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 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Business and Summary of Significant Accounting Policies        
Revenue, net $ 769 $ 937 $ 1,663 $ 2,449
Components        
Business and Summary of Significant Accounting Policies        
Revenue, net 258 696 899 1,769
Consumer Audio Products        
Business and Summary of Significant Accounting Policies        
Revenue, net $ 511 $ 241 $ 764 $ 680