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Balance Sheet Components - Prepaid expenses and other current assets (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Prepaid insurance and other | $ 2,953 | $ 1,335
Net investments in sales type lease | 0 | 1,729
Vendor prepayments | 13,943 | 1,500
Customer deposit - noncash consideration | 0 | 1,158
Total | $ 16,896 | $ 5,722

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