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Background, Principal Activities and Basis of Presentation (Details) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011
Himax Technologies Limited [Member] |  |  |  |
Main activities | IC design and sales |  | IC design and sales |
Jurisdiction of Incorporation | ROC |  | ROC |
Percentage of Ownership | 100.00% |  | 100.00% |
Himax Technologies Korea Ltd [Member] |  |  |  |
Main activities | Sales |  | Sales |
Jurisdiction of Incorporation | South Korea |  | South Korea |
Percentage of Ownership | 100.00% |  | 100.00% |
Himax Semiconductor Inc [Member] |  |  |  |
Main activities | IC design and sales |  | IC design and sales |
Jurisdiction of Incorporation | ROC |  | ROC |
Percentage of Ownership | 100.00% |  | 100.00% |
Himax Technologies (Samoa) Inc [Member] |  |  |  |
Main activities | Investments |  | Investments |
Jurisdiction of Incorporation | Samoa |  | Samoa |
Percentage of Ownership | 100.00% |  | 100.00% |
Himax Technologies (Suzhou) Co Ltd [Member] |  |  |  |
Main activities | Sales |  | Sales |
Jurisdiction of Incorporation | PRC |  | PRC |
Percentage of Ownership | 100.00% |  | 100.00% |
Himax Technologies (Shenzhen) Co Ltd [Member] |  |  |  |
Main activities | Sales |  | Sales |
Jurisdiction of Incorporation | PRC |  | PRC |
Percentage of Ownership | 100.00% |  | 100.00% |
Himax Display Inc [Member] |  |  |  |
Main activities | LCOS and MEMS design, manufacturing and sales |  | LCOS and MEMS design, manufacturing and sales |
Jurisdiction of Incorporation | ROC |  | ROC |
Percentage of Ownership | 81.53% |  | 88.02% |
Integrated Microdisplays Limited [Member] |  |  |  |
Main activities | LCOS sales |  | LCOS sales |
Jurisdiction of Incorporation | Hong Kong |  | Hong Kong |
Percentage of Ownership | 81.53% |  | 88.02% |
Himax Display US Corp [Member] |  |  |  |
Main activities | Investments | [1] | Investments | [1]
Jurisdiction of Incorporation | Delaware, USA | [1] | Delaware, USA | [1]
Percentage of Ownership | 0.00% | [1] | 88.02% | [1]
Himax Display (USA) Inc [Member] |  |  |  |
Main activities | MEMS design | [2] | MEMS design | [2]
Jurisdiction of Incorporation | Delaware, USA | [2] | Delaware, USA | [2]
Percentage of Ownership | 81.53% | [2] | 0.00% | [2]
Himax Analogic Inc [Member] |  |  |  |
Main activities | IC design and sales |  | IC design and sales |
Jurisdiction of Incorporation | ROC |  | ROC |
Percentage of Ownership | 74.60% |  | 75.10% |
Himax Imaging Inc [Member] |  |  |  |
Main activities | Investments |  | Investments |
Jurisdiction of Incorporation | Cayman Islands |  | Cayman Islands |
Percentage of Ownership | 100.00% |  | 100.00% |
Himax Imaging Ltd [Member] |  |  |  |
Main activities | IC design and sales |  | IC design and sales |
Jurisdiction of Incorporation | ROC |  | ROC |
Percentage of Ownership | 87.95% |  | 89.69% |
Himax Imaging Corp [Member] |  |  |  |
Main activities | IC design |  | IC design |
Jurisdiction of Incorporation | California, USA |  | California, USA |
Percentage of Ownership | 100.00% |  | 100.00% |
Argo Limited [Member] |  |  |  |
Main activities | Investments |  | Investments |
Jurisdiction of Incorporation | Cayman Islands |  | Cayman Islands |
Percentage of Ownership | 100.00% |  | 100.00% |
Tellus Limited [Member] |  |  |  |
Main activities | Investments |  | Investments |
Jurisdiction of Incorporation | Cayman Islands |  | Cayman Islands |
Percentage of Ownership | 100.00% |  | 100.00% |
Himax Media Solutions Inc [Member] |  |  |  |
Main activities | TFT-LCD television, monitor chipset operations, ASIC service and IP licensing |  | TFT-LCD television, monitor chipset operations, ASIC service and IP licensing |
Jurisdiction of Incorporation | ROC |  | ROC |
Percentage of Ownership | 78.28% |  | 78.25% |
Himax Media Solutions (Hong Kong) Limited [Member] |  |  |  |
Main activities | Investments |  | Investments |
Jurisdiction of Incorporation | Hong Kong |  | Hong Kong |
Percentage of Ownership | 78.28% |  | 78.25% |
Harvest Investment Limited [Member] |  |  |  |
Main activities | Investments |  | Investments |
Jurisdiction of Incorporation | ROC |  | ROC |
Percentage of Ownership | 100.00% |  | 100.00% |
Iris Optronics Co Ltd [Member] |  |  |  |
Main activities | E-paper manufacturing and sales | [3] | E-paper manufacturing and sales | [3]
Jurisdiction of Incorporation | ROC | [3] | ROC | [3]
Percentage of Ownership | 22.22% | [3] | 0.00% | [3]
[1] | Himax Display US Corp., a holding company was newly incorporated in May 12, 2011, which was wholly owned by Himax Display, Inc. and merged with Spatial Photonics, Inc. on July 3, 2012. (see Note 3, "Acquisition", for additional information)
[2] | Spatial Photonics, Inc. has renamed as Himax Display (USA) Inc. on July 3, 2012.
[3] | Iris Optronics Co., Ltd. ("Iris") was newly incorporated on May 18, 2012 and the paid-in capital was $153 thousand. The Company is initially able to exercise control over the daily operating and financial decisions of Iris. As a result, Iris is included in the consolidated financial statements since established date.

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