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Background, Principal Activities and Basis of Presentation (Details)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Himax Technologies Limited [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities IC design and sales IC design and sales
Jurisdiction of Incorporation ROC ROC
Percentage of Ownership 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxTechnologiesLimitedMember		 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxTechnologiesLimitedMember
Himax Technologies Korea Ltd [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities Sales Sales
Jurisdiction of Incorporation South Korea South Korea
Percentage of Ownership 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxTechnologiesKoreaLtdMember		 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxTechnologiesKoreaLtdMember
Himax Technologies Japan Ltd. [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities Sales Sales
Jurisdiction of Incorporation Japan Japan
Percentage of Ownership 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxTechnologiesJapanLtdMember		 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxTechnologiesJapanLtdMember
Himax Semiconductor Inc [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities IC design and sales IC design and sales
Jurisdiction of Incorporation ROC ROC
Percentage of Ownership 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxSemiconductorIncMember		 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxSemiconductorIncMember
Himax Semiconductor (Hong Kong) Limited [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities Investments [1] Investments [1]
Jurisdiction of Incorporation Hong Kong [1] Hong Kong [1]
Percentage of Ownership 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxSemiconductorHongKongLimitedMember		 [1] 0.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxSemiconductorHongKongLimitedMember		 [1]
Himax Technologies (Samoa) Inc [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities Investments Investments
Jurisdiction of Incorporation Samoa Samoa
Percentage of Ownership 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxTechnologiesSamoaIncMember		 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxTechnologiesSamoaIncMember
Himax Technologies (Suzhou) Co Ltd [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities Sales and technical support Sales
Jurisdiction of Incorporation PRC PRC
Percentage of Ownership 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxTechnologiesSuzhouCoLtdMember		 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxTechnologiesSuzhouCoLtdMember
Himax Technologies (Shenzhen) Co Ltd [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities Sales and technical support Sales
Jurisdiction of Incorporation PRC PRC
Percentage of Ownership 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxTechnologiesShenzhenCoLtdMember		 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxTechnologiesShenzhenCoLtdMember
Himax Display Inc [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities LCOS and MEMS design, manufacturing and sales LCOS and MEMS design, manufacturing and sales
Jurisdiction of Incorporation ROC ROC
Percentage of Ownership 76.65%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxDisplayIncMember		 76.70%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxDisplayIncMember
Integrated Microdisplays Limited [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities LCOS sales LCOS sales
Jurisdiction of Incorporation Hong Kong Hong Kong
Percentage of Ownership 76.65%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_IntegratedMicrodisplaysLtdMember		 76.70%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_IntegratedMicrodisplaysLtdMember
Himax Display (USA) Inc [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities MEMS design MEMS design
Jurisdiction of Incorporation Delaware, USA Delaware, USA
Percentage of Ownership 76.65%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxDisplayUsaIncMember		 76.70%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxDisplayUsaIncMember
Himax Analogic Inc [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities IC design and sales IC design and sales
Jurisdiction of Incorporation ROC ROC
Percentage of Ownership 83.18%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxAnalogicIncMember		 83.17%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxAnalogicIncMember
Himax Imaging Inc [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities Investments Investments
Jurisdiction of Incorporation Cayman Islands Cayman Islands
Percentage of Ownership 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxImagingIncMember		 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxImagingIncMember
Himax Imaging Ltd [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities IC design and sales IC design and sales
Jurisdiction of Incorporation ROC ROC
Percentage of Ownership 87.95%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxImagingLtdMember		 88.07%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxImagingLtdMember
Himax Imaging Corp [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities IC design IC design
Jurisdiction of Incorporation California, USA California, USA
Percentage of Ownership 87.95%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxImagingCorpMember		 88.07%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxImagingCorpMember
Argo Limited [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities Investments [2] Investments [2]
Jurisdiction of Incorporation Cayman Islands [2] Cayman Islands [2]
Percentage of Ownership 0.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_ArgoLimitedMember		 [2] 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_ArgoLimitedMember		 [2]
Tellus Limited [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities Investments [2] Investments [2]
Jurisdiction of Incorporation Cayman Islands [2] Cayman Islands [2]
Percentage of Ownership 0.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_TellusLimitedMember		 [2] 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_TellusLimitedMember		 [2]
Himax Media Solutions Inc [Member]    
Subsidiary or Equity Method Investee [Line Items]    
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 98.85%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxMediaSolutionsIncMember		 92.37%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxMediaSolutionsIncMember
Himax Media Solutions (Hong Kong) Limited [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities Investments [2] Investments [2]
Jurisdiction of Incorporation Hong Kong [2] Hong Kong [2]
Percentage of Ownership 0.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxMediaSolutionsHongKongLimitedMember		 [2] 0.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HimaxMediaSolutionsHongKongLimitedMember		 [2]
Harvest Investment Limited [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities Investments Investments
Jurisdiction of Incorporation ROC ROC
Percentage of Ownership 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HarvestInvestmentLimitedMember		 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_HarvestInvestmentLimitedMember
Iris Optronics Co Ltd [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Main activities E-paper manufacturing and sales [3] E-paper manufacturing and sales [3]
Jurisdiction of Incorporation ROC [3] ROC [3]
Percentage of Ownership 0.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_IrisOptronicsCoLtdMember		 [3] 0.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= himx_IrisOptronicsCoLtdMember		 [3]
[1] Himax Semiconductor (Hong Kong) Limited was newly incorporated on January 6, 2014, which is wholly owned by Himax Technologies, Inc.
[2] Argo Limited, Tellus Limited and Himax Media Solutions (Hong Kong) Limited were deregistered and dissolved on July 29, 2014, July 29, 2014 and October 25, 2013, respectively.
[3] Iris Optronics Co., Ltd. (“Iris”) was incorporated on May 18, 2012 and the paid-in capital was $153 thousand. The Company initially had a controlling financial interest in Iris because it had a majority voting interest at Iris board of directors. As a result, Iris was included in the Company’s consolidated financial statements since that date. On October 7, 2013, the Company no longer had a majority voting interest at Iris board of directors level, but still has the ability to exercise significant influence over the operating and financial policies of Iris. Therefore, the Company ceased consolidating Iris in its consolidated financial statements and now accounts for its investment in Iris using the equity method. The Company re-measured its investment in Iris at fair value due to the change in control and recognized a re-measurement gain.