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Segments, Geographical Information, Concentrations and Significant Customers - Revenue by geography (Details) - Revenue - Single reportable segment - Revenue from Rights Concentration Risk - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Segments, Geographical Information, Concentrations and Significant Customers        
Total revenue $ 1,947 $ 2,378 $ 5,220 $ 8,516
United States        
Segments, Geographical Information, Concentrations and Significant Customers        
Total revenue 1,260 1,548 2,612 5,688
Europe        
Segments, Geographical Information, Concentrations and Significant Customers        
Total revenue $ 687 767 2,471 2,241
Asia and others        
Segments, Geographical Information, Concentrations and Significant Customers        
Total revenue   $ 63 $ 137 $ 587