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v3.21.1

Accounts Receivable, net - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Accounts Receivable, net |  |  |
Loss Allowance Accounts Receivable Ending Balance | $ 190 | $ 190 | $ 290
Charges to Earnings Accounts Receivable | $ 0 | 67 | $ 290
Gross carrying amount not reasonably expected to be recovered |  | $ 190 |

X
- Definition Amount of charges to earnings + References No definition available. + Details
Name: | himx_ChargesToEarningsTradeAndOtherReceivable
Namespace Prefix: | himx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of charges to earnings + References No definition available. + Details
Name: | himx_GrossCarryingAmountNotReasonablyExpectedToBeRecovered
Namespace Prefix: | himx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents amount of loss allowance in accordance with trade and other receivable + References No definition available. + Details
Name: | himx_LossAllowanceTradeAndOtherReceivableEndingBalance
Namespace Prefix: | himx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | ifrs-full_TradeAndOtherReceivablesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration