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Income Tax Expense - Additional Information (Detail) - EUR (€) € in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income tax [line items] |  |  |
Profit / (loss) before tax | € 8,774 | € (20,565) | € (31,345)
Income tax expense | € 4,389 | 4,341 | € 2,335
Effective income tax rates | 50.00% |  |
Current income tax receivable | € 2,032 | 1,255 |
Deferred tax assets | € 1,295 | 2,023 |
Maximum percentage of permitted tax loss carry forwards can be utilized to off set | 80.00% |  |
Current income tax payable | € 2,740 | 1,134 |
Tax on unremitted earnings of subsidiaries [member] |  |  |
Income tax [line items] |  |  |
Tax effect of unremitted earnings | 1,051 | € 507 |
Tax on dividends distribution Of Subsidiaries [member] |  |  |
Income tax [line items] |  |  |
Tax effect of aforementioned retained earnings recognized | € 576 |  |
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 | € (4,389) | € (4,341) | € (2,335)
Tax effect of unremitted earnings | (515) | (1,024) | € (430)
Uncertain tax treatment [Member] |  |  |
Income tax [line items] |  |  |
Current income tax payable | 300 | € 0 |
Uncertain tax treatment [Member] | Bottom of range [member] |  |  |
Income tax [line items] |  |  |
Current income tax payable | 200 |  |
Uncertain tax treatment [Member] | Top of range [member] |  |  |
Income tax [line items] |  |  |
Current income tax payable | € 400 |  |

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