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Trade Receivables - Summary of Trade Receivables by Geographic Region (Detail) - EUR (€)
€ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Total trade receivables, net € 39,056 € 41,259
Gross carrying amount [member]    
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Total trade receivables, net 44,660 46,584
Gross carrying amount [member] | Italian Customers [Member]    
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Total trade receivables, net 10,124 10,678
Gross carrying amount [member] | Other European Customers    
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Total trade receivables, net 10,761 12,252
Gross carrying amount [member] | North American customers [member]    
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Total trade receivables, net 8,233 7,232
Gross carrying amount [member] | Chinese customers [member]    
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Total trade receivables, net 5,589 7,059
Gross carrying amount [member] | South American customers [member]    
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Total trade receivables, net 5,047 4,956
Gross carrying amount [member] | Other foreign customers [member]    
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Total trade receivables, net 4,906 4,407
Provision for doubtful accounts [member]    
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Total trade receivables, net € (5,604) € (5,325)