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Revenue - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Revenue from External Customer [Line Items]        
Revenues $ 8,771 $ 9,527 $ 24,115 $ 34,116
IC sales        
Revenue from External Customer [Line Items]        
Revenues 8,531 9,470 23,622 33,273
IC sales | Home And Enterprise Market        
Revenue from External Customer [Line Items]        
Revenues 7,404 7,504 20,136 20,080
IC sales | Mobile Market        
Revenue from External Customer [Line Items]        
Revenues 1,127 1,966 3,486 13,193
Engineering services, license and other        
Revenue from External Customer [Line Items]        
Revenues $ 240 $ 57 $ 493 $ 843