| Summary of Employee Benefits Expense | 
 Employee benefits expense are detailed as follows: 
  
      
       
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
        
       
           | 
           | 
        For the year ended December 31,  | 
           | 
        
       
           | 
           | 
        2023  | 
           | 
           | 
        2022  | 
           | 
           | 
        2021  | 
           | 
        
       
           | 
           | 
        (EUR thousand)  | 
           | 
        
       
        Included in Cost of sales:  | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Wages and salaries  | 
           | 
           | 
        175,090  | 
           | 
           | 
           | 
        154,852  | 
           | 
           | 
           | 
        134,619  | 
           | 
        
       
        Social security costs  | 
           | 
           | 
        40,025  | 
           | 
           | 
           | 
        30,721  | 
           | 
           | 
           | 
        25,610  | 
           | 
        
       
        Pension costs  | 
           | 
           | 
        7,036  | 
           | 
           | 
           | 
        5,970  | 
           | 
           | 
           | 
        4,917  | 
           | 
        
       
        Share-based payment expense  | 
           | 
           | 
        113  | 
           | 
           | 
           | 
        287  | 
           | 
           | 
           | 
        —  | 
           | 
        
       
        Included in Selling and Marketing expenses:  | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Wages and salaries  | 
           | 
           | 
        12,423  | 
           | 
           | 
           | 
        13,978  | 
           | 
           | 
           | 
        12,716  | 
           | 
        
       
        Social security costs  | 
           | 
           | 
        2,442  | 
           | 
           | 
           | 
        1,606  | 
           | 
           | 
           | 
        1,531  | 
           | 
        
       
        Pension costs  | 
           | 
           | 
        390  | 
           | 
           | 
           | 
        433  | 
           | 
           | 
           | 
        403  | 
           | 
        
       
        Share-based payment expense  | 
           | 
           | 
        57  | 
           | 
           | 
           | 
        1,024  | 
           | 
           | 
           | 
        —  | 
           | 
        
       
        Included in Research and Development expenses:  | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Wages and salaries  | 
           | 
           | 
        14,430  | 
           | 
           | 
           | 
        12,463  | 
           | 
           | 
           | 
        9,089  | 
           | 
        
       
        Social security costs  | 
           | 
           | 
        1,862  | 
           | 
           | 
           | 
        1,496  | 
           | 
           | 
           | 
        1,270  | 
           | 
        
       
        Pension costs  | 
           | 
           | 
        466  | 
           | 
           | 
           | 
        358  | 
           | 
           | 
           | 
        331  | 
           | 
        
       
        Share-based payment expense  | 
           | 
           | 
        167  | 
           | 
           | 
           | 
        800  | 
           | 
           | 
           | 
        —  | 
           | 
        
       
        Included in General and Administrative expenses:  | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Wages and salaries  | 
           | 
           | 
        24,518  | 
           | 
           | 
           | 
        22,272  | 
           | 
           | 
           | 
        26,106  | 
           | 
        
       
        Social security costs  | 
           | 
           | 
        4,846  | 
           | 
           | 
           | 
        3,612  | 
           | 
           | 
           | 
        3,589  | 
           | 
        
       
        Pension costs  | 
           | 
           | 
        699  | 
           | 
           | 
           | 
        510  | 
           | 
           | 
           | 
        545  | 
           | 
        
       
        Cash settled awards  | 
           | 
           | 
        —  | 
           | 
           | 
           | 
        —  | 
           | 
           | 
           | 
        (10,831  | 
        )  | 
        
       
        Share-based payment expense  | 
           | 
           | 
        1,639  | 
           | 
           | 
           | 
        5,991  | 
           | 
           | 
           | 
        1,740  | 
           | 
        
       
        Total employee benefits expense  | 
           | 
           | 
        286,203  | 
           | 
           | 
           | 
        256,373  | 
           | 
           | 
           | 
        211,635  | 
           | 
        
       
  
 | 
| Summary of Average Size of Group's Workforce | 
 The average size of the Group's workforce during the year is as follows: 
  
      
       
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
        
       
           | 
           | 
        For the year ended December 31,  | 
           | 
        
       
           | 
           | 
        2023  | 
           | 
           | 
        2022  | 
           | 
           | 
        2021  | 
           | 
        
       
        Executives  | 
           | 
           | 
        70  | 
           | 
           | 
           | 
        57  | 
           | 
           | 
           | 
        51  | 
           | 
        
       
        Managers  | 
           | 
           | 
        211  | 
           | 
           | 
           | 
        137  | 
           | 
           | 
           | 
        126  | 
           | 
        
       
        Employees  | 
           | 
           | 
        5,260  | 
           | 
           | 
           | 
        4,781  | 
           | 
           | 
           | 
        4,284  | 
           | 
        
       
        Total Workforce  | 
           | 
           | 
        5,541  | 
           | 
           | 
           | 
        4,975  | 
           | 
           | 
           | 
        4,461  | 
           | 
        
       
  
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