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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 |  |

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