Intangible assets, gross carrying amount (excluding goodwill) | 28,014 |
Intangible assets, net carrying value (excluding goodwill) | $ 25,975 | $ 26,394
Weighted-average remaining life | 3 years 3 months 18 days |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |
Remainder of fiscal 2021 | $ 1,478 |
2022 | 1,955 |
2023 | 1,253 |
2024 | 1,020 |
2025 | 169 |
2026 and thereafter | 0 |
Finite-lived intangible assets, net carrying value | 5,875 |
In progress research and development |  |
Finite-Lived Intangible Assets [Line Items] |  |
Indefinite-lived intangible assets (excluding goodwill) | 20,100 |
Technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross carrying amount | 7,875 |
Accumulated amortization | (2,018) |
Finite-lived intangible assets, net carrying value | $ 5,857 |
Weighted-average remaining life | 3 years 3 months 21 days |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |
Finite-lived intangible assets, net carrying value | $ 5,857 |
Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross carrying amount | 39 |
Accumulated amortization | (21) |
Finite-lived intangible assets, net carrying value | $ 18 |
Weighted-average remaining life | 11 months 1 day |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |
Finite-lived intangible assets, net carrying value | $ 18 |

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