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Allowance for Doubtful Accounts, Sales Returns and Discounts (Details 1) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Balance at beginning of year $ 929himx_AllowanceForSalesReturnsAndDiscountsCurrent $ 1,078himx_AllowanceForSalesReturnsAndDiscountsCurrent $ 785himx_AllowanceForSalesReturnsAndDiscountsCurrent
Additions 5,168himx_AllowanceForSaleReturnsAndDiscountsAdditions 7,272himx_AllowanceForSaleReturnsAndDiscountsAdditions 7,386himx_AllowanceForSaleReturnsAndDiscountsAdditions
Amounts utilized (5,229)himx_AllowanceForSaleReturnsAndDiscountsAmountsUtilized (7,421)himx_AllowanceForSaleReturnsAndDiscountsAmountsUtilized (7,093)himx_AllowanceForSaleReturnsAndDiscountsAmountsUtilized
Balance at end of year $ 868himx_AllowanceForSalesReturnsAndDiscountsCurrent $ 929himx_AllowanceForSalesReturnsAndDiscountsCurrent $ 1,078himx_AllowanceForSalesReturnsAndDiscountsCurrent