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Balance Sheet Components - Schedule of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Accrued liabilities    
Payroll-related expenses $ 1,578 $ 1,606
Inventory 199 157
Other 476 686
Total accrued liabilities $ 2,253 $ 2,449