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Income Tax Expense - Additional Information (Detail) - EUR (€) € in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income tax [line items] |  |  |
Profit / (loss) before tax | € (15,072) | € 3,561 | € 8,774
Income tax expense | 1,090 | 2,273 | € 4,389
Current income tax receivable | 3,000 | 2,195 |
Deferred tax assets | € 1,975 | 1,965 |
Maximum percentage of permitted tax loss carry forwards can be utilized to off set | 80.00% |  |
Current income tax payable | € 339 | 1,874 |
Tax on unremitted earnings of subsidiaries [member] |  |  |
Income tax [line items] |  |  |
Tax effect of unremitted earnings | 1,090 | 1,129 |
Tax on dividends distribution Of Subsidiaries [member] |  |  |
Income tax [line items] |  |  |
Tax effect of aforementioned retained earnings recognized | € 516 | € 516 |
IRAP (regional tax) [member] |  |  |
Income tax [line items] |  |  |
Applicable tax rate | 4.82% | 4.82% | 4.82%
Increase in applicable tax rate | 0.92% | 0.92% | 0.92%
Current tax rate | 3.90% | 3.90% | 3.90%
IRES (state tax) [member] |  |  |
Income tax [line items] |  |  |
Applicable tax rate | 24.00% | 24.00% | 24.00%
Income tax expense | € (1,090) | € (2,273) | € (4,389)
Tax effect of unremitted earnings | € 0 | (755) | € (515)
Uncertain tax treatment [Member] |  |  |
Income tax [line items] |  |  |
Current income tax payable |  | € 300 |

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