Quarterly report pursuant to Section 13 or 15(d)

Business and Summary of Significant Accounting Policies - Schedule of net revenue (Details)

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Business and Summary of Significant Accounting Policies - Schedule of net revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Business and Summary of Significant Accounting Policies        
Revenue, net $ 425 $ 946 $ 894 $ 1,512
Components        
Business and Summary of Significant Accounting Policies        
Revenue, net 313 772 640 1,073
Consumer Audio Products        
Business and Summary of Significant Accounting Policies        
Revenue, net $ 112 $ 174 $ 254 $ 439