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Inventories - Summary of Changes in the Provision for Slow Moving and Obsolete Raw Materials and Finished Products (Detail) - EUR (€)
€ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Classes Of Inventories [Abstract]    
Beginning balance € 13,059 € 11,855
Additions 3,413 3,371
Reductions (904) (2,167)
Ending balance € 15,568 € 13,059