Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||||
| Property, plant and equipment [abstract] | |||||
| Property, plant and equipment |
115,800,000
EUR
|
— |
133,600,000
EUR
|
— | — |
| Intangible assets and goodwill [abstract] | |||||
| Intangible assets and goodwill |
78,300,000
EUR
|
— |
78,700,000
EUR
|
— | — |
| Investments accounted for using equity method [abstract] | |||||
| Investments accounted for using equity method |
2,100,000
EUR
|
— |
0
EUR
|
— | — |
| Miscellaneous non-current assets [abstract] | |||||
| Other non-current assets |
2,000,000
EUR
|
— |
1,400,000
EUR
|
— | — |
| Trade and other current receivables [abstract] | |||||
| Trade and other current receivables |
177,300,000
EUR
|
— |
184,400,000
EUR
|
— | — |
| Classes of current inventories [abstract] | |||||
| Current inventories |
101,500,000
EUR
|
— |
96,500,000
EUR
|
— | — |
| Classes of current inventories, alternative [abstract] | |||||
| Cash and cash equivalents [abstract] | |||||
| Cash and cash equivalents |
164,700,000
EUR
|
164,700,000
EUR
|
212,900,000
EUR
|
212,900,000
EUR
|
58,300,000
EUR
|
| Miscellaneous current assets [abstract] | |||||
| Other current assets |
13,400,000
EUR
|
— |
15,400,000
EUR
|
— | — |
| Miscellaneous assets [abstract] | |||||
| Restricted cash and cash equivalents | — |
500,000
EUR
|
— |
500,000
EUR
|
— |
| Borrowings [abstract] | |||||
| Non-current portion of non-current borrowings |
189,300,000
EUR
|
— |
197,900,000
EUR
|
— | — |
| Non-current portion of non-current borrowings, by type [abstract] | |||||
| Trade and other current payables [abstract] | |||||
| Current trade payables |
116,600,000
EUR
|
— |
121,900,000
EUR
|
— | — |
| Other current payables |
81,000,000
EUR
|
— |
75,400,000
EUR
|
— | — |
| Miscellaneous non-current liabilities [abstract] | |||||
| Non-current net defined benefit liability |
12,000,000
EUR
|
— |
12,500,000
EUR
|
— | — |
| Other non-current liabilities |
3,700,000
EUR
|
— |
8,000,000
EUR
|
— | — |
| Issued capital [abstract] | |||||
| Issued capital |
84,600,000
EUR
|
— |
100,300,000
EUR
|
— | — |
| Retained earnings [abstract] | |||||
| Retained earnings |
140,100,000
EUR
|
— |
80,600,000
EUR
|
— | — |
| Net assets (liabilities) [abstract] | |||||
| Assets |
721,500,000
EUR
|
— |
797,900,000
EUR
|
— | — |
| Liabilities |
503,400,000
EUR
|
— |
517,400,000
EUR
|
— | — |
| Net current assets (liabilities) [abstract] | |||||
| Current assets |
456,900,000
EUR
|
— |
509,200,000
EUR
|
— | — |
| Current liabilities |
212,000,000
EUR
|
— |
214,400,000
EUR
|
— | — |
| Assets less current liabilities [abstract] |