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Provisions (Non-Current and Current) - Disclosure of Changes in Provision Related to Investment (Detail) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of other provisions [line items]    
Beginning Balance € 18,019 € 17,455
Provisions made during the year 1,802 6,475
Provisions used during the year (6,362) (5,811)
Provisions reversed during the year (48) (100)
Ending Balance 13,411 18,019
Provision for legal claims [member]    
Disclosure of other provisions [line items]    
Beginning Balance 12,865 10,469
Provisions made during the year 1,110 5,403
Provisions used during the year (4,572) (2,907)
Provisions reversed during the year   (100)
Ending Balance 9,403 12,865
Provision for tax claims [member]    
Disclosure of other provisions [line items]    
Beginning Balance 360 641
Provisions made during the year   103
Provisions used during the year (105) (384)
Provisions reversed during the year (26)  
Ending Balance 229 360
Provision for warranties [member]    
Disclosure of other provisions [line items]    
Beginning Balance 3,745 4,489
Provisions made during the year 455 969
Provisions used during the year (1,339) (1,713)
Provisions reversed during the year (22)  
Ending Balance 2,839 3,745
Termination indemnities for sales agents [member]    
Disclosure of other provisions [line items]    
Beginning Balance 1,049 1,197
Provisions made during the year 237  
Provisions used during the year (346) (148)
Ending Balance € 940 1,049
Other provisions [member]    
Disclosure of other provisions [line items]    
Beginning Balance   659
Provisions used during the year   € (659)