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Balance Sheet Components - Prepaid and Other Current Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Prepaid expense | $ 2,119 | $ 370
Deferred issuance costs | 0 | 3,710
Costs-share receivables | 600 | 126
Accrued interest receivable | 1,138 | 0
Rent security | 143 | 0
Refundable deposit | 125 | 125
Total prepaid and other current assets | $ 4,125 | $ 4,331

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