Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

+ Details

Name:	himx_IfrsStatementLineItems
Namespace Prefix:	himx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of lifetime expected credit loss allowance

+ References

No definition available.

+ Details

Name:	himx_LifetimeExpectedCreditLosses
Namespace Prefix:	himx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The rate of expected credit losses, calculated as percentage of the gross carrying amount. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 7
-IssueDate 2019-01-01
-Paragraph IG20D
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_IG20D&doctype=Implementation%20Guidance
-URIDate 2019-03-27

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 7
-IssueDate 2019-01-01
-Paragraph 35N
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_35N&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_ExpectedCreditLossRate
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of trade receivables and other receivables. [Refer: Trade receivables; Other receivables]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 54
-Subparagraph h
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_h&doctype=Standard
-URIDate 2019-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 78
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_78_b&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_TradeAndOtherReceivables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	ifrs-full_PastDueStatusAxis=himx_NoPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_PastDueStatusAxis=ifrs-full_CurrentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_PastDueStatusAxis=ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_PastDueStatusAxis=ifrs-full_LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_PastDueStatusAxis=himx_LaterThanNinentyOneDaysAndNotLaterThanOneHundredAndTwentyDaysMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_PastDueStatusAxis=himx_LaterThanOneHundredAndTwentyOneDaysMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Accounts Receivable, net - Analysis of expected credit losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
IFRS Statement [Line Items]
Carrying amount of accounts receivable	$ 164,943	$ 189,279	$ 188,774
Loss allowance for lifetime expected credit	0	0
No Past Due [Member]
IFRS Statement [Line Items]
Carrying amount of accounts receivable	$ 162,765	$ 186,654
Weighted average loss rate	0.00%	0.00%
Loss allowance for lifetime expected credit	$ 0	$ 0
Past due within 30 days [Member]
IFRS Statement [Line Items]
Carrying amount of accounts receivable	1,685	$ 2,622
Weighted average loss rate		0.00%
Loss allowance for lifetime expected credit	$ 0	$ 0
Past due within 30 days [Member] \| Bottom of range [member]
IFRS Statement [Line Items]
Weighted average loss rate	0.00%
Past due within 30 days [Member] \| Top of range [member]
IFRS Statement [Line Items]
Weighted average loss rate	0.25%
Past due 31-60 days [Member]
IFRS Statement [Line Items]
Carrying amount of accounts receivable	$ 474	3
Loss allowance for lifetime expected credit	$ 0	$ 0
Past due 31-60 days [Member] \| Bottom of range [member]
IFRS Statement [Line Items]
Weighted average loss rate	0.00%
Past due 31-60 days [Member] \| Top of range [member]
IFRS Statement [Line Items]
Weighted average loss rate	4.16%	0.01%
Past due 61-90 days [Member]
IFRS Statement [Line Items]
Carrying amount of accounts receivable	$ 0	$ 0
Loss allowance for lifetime expected credit	$ 0	$ 0
Past due 61-90 days [Member] \| Bottom of range [member]
IFRS Statement [Line Items]
Weighted average loss rate	0.00%
Past due 61-90 days [Member] \| Top of range [member]
IFRS Statement [Line Items]
Weighted average loss rate	4.17%	6.29%
Past due 91-120 days [Member]
IFRS Statement [Line Items]
Carrying amount of accounts receivable	$ 19	$ 0
Loss allowance for lifetime expected credit	$ 0	$ 0
Past due 91-120 days [Member] \| Bottom of range [member]
IFRS Statement [Line Items]
Weighted average loss rate	0.00%
Past due 91-120 days [Member] \| Top of range [member]
IFRS Statement [Line Items]
Weighted average loss rate	20.40%	18.21%
Past due over 121 days [Member]
IFRS Statement [Line Items]
Carrying amount of accounts receivable	$ 0	$ 0
Weighted average loss rate	100.00%	100.00%
Loss allowance for lifetime expected credit	$ 0	$ 0