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Summary of Significant Accounting Policies (Details 1) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Basic and Diluted Earnings per Ordinary Share [Line Items]      
Net income attributable to Himax Technologies, Inc. stockholders (in thousands) $ 61,476 $ 51,596 $ 10,706
Denominator for basic earnings per ordinary share:      
Weighted average number of ordinary shares outstanding (in thousands) 340,423 341,056 353,771
Basic earnings per ordinary share attributable to Himax Technologies, Inc. stockholders (in dollars per share) $ 0.18 $ 0.15 $ 0.03