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Balance Sheet Components - Schedule of Property and Equipment (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Property, Plant and Equipment [Line Items]    
Total property and equipment, gross $ 18,342 $ 41,501
Less: accumulated depreciation and amortization (14,501) (35,657)
Total property and equipment, net 3,841 5,844
Machinery and equipment    
Property, Plant and Equipment [Line Items]    
Total property and equipment, gross 1,148 2,761
Software and software development    
Property, Plant and Equipment [Line Items]    
Total property and equipment, gross 2,176 2,858
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Total property and equipment, gross 1,266 1,679
Tooling    
Property, Plant and Equipment [Line Items]    
Total property and equipment, gross 10,190 14,062
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Total property and equipment, gross 1,177 2,323
Demonstration units and convention booths    
Property, Plant and Equipment [Line Items]    
Total property and equipment, gross $ 2,385 $ 17,818