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Note 15 - Financial Assets and Financial Liabilities (Details Textual) $ in Millions | Dec. 31, 2024 USD ($)
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Disclosure of financial assets [line items] |
Percentage of strengthening in closing exchange rate of foreign currencies | 5.00%
Percentage of weakening in closing exchange rate of foreign currencies | 5.00%
Investment, interest rate | 8.00%
Price Risk [member] | USDC and USDT [member] |
Disclosure of financial assets [line items] |
Current financial assets | $ 0.8

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- Definition The amount of current financial assets. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_25&doctype=Standard -URIDate 2024-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The rate of interest on investment. + References No definition available. + Details
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Namespace Prefix: | opra_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Percentage of strengthening in closing foreign exchange rate. + References No definition available. + Details
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Namespace Prefix: | opra_
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- Definition Percentage of weakening in closing foreign exchange rate. + References No definition available. + Details
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Namespace Prefix: | opra_
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- Details
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Namespace Prefix: |
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Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |