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Balance Sheet Details - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Cash and Cash Equivalents [Line Items] |  |  |
Adjusted Cost | $ 65,116 | $ 113,984 | $ 116,797
Prepaid expense, current | 4,600 | 4,800 |
Other assets, current | 600 | 700 |
Asset impairment charges | 1,500 |  |
Goodwill impairment | 778 | 0 |
Goodwill | 2,463 | 3,241 | $ 3,241
San Carlos |  |  |
Cash and Cash Equivalents [Line Items] |  |  |
Asset impairment charges | 7,700 |  |
Impairment of leasehold | 4,700 |  |
Money market funds |  |  |
Cash and Cash Equivalents [Line Items] |  |  |
Adjusted Cost | 56,374 | 77,309 |
Estimated Fair Value | 56,374 | 77,309 |
Cash |  |  |
Cash and Cash Equivalents [Line Items] |  |  |
Adjusted Cost | $ 8,700 | $ 36,700 |

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