Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2024-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
445,479,000
EUR
|
395,157,000
EUR
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets other than goodwill |
4,010,000
EUR
|
4,941,000
EUR
|
— |
| Investments accounted for using equity method [abstract] | |||
| Investments in joint ventures accounted for using equity method |
99,000
EUR
|
45,000
EUR
|
— |
| Trade and other current receivables [abstract] | |||
| Current trade receivables |
49,985,000
EUR
|
26,912,000
EUR
|
— |
| Current prepayments and current accrued income other than current contract assets [abstract] | |||
| Current prepayments [abstract] | |||
| Current prepayments |
1,987,000
EUR
|
1,883,000
EUR
|
— |
| Other current receivables |
30,657,000
EUR
|
34,867,000
EUR
|
— |
| Current prepayments and current accrued income including current contract assets [abstract] | |||
| Categories of current financial assets [abstract] | |||
| Current loans and receivables |
266,060,000
EUR
|
167,082,000
EUR
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
61,000
EUR
|
41,000
EUR
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
113,000
EUR
|
634,000
EUR
|
499,000
EUR
|
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
22,000,000
EUR
|
28,143,000
EUR
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings |
35,000
EUR
|
43,000
EUR
|
— |
| Current portion of non-current borrowings |
6,143,000
EUR
|
6,143,000
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 contract liabilities [abstract] | |||
| Current advances received, representing current contract liabilities for performance obligations satisfied at point in time |
1,559,000
EUR
|
29,602,000
EUR
|
— |
| Trade and other current payables |
112,918,000
EUR
|
56,153,000
EUR
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Other non-current liabilities |
14,615,000
EUR
|
1,880,000
EUR
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Other current liabilities |
8,891,000
EUR
|
7,770,000
EUR
|
— |
| Issued capital [abstract] | |||
| Issued capital |
146,256,000
EUR
|
146,256,000
EUR
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
67,404,000
EUR
|
48,386,000
EUR
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Revaluation surplus |
20,830,000
EUR
|
23,320,000
EUR
|
— |
| Miscellaneous equity [abstract] | |||
| Statutory reserve |
14,626,000
EUR
|
12,105,000
EUR
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
820,320,000
EUR
|
677,417,000
EUR
|
— |
| Liabilities |
562,125,000
EUR
|
438,731,000
EUR
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
353,059,000
EUR
|
264,797,000
EUR
|
— |
| Current liabilities |
211,399,000
EUR
|
138,674,000
EUR
|
— |
| Assets less current liabilities [abstract] |