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The Company and Summary of Significant Accounting Policies - Autonomous Security Robots, Net - Depreciation Expense (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Depreciation expense of finished ASRs $ 0.5 $ 0.5 $ 1.5 $ 1.5