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Material accounting policies - Calculation of diluted earnings per ordinary share based on treasury stock method (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Material accounting policies |  |  |
Profits attributable to Himax Technologies, Inc. stockholders | $ 79,755 | $ 50,616 | $ 236,982
Denominator for diluted earnings per ordinary share: |  |  |
Weighted average number of ordinary shares outstanding | 349,593 | 348,990 | 349,448
Unvested RSUs | 434 | 576 | 187
Adjusted weighted average number of ordinary shares outstanding | 350,027 | 349,566 | 349,635
Diluted earnings per ordinary share attributable to Himax Technologies, Inc. stockholders | $ 0.23 | $ 0.14 | $ 0.68
Diluted earnings per ADS attributable to Himax Technologies, Inc. stockholders | $ 0.46 | $ 0.29 | $ 1.36
Weighted Average Basic Number of ADS Equivalent Outstanding | 174,796 | 174,495 | 174,724
Weighted Average Diluted Number of ADS Equivalent Outstanding | 175,014 | 174,783 | 174,817

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- Definition The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2024-01-01 -Paragraph 66 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2024-en-r&anchor=para_66&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2024-01-01 -Paragraph 67 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2024-en-r&anchor=para_67&doctype=Standard -URIDate 2024-03-27 + Details
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