Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-12-31 |
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 |
95,000,000
EUR
|
96,000,000
EUR
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
62,500,000
EUR
|
71,300,000
EUR
|
— |
| Investments accounted for using equity method [abstract] | |||
| Investments in associates accounted for using equity method |
1,400,000
EUR
|
1,400,000
EUR
|
— |
| Trade and other non-current receivables [abstract] | |||
| Trade and other non-current receivables |
1,300,000
EUR
|
1,000,000
EUR
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Non-current investments other than investments accounted for using equity method |
100,000
EUR
|
100,000
EUR
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
85,500,000
EUR
|
101,700,000
EUR
|
— |
| Current prepayments and current accrued income including current contract assets [abstract] | |||
| Current accrued income including current contract assets [abstract] | |||
| Current accrued income including current contract assets |
24,200,000
EUR
|
26,200,000
EUR
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
58,800,000
EUR
|
61,600,000
EUR
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
90,300,000
EUR
|
55,500,000
EUR
|
77,900,000
EUR
|
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
50,000,000
EUR
|
0
EUR
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings |
0
EUR
|
52,500,000
EUR
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other current payables [abstract] | |||
| Current accruals and current deferred income including current contract liabilities [abstract] | |||
| Current deferred income including current contract liabilities [abstract] | |||
| Current deferred income including current contract liabilities |
30,700,000
EUR
|
37,100,000
EUR
|
— |
| Trade and other current payables |
66,500,000
EUR
|
74,000,000
EUR
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Other non-current liabilities |
4,200,000
EUR
|
2,100,000
EUR
|
— |
| Issued capital [abstract] | |||
| Issued capital |
7,700,000
EUR
|
7,700,000
EUR
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
261,300,000
EUR
|
238,500,000
EUR
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of exchange differences on translation |
800,000
EUR
|
4,100,000
EUR
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
442,800,000
EUR
|
439,200,000
EUR
|
— |
| Liabilities |
175,000,000
EUR
|
188,700,000
EUR
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
261,700,000
EUR
|
248,100,000
EUR
|
— |
| Current liabilities |
105,900,000
EUR
|
170,800,000
EUR
|
— |
| Assets less current liabilities [abstract] |