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
Mar. 31, 2023
Mar. 31, 2022
Business and Summary of Significant Accounting Policies    
Revenue, net $ 469 $ 566
Components    
Business and Summary of Significant Accounting Policies    
Revenue, net 327 301
Consumer Audio Products    
Business and Summary of Significant Accounting Policies    
Revenue, net $ 142 $ 265