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Balance Sheet Components - Intangible assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets, gross | $ 19,455 | $ 19,455 |
Less accumulated amortization | (9,674) | (6,314) |
Intangible assets, net (excluding goodwill) | 9,781 | 13,141 |
Goodwill | 269 | 269 |
Intangible assets, net | 10,050 | 13,410 |
Amortization expense | 3,400 | 3,400 | $ 100
Patents and exclusive technology rights |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets, gross | $ 18,037 | 18,037 |
Finite-lived intangible asset, useful life | 5 years |  |
Trade name |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets, gross | $ 268 | 268 |
Finite-lived intangible asset, useful life | 10 years |  |
Customer relationships |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets, gross | $ 1,150 | $ 1,150 |

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