v3.26.1
BALANCE SHEET COMPONENTS - Schedule of property and equipment, net (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Property, Plant, and Equipment [Line Items]    
Accumulated depreciation and amortization $ (1,233) $ (1,171)
Property and equipment, net 348 410
Depreciable Property, Plant and Equipment    
Property, Plant, and Equipment [Line Items]    
Total in service 1,581 1,581
Research and development equipment    
Property, Plant, and Equipment [Line Items]    
Total in service 1,291 1,291
Office and computer equipment    
Property, Plant, and Equipment [Line Items]    
Total in service 84 84
Autos    
Property, Plant, and Equipment [Line Items]    
Total in service 54 54
Furniture and fixtures    
Property, Plant, and Equipment [Line Items]    
Total in service 47 47
Leasehold improvements    
Property, Plant, and Equipment [Line Items]    
Total in service $ 105 $ 105