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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2016
Accounting Policies [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | Basic and diluted earnings per ordinary share have been calculated as follows:
|  | Year Ended December 31, |
|  | 2014 |  | 2015 |  | 2016 |
Net income attributable to Himax Technologies, Inc. stockholders (in thousands) |  | $ | 66,598 |  |  | 25,195 |  |  | 50,912 |
Denominator for basic earnings per ordinary share: |  |  |  |  |  |  |  |  |  |
Weighted average number of ordinary shares outstanding (in thousands) |  |  | 342,190 |  |  | 343,570 |  |  | 344,655 |
Basic earnings per ordinary share attributable to Himax Technologies, Inc. stockholders |  | $ | 0.19 |  |  | 0.07 |  |  | 0.15 |
|  | Year Ended December 31, |
|  | 2014 |  | 2015 |  | 2016 |
Net income attributable to Himax Technologies, Inc. stockholders (in thousands) |  | $ | 66,598 |  |  | 25,195 |  |  | 50,912 |
Denominator for diluted earnings per ordinary share: |  |  |  |  |  |  |  |  |  |
Weighted average number of ordinary shares outstanding (in thousands) |  |  | 342,190 |  |  | 343,570 |  |  | 344,655 |
Unvested RSUs (in thousands) |  |  | 1,807 |  |  | 562 |  |  | 69 |
|  |  | 343,997 |  |  | 344,132 |  |  | 344,724 |
Diluted earnings per ordinary share attributable to Himax Technologies, Inc. stockholders |  | $ | 0.19 |  |  | 0.07 |  |  | 0.15 |
Schedule Of Changes In Company Ownership Interests In Subsidiaries [Table Text Block] | The effects of changes in the Company’s ownership interests in its subsidiaries on Himax Technologies, Inc. equity are set forth as follows:
|  | Year Ended December 31, |
|  | 2014 |  | 2015 |  | 2016 |
|  | (in thousands) |
Net income attributable to Himax Technologies, Inc. stockholders |  | $ | 66,598 |  |  | 25,195 |  |  | 50,912 |
Transfers (to) from the noncontrolling interests: |  |  |  |  |  |  |  |  |  |
Increase in Himax Technologies, Inc.’s paid-in capital for sale of shares of subsidiaries |  |  | 131 |  |  | 32 |  |  | 9 |
Decrease in Himax Technologies, Inc.’s paid-in capital and retained earnings for purchase of shares of subsidiaries |  |  | (1,144) |  |  | (1,036) |  |  | (229) |
Change from net income attributable to Himax Technologies, Inc. stockholders and transfers from noncontrolling interests |  | $ | 65,585 |  |  | 24,191 |  |  | 50,692 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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