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Income Tax Expense - Additional Information (Detail) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Income tax [line items]        
Profit / (loss) before tax € (14,698) € (15,072) € 3,561  
Income tax expense 684 1,090 2,273  
Net unrecognized deferred tax assets 655 669 € 36 € (110)
Current income tax receivable 1,642 3,000    
Deferred tax assets € 1,653 1,975    
Maximum percentage of permitted tax loss carry forwards can be utilized to off set 80.00%      
Current income tax payable € 830 339    
Amendment to IAS 12 Deferred Tax [Member]        
Income tax [line items]        
Net unrecognized deferred tax assets 2,297 1,324    
Tax on unremitted earnings of subsidiaries [member]        
Income tax [line items]        
Tax effect of unremitted earnings 614 1,090    
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 € (684) € (1,090) € (2,273)  
Tax effect of unremitted earnings 0 0 € (755)  
Uncertain tax treatment [Member]        
Income tax [line items]        
Current income tax payable € 0 € 0