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Fair Value Measurements (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Investments in Non-marketable Equity Securities	$ 11,211us-gaap_CostMethodInvestments	$ 21,877us-gaap_CostMethodInvestments
Impairment loss on investment	309us-gaap_ImpairmentOfInvestments	0us-gaap_ImpairmentOfInvestments	1,299us-gaap_ImpairmentOfInvestments
Eturbotouch Technology Inc [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Investments in Non-marketable Equity Securities			477us-gaap_CostMethodInvestments / dei_LegalEntityAxis = himx_EturbotouchTechnologyIncMember
Impairment loss on investment			238us-gaap_ImpairmentOfInvestments / dei_LegalEntityAxis = himx_EturbotouchTechnologyIncMember
Oculon Optoelectronics Inc [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Investments in Non-marketable Equity Securities	0us-gaap_CostMethodInvestments / dei_LegalEntityAxis = himx_OculonOptoelectronicsIncMember
Impairment loss on investment	309us-gaap_ImpairmentOfInvestments / dei_LegalEntityAxis = himx_OculonOptoelectronicsIncMember
Fair Value, Inputs, Level 1 [Member] | Eturbotouch Technology Inc [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Investments in Non-marketable Equity Securities			0us-gaap_CostMethodInvestments / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / dei_LegalEntityAxis = himx_EturbotouchTechnologyIncMember
Fair Value, Inputs, Level 1 [Member] | Oculon Optoelectronics Inc [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Investments in Non-marketable Equity Securities	0us-gaap_CostMethodInvestments / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / dei_LegalEntityAxis = himx_OculonOptoelectronicsIncMember
Fair Value, Inputs, Level 2 [Member] | Eturbotouch Technology Inc [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Investments in Non-marketable Equity Securities			0us-gaap_CostMethodInvestments / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / dei_LegalEntityAxis = himx_EturbotouchTechnologyIncMember
Fair Value, Inputs, Level 2 [Member] | Oculon Optoelectronics Inc [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Investments in Non-marketable Equity Securities	0us-gaap_CostMethodInvestments / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / dei_LegalEntityAxis = himx_OculonOptoelectronicsIncMember
Fair Value, Inputs, Level 3 [Member] | Eturbotouch Technology Inc [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Investments in Non-marketable Equity Securities			477us-gaap_CostMethodInvestments / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / dei_LegalEntityAxis = himx_EturbotouchTechnologyIncMember
Fair Value, Inputs, Level 3 [Member] | Oculon Optoelectronics Inc [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Investments in Non-marketable Equity Securities	$ 0us-gaap_CostMethodInvestments / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / dei_LegalEntityAxis = himx_OculonOptoelectronicsIncMember

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- Definition

Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 325

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6872867&loc=d3e40691-111596



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 325

-SubTopic 20

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-Paragraph 2

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The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



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-Name Accounting Standards Codification

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