Annual and transition report of foreign private issuers [Sections 13 or 15(d)]

Breakdown of expenses by nature - Summary of Depreciation, Amortization and Impairments (Detail)

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Breakdown of expenses by nature - Summary of Depreciation, Amortization and Impairments (Detail) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Depreciation, Amortization and Impairments [Line Items]      
Depreciation of property, plant and equipment € 21,599 € 20,347  
Impairments of property, plant and equipment 320 510 € 701
Reversal of impairments of property, plant and equipment (152) (635) (679)
Amortization of intangible assets 3,053 3,635  
Depreciation of right-of-use assets 11,734 8,537 6,710
Impairment of intangible assets 5,833    
Cost Of Sales, Selling, And Distribution Expenses, General And Administrative Expenses      
Depreciation, Amortization and Impairments [Line Items]      
Total 42,387 32,394 27,150
Cost of Sales      
Depreciation, Amortization and Impairments [Line Items]      
Depreciation of property, plant and equipment 21,490 20,090 16,542
Impairments of property, plant and equipment 320 510 701
Reversal of impairments of property, plant and equipment (152) (635) (679)
Amortization of intangible assets 1,390 2,517 2,883
Depreciation of right-of-use assets 5,374 2,474 886
Selling and distribution Expenses      
Depreciation, Amortization and Impairments [Line Items]      
Amortization of intangible assets 395 395 231
Impairment of customer relationships 5,539 0 0
Depreciation of right-of-use assets 113 114 148
General and administrative expenses      
Depreciation, Amortization and Impairments [Line Items]      
Depreciation of property, plant and equipment 109 257 185
Amortization of intangible assets 1,268 723 577
Depreciation of right-of-use assets 6,247 5,949 5,676
Impairment of intangible assets € 294 € 0 € 0