Material accounting policies - Basic and diluted earnings per ordinary share - (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Material accounting policies | |||
| Profits attributable to Himax Technologies, Inc. stockholders | $ 43,937 | $ 79,755 | $ 50,616 |
| Denominator for basic earnings per ordinary share: | |||
| Weighted average number of ordinary shares outstanding | 349,034 | 349,593 | 348,990 |
| Basic earnings per ordinary share attributable to Himax Technologies, Inc. stockholders | $ 0.13 | $ 0.23 | $ 0.15 |
| Basic earnings per ADS attributable to Himax Technologies, Inc. stockholders | $ 0.25 | $ 0.46 | $ 0.29 |