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Equity Method Investments (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Oct. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Statement [line items]      
Carrying amount   $ 3,490 $ 6,533
Holding   100.00%  
Ganzin Technology Corp.      
Statement [line items]      
Principal Activities   Eye tracking chip and module  
Place of Incorporation and Operation   Taipei, Taiwan  
Holding   32.21% 35.72%
Iris Optronics Co Ltd      
Statement [line items]      
Principal Activities   E-paper manufacturing and sales  
Place of Incorporation and Operation   Tainan, Taiwan  
Carrying amount   $ 303 $ 315
Holding   4.52% 4.93%
Viewsil Microelectronics (Kunshan) Limited      
Statement [line items]      
Principal Activities   IC design and sales  
Place of Incorporation and Operation   Kunshan, China  
Carrying amount     $ 2,635
Holding   0.00% 49.00%
Guangzhou Pixtalks Information Technology Co Ltd      
Statement [line items]      
Principal Activities   3D structured light module  
Place of Incorporation and Operation   Guangzhou, China  
Carrying amount   $ 153 $ 285
Holding   29.50% 29.50%
Prilit Optronics, Inc      
Statement [line items]      
Principal Activities   LCD panel components manufacturing  
Place of Incorporation and Operation   Tainan, Taiwan  
Carrying amount   $ 3,034 $ 3,298
Holding   14.95% 15.00%
Original investment amount $ 3,264