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Equity - Noncontrolling interest (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Equity |  |  |
Balance at the beginning of year | $ 2,258 | $ 5,023 | $ (1,743)
Equity attributable to non-controlling interests |  |  |
Loss for the year | (1,515) | (2,961) | (1,974)
Changes in fair value of financial assets | 10 | (2) | (2)
Remeasurement of defined benefit pension plans | 26 | 5 | (1)
Share-based compensation expenses | 140 | 38 | 8
New shares issued by subsidiary | 445 | 0 | 8,695
Purchase of subsidiary shares from noncontrolling interests | 0 | 175 |
Effect of Himax Media Solutions, Inc. merged into Himax Taiwan | (197) | 0 |
Disposal of financial assets at fair value through other comprehensive income | (6) | 0 |
Exchange differences arising on translation of foreign operations | 88 | 0 | 44
Declaration of cash dividends | 0 | (20) | (4)
Balance at the end of year | $ 1,249 | $ 2,258 | $ 5,023

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