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Background, Principal Activities and Basis of Presentation (Details)
 12 Months Ended
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.