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Short-Term Borrowings - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Short-Term Borrowings
Cash and time deposits	$ 164,000	$ 164,000
Unused Credit Lines Amount, Expired Amount	24,001
Debt Instrument Collateral Amounts	$ 136,000

X

- Definition

Amount of deposit as cash

+ References

No definition available.

+ Details

Name:	himx_CashAndTimeDeposits
Namespace Prefix:	himx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of assets pledged to secure a debt instrument.

+ References

No definition available.

+ Details

Name:	himx_DebtInstrumentCollateralAmounts
Namespace Prefix:	himx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The portion of unused credit lines amount which expire as of the balance sheet date.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

Name:	ifrs-full_BorrowingsAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration