Accounts Receivable, net (Details 3) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Balance at Beginning of year	$ 0	$ 1,395
Charges to earnings	290	155
Amounts utilized / write-offs	0	(1,550)
Balance at end of year	$ 290	$ 0

Represents amount of loss allowance in accordance with trade and other receivable

No definition available.

Name:	himx_LossAllowanceTradeAndOtherReceivableBeginningBalance
Namespace Prefix:	himx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant