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Property, Plant and Equipment - Summary of Breakdown of Property, Plant and Equipment by Country (Detail) - EUR (€)
€ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment € 74,189 € 84,517 € 84,431
Italy [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 41,523 44,239  
Romania [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 16,585 17,520  
United States of America [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 11,381 18,259  
Brazil [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 2,574 3,167  
Europe [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 1,168 919  
China [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 779 166  
Other countries [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment € 179 € 247