XML 117 R103.htm IDEA: XBRL DOCUMENT v3.21.1
Property, Plant and Equipment - Summary of Breakdown of Property, Plant and Equipment by Country (Detail) - EUR (€)
€ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment € 85,306 € 102,523 € 111,086
Italy [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 45,895 57,035  
Romania [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 19,253 19,831  
United States of America [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 14,778 17,800  
Brazil [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 2,807 4,250  
China [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 1,109 2,334  
Europe [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 1,461 1,260  
Other countries [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment € 3 € 13