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BALANCE SHEET COMPONENTS - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
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Balance Sheet Related Disclosures [Abstract] |  |
Research and development | $ 1,253 | $ 2,067
Insurance | 71 | 446
Other prepaids | 419 | 293
Other current assets | 1,079 | 2,054
Prepaid expenses and other assets | $ 2,822 | $ 4,860

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