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Share Capital, Reserves and Retained Earnings - Analysis of Share Capital Reserves (Detail) - EUR (€) € in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of reserves within equity [abstract] |  |  |  |
Legal reserve | € 10,971 | € 10,971 | € 10,971 | € 10,971
Majority shareholder capital contribution | 488 | 488 | 488 |
Shareholders: unpaid share capital | 0 | (165) |  |
Share premium reserve | 175 | 175 |  |
Stock option reserve | 1,133 | 824 |  |
Reserve for gain on disposal of Non-controlling interests | 4,219 | 4,219 | 1,088 |
Foreign operations translation reserve | 2,335 | 5,468 | 5,899 |
Remeasurement of defined benefit plan | 1,127 | 1,312 | (997) |
Total | € 20,448 | € 23,292 | € 17,449 |

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- Definition A component of equity representing the capital reserves. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition A component of equity representing exchange differences on translation of financial statements recognised in other comprehensive income and accumulated in equity. [Refer: Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 21 -IssueDate 2023-01-01 -Paragraph 52 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2023-en-r&anchor=para_52_b&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition A component of equity representing the accumulated remeasurements of defined benefit plans. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 78 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_78_e&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount received or receivable from the issuance of the entity's shares in excess of nominal value. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 78 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_78_e&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition A component of equity representing reserves created based on legal requirements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition Reserve for gain on disposal of non-controlling interests. + References No definition available. + Details
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- Definition Reserves for unpaid share capital. + References No definition available. + Details
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- Definition Stock Option Reserve + References No definition available. + Details
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