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Material accounting policy information - Additional Information (Detail) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of initial application of standards or interpretations [line items]      
Expected loss rates payment period 5 years    
Contractual payments period 180 days    
Shipping and handling expenses € 24,767 € 26,325 € 55,912
Advertising expenses 5,986 5,936 6,193
Commission Expenses € 5,327 € 5,861 € 7,318
Bottom of range [member]      
Disclosure of initial application of standards or interpretations [line items]      
Proportion of voting rights held in associate 20.00%    
Bottom of range [member] | Software [member]      
Disclosure of initial application of standards or interpretations [line items]      
Intangible assets useful lives 3 years    
Bottom of range [member] | Trademarks and patents [member]      
Disclosure of initial application of standards or interpretations [line items]      
Intangible assets useful lives 3 years    
Bottom of range [member] | Other intangible assets [member]      
Disclosure of initial application of standards or interpretations [line items]      
Intangible assets useful lives 2 years    
Bottom of range [member] | Buildings [member]      
Disclosure of initial application of standards or interpretations [line items]      
Property, plant and equipment useful lives 30 years    
Bottom of range [member] | Machinery and equipment [member]      
Disclosure of initial application of standards or interpretations [line items]      
Property, plant and equipment useful lives 4 years    
Bottom of range [member] | Office furniture and equipment [member]      
Disclosure of initial application of standards or interpretations [line items]      
Property, plant and equipment useful lives 5 years    
Bottom of range [member] | Retail gallery and store furnishing [member]      
Disclosure of initial application of standards or interpretations [line items]      
Property, plant and equipment useful lives 3 years    
Bottom of range [member] | Leasehold improvements [member]      
Disclosure of initial application of standards or interpretations [line items]      
Property, plant and equipment useful lives 5 years    
Top of range [member]      
Disclosure of initial application of standards or interpretations [line items]      
Proportion of voting rights held in associate 50.00%    
Top of range [member] | Software [member]      
Disclosure of initial application of standards or interpretations [line items]      
Intangible assets useful lives 5 years    
Top of range [member] | Trademarks and patents [member]      
Disclosure of initial application of standards or interpretations [line items]      
Intangible assets useful lives 5 years    
Top of range [member] | Other intangible assets [member]      
Disclosure of initial application of standards or interpretations [line items]      
Intangible assets useful lives 5 years    
Top of range [member] | Buildings [member]      
Disclosure of initial application of standards or interpretations [line items]      
Property, plant and equipment useful lives 50 years    
Top of range [member] | Machinery and equipment [member]      
Disclosure of initial application of standards or interpretations [line items]      
Property, plant and equipment useful lives 10 years    
Top of range [member] | Office furniture and equipment [member]      
Disclosure of initial application of standards or interpretations [line items]      
Property, plant and equipment useful lives 10 years    
Top of range [member] | Retail gallery and store furnishing [member]      
Disclosure of initial application of standards or interpretations [line items]      
Property, plant and equipment useful lives 4 years    
Top of range [member] | Leasehold improvements [member]      
Disclosure of initial application of standards or interpretations [line items]      
Property, plant and equipment useful lives 10 years