Annual report pursuant to Section 13 and 15(d)

Business and Summary of Significant Accounting Policies - Net Revenue (Details)

v3.22.0.1
Business and Summary of Significant Accounting Policies - Net Revenue (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disaggregation of Revenue [Line Items]    
Revenue, net $ 6,541 $ 2,404
Components    
Disaggregation of Revenue [Line Items]    
Revenue, net 5,504 2,263
Consumer Audio Products    
Disaggregation of Revenue [Line Items]    
Revenue, net $ 1,037 $ 141