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Income Tax Expense - Additional Information (Detail) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Income tax [line items]      
Profit / (loss) before tax € 3,561 € 8,774 € (20,565)
Income tax expense € 2,273 4,389 € 4,341
Effective income tax rates 63.80%    
Current income tax receivable € 2,195 2,032  
Deferred tax assets € 1,965 1,295  
Maximum percentage of permitted tax loss carry forwards can be utilized to off set 80.00%    
Current income tax payable € 1,874 2,740  
Tax on unremitted earnings of subsidiaries [member]      
Income tax [line items]      
Tax effect of unremitted earnings 1,129 1,051  
Tax on dividends distribution Of Subsidiaries [member]      
Income tax [line items]      
Tax effect of aforementioned retained earnings recognized € 576 € 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 € (2,273) € (4,389) € (4,341)
Tax effect of unremitted earnings (755) (515) € (1,024)
Uncertain tax treatment [Member]      
Income tax [line items]      
Current income tax payable 300 € 300  
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