Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
|---|---|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||||
| Property, plant and equipment [abstract] | ||||||
| Property, plant and equipment |
36,467
EUR
|
36,423
EUR
|
13,633
EUR
|
13,585
EUR
|
— | — |
| Intangible assets and goodwill [abstract] | ||||||
| Intangible assets other than goodwill [abstract] | ||||||
| Intangible assets other than goodwill |
1,494
EUR
|
1,494
EUR
|
777,000
EUR
|
777,000
EUR
|
— | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||||||
| Investments in subsidiaries reported in separate financial statements | — |
346,000
EUR
|
— |
346,000
EUR
|
— | — |
| Trade and other non-current receivables [abstract] | ||||||
| Non-current prepayments and non-current accrued income other than non-current contract assets [abstract] | ||||||
| Non-current prepayments |
38,307
EUR
|
38,307
EUR
|
32,571
EUR
|
32,571
EUR
|
— | — |
| Trade and other non-current receivables |
14,400
EUR
|
14,400
EUR
|
13,612
EUR
|
13,612
EUR
|
— | — |
| Non-current prepayments and non-current accrued income including non-current contract assets [abstract] | ||||||
| Miscellaneous non-current assets [abstract] | ||||||
| Non-current investments other than investments accounted for using equity method | — | — | — | — | — | — |
| Long-term deposits |
13,475
EUR
|
13,232
EUR
|
12,384
EUR
|
12,142
EUR
|
— | — |
| Trade and other current receivables [abstract] | ||||||
| Current trade receivables |
14,083
EUR
|
13,428
EUR
|
15,374
EUR
|
14,573
EUR
|
— | — |
| Other current receivables |
5,836
EUR
|
5,966
EUR
|
3,428
EUR
|
3,625
EUR
|
— | — |
| Current prepayments and current accrued income including current contract assets [abstract] | ||||||
| Current prepayments and current accrued income including current contract assets |
2,860
EUR
|
2,763
EUR
|
1,906
EUR
|
1,810
EUR
|
— | — |
| Categories of non-current financial assets [abstract] | ||||||
| Non-current financial assets at fair value through other comprehensive income [abstract] | ||||||
| Non-current investments in equity instruments designated at fair value through other comprehensive income |
25,000
EUR
|
25,000
EUR
|
25,000
EUR
|
25,000
EUR
|
— | — |
| Classes of current inventories [abstract] | ||||||
| Current inventories |
11,618
EUR
|
11,618
EUR
|
9,602
EUR
|
9,602
EUR
|
— | — |
| Classes of current inventories, alternative [abstract] | ||||||
| Cash and cash equivalents [abstract] | ||||||
| Cash and cash equivalents |
45,638
EUR
|
44,827
EUR
|
79,913
EUR
|
79,120
EUR
|
77,022
EUR
|
76,286
EUR
|
| Miscellaneous current assets [abstract] | ||||||
| Current investments | — | — | — | — | — | — |
| Short-term deposits, not classified as cash equivalents |
1,110
EUR
|
1,101
EUR
|
3,647
EUR
|
3,646
EUR
|
— | — |
| Non-current portion of non-current borrowings, by type [abstract] | ||||||
| Non-current portion of non-current loans received |
82,605
EUR
|
82,592
EUR
|
81,654
EUR
|
81,654
EUR
|
— | — |
| Current borrowings and current portion of non-current borrowings, by type [abstract] | ||||||
| Current loans received and current portion of non-current loans received |
4,000
EUR
|
— |
-
EUR
|
— | — | — |
| Trade and other current payables [abstract] | ||||||
| Current trade payables |
15,295
EUR
|
15,024
EUR
|
17,670
EUR
|
17,101
EUR
|
— | — |
| Current accruals and current deferred income including current contract liabilities [abstract] | ||||||
| Current accruals and current deferred income including current contract liabilities |
11,130
EUR
|
11,036
EUR
|
3,844
EUR
|
3,795
EUR
|
— | — |
| Other current payables |
25,396
EUR
|
— |
27,646
EUR
|
— | — | — |
| Issued capital [abstract] | ||||||
| Issued capital |
92,388
EUR
|
92,388
EUR
|
92,388
EUR
|
92,388
EUR
|
— | — |
| Retained earnings [abstract] | ||||||
| Retained earnings, profit (loss) for reporting period |
19,395
EUR
|
19,571
EUR
|
2,362
EUR
|
2,252
EUR
|
— | — |
| Retained earnings, excluding profit (loss) for reporting period |
78,107
EUR
|
78,384
EUR
|
80,469
EUR
|
80,636
EUR
|
— | — |
| Net assets (liabilities) [abstract] | ||||||
| Assets |
274,301
EUR
|
272,859
EUR
|
228,172
EUR
|
226,692
EUR
|
— | — |
| Net current assets (liabilities) [abstract] | ||||||
| Current assets |
81,157
EUR
|
79,703
EUR
|
113,889
EUR
|
112,376
EUR
|
— | — |
| Current liabilities |
76,929
EUR
|
76,405
EUR
|
65,540
EUR
|
64,750
EUR
|
— | — |
| Assets less current liabilities [abstract] |