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SIGNIFICANT BALANCE SHEET COMPONENTS - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
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Balance Sheet Related Disclosures [Abstract] |  |
Prepaid expenses | $ 433 | $ 1,200
Deposits | 34 | 46
Other current assets | 700 | 1,347
Total prepaid expenses and other current assets | $ 1,167 | $ 2,593

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