Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Property, Plant and Equipment - Summary of Changes in Items of Property, Plant and Equipment (Details)

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Property, Plant and Equipment - Summary of Changes in Items of Property, Plant and Equipment (Details) - EUR (€)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance € 313,658,000  
Impairment 0  
Ending balance 392,717,000 € 313,658,000
Cost    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 638,031,000 571,642,000
Additions 116,631,000 89,128,000
Disposals (9,544,000) (1,803,000)
Exchange differences 9,642,000 (20,936,000)
Ending balance 754,760,000 638,031,000
Depreciation and Impairment    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 324,374,000 291,056,000
Depreciation charge for the year 41,734,000 41,152,000
Impairment 943,000 210,000
Disposals (8,933,000) (1,791,000)
Exchange differences 3,925,000 (6,253,000)
Ending balance 362,043,000 324,374,000
Land and Buildings    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 84,768,000  
Ending balance 90,484,000 84,768,000
Land and Buildings | Cost    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 148,331,000 147,872,000
Additions 2,060,000 5,441,000
Disposals (141,000)  
Reclassifications 7,719,000 811,000
Exchange differences 1,946,000 (5,793,000)
Ending balance 159,915,000 148,331,000
Land and Buildings | Depreciation and Impairment    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 63,563,000 59,139,000
Depreciation charge for the year 5,319,000 5,384,000
Impairment   210,000
Disposals (140,000)  
Exchange differences 689,000 (1,170,000)
Ending balance 69,431,000 63,563,000
Plant and Machinery    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 153,098,000  
Ending balance 197,257,000 153,098,000
Plant and Machinery | Cost    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 375,902,000 353,971,000
Additions 26,826,000 24,958,000
Disposals (7,759,000) (1,724,000)
Reclassifications 44,412,000 12,266,000
Exchange differences 6,358,000 (13,569,000)
Ending balance 445,739,000 375,902,000
Plant and Machinery | Depreciation and Impairment    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 222,804,000 198,878,000
Depreciation charge for the year 29,549,000 30,121,000
Impairment 547,000  
Disposals (7,330,000) (1,741,000)
Exchange differences 2,912,000 (4,454,000)
Ending balance 248,482,000 222,804,000
Industrial and Commercial Equipment    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 11,289,000  
Ending balance 11,212,000 11,289,000
Industrial and Commercial Equipment | Cost    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 41,189,000 33,503,000
Additions 3,862,000 6,539,000
Disposals (1,188,000) (40,000)
Reclassifications 2,027,000 1,727,000
Exchange differences 379,000 (540,000)
Ending balance 46,269,000 41,189,000
Industrial and Commercial Equipment | Depreciation and Impairment    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 29,900,000 25,481,000
Depreciation charge for the year 5,660,000 4,610,000
Impairment 396,000  
Disposals (1,053,000) (12,000)
Exchange differences 154,000 (179,000)
Ending balance 35,057,000 29,900,000
Other Tangible Assets    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 3,209,000  
Ending balance 3,818,000 3,209,000
Other Tangible Assets | Cost    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 11,316,000 11,112,000
Additions 913,000 925,000
Disposals (421,000) (36,000)
Reclassifications 856,000 43,000
Exchange differences 227,000 (728,000)
Ending balance 12,891,000 11,316,000
Other Tangible Assets | Depreciation and Impairment    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 8,107,000 7,558,000
Depreciation charge for the year 1,206,000 1,037,000
Disposals (410,000) (38,000)
Exchange differences 170,000 (450,000)
Ending balance 9,073,000 8,107,000
Assets Under Construction and Advances    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 61,293,000  
Ending balance 89,946,000 61,293,000
Assets Under Construction and Advances | Cost    
Disclosure Of Property Plant And Equipment [Line Items]    
Beginning balance 61,293,000 25,184,000
Additions 82,970,000 51,265,000
Disposals (35,000) (3,000)
Reclassifications (55,014,000) (14,847,000)
Exchange differences 732,000 (306,000)
Ending balance € 89,946,000 € 61,293,000