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Equity (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Schedule of Capitalization, Equity [Line Items]    
Himax Taiwan, Ownership Percentage by Parent 100.00%  
Accumulated Legal and Special Reserve $ 71,447 $ 66,354
Percentage of annual net income set aside as legal reserve 10.00%  
Treasury Stock, Shares 12,692,064 12,884,058