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Balance Sheet Components - Goodwill and Intangible Assets, Net (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |
Finite-lived assets, net of accumulated amortization of $639 and $61, respectively | $ 41,871 | $ 2,368 |
Accumulated amortization | 639 | 61 |
Goodwill | 943 | 943 |
Indefinite-lived assets - IPR&D | 28,859 | 2,620 |
Total Goodwill and intangible assets, net | 71,673 | 5,931 |
Finite-Lived Intangible Asset, Expected Amortization, for Each of Five Succeeding Fiscal Years | $ 3,800 |  |
Remaining life of the finite-lived assets | 11 years 4 months 24 days |  |
Impairment of intangible assets | $ 0 | 0 | $ 0
Impairment of goodwill | 0 | $ 0 | $ 0
Upfront And Milestone Payment | $ 25,000 |  |

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