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Income Tax Expense - Summary of Total Income Taxes (Detail) - EUR (€) € in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure Of Income Taxes [line items] |  |  |
Current tax expense income | € (1,724) | € (2,420) | € (5,286)
Deferred tax liability asset | 634 | 147 | 897
Total | (1,090) | (2,273) | (4,389)
Domestic [member] |  |  |
Disclosure Of Income Taxes [line items] |  |  |
Current tax expense income | (1,065) | (838) | (2,116)
Foreign [member] |  |  |
Disclosure Of Income Taxes [line items] |  |  |
Current tax expense income | (659) | (1,582) | (3,170)
Deferred tax liability asset | € 634 | € 147 | € 897

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- Definition The amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 12 -IssueDate 2023-01-01 -Paragraph 80 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2023-en-r&anchor=para_80_a&doctype=Standard -URIDate 2023-03-23 + Details
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