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 |
159,058,000
EUR
|
172,511,000
EUR
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets other than goodwill |
10,635,000
EUR
|
8,062,000
EUR
|
— |
| Goodwill |
15,272,000
EUR
|
15,272,000
EUR
|
— |
| Investments accounted for using equity method [abstract] | |||
| Investments accounted for using equity method |
1,845,000
EUR
|
1,823,000
EUR
|
— |
| Trade and other non-current receivables [abstract] | |||
| Other non-current receivables |
510,000
EUR
|
534,000
EUR
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Non-current derivative financial assets |
1,653,000
EUR
|
2,012,000
EUR
|
— |
| Trade and other current receivables [abstract] | |||
| Current trade receivables |
8,871,000
EUR
|
4,870,000
EUR
|
— |
| Current receivables due from related parties |
2,826,000
EUR
|
2,815,000
EUR
|
— |
| Current prepayments and current accrued income other than current contract assets [abstract] | |||
| Current prepayments [abstract] | |||
| Current prepaid expenses |
1,273,000
EUR
|
1,287,000
EUR
|
— |
| Other current receivables |
18,025,000
EUR
|
12,105,000
EUR
|
— |
| Current prepayments and current accrued income including current contract assets [abstract] | |||
| Current accrued income including current contract assets [abstract] | |||
| Current contract assets |
1,804,000
EUR
|
855,000
EUR
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
6,745,000
EUR
|
14,093,000
EUR
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
8,437,000
EUR
|
5,838,000
EUR
|
11,271,000
EUR
|
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | |||
| Non-current assets or disposal groups classified as held for sale |
2,050,000
EUR
|
659,000
EUR
|
— |
| Miscellaneous current assets [abstract] | |||
| Current restricted cash and cash equivalents |
5,915,000
EUR
|
7,140,000
EUR
|
— |
| Classes of other provisions [abstract] | |||
| Other provisions [abstract] | |||
| Other non-current provisions |
544,000
EUR
|
555,000
EUR
|
— |
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
72,205,000
EUR
|
82,073,000
EUR
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current portion of non-current borrowings |
17,920,000
EUR
|
12,878,000
EUR
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Current borrowings and current portion of non-current borrowings, by type [abstract] | |||
| Current bonds issued and current portion of non-current bonds issued |
537,000
EUR
|
529,000
EUR
|
— |
| Borrowings, by type [abstract] | |||
| Bonds issued |
78,321,000
EUR
|
78,539,000
EUR
|
— |
| Trade and other current payables [abstract] | |||
| Current trade payables |
16,780,000
EUR
|
9,308,000
EUR
|
— |
| Current accruals and current deferred income including current contract liabilities [abstract] | |||
| Current deferred income including current contract liabilities [abstract] | |||
| Current contract liabilities [abstract] | |||
| Current contract liabilities |
2,595,000
EUR
|
662,000
EUR
|
— |
| Other current payables |
5,484,000
EUR
|
5,252,000
EUR
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Non-current derivative financial liabilities |
1,564,000
EUR
|
1,722,000
EUR
|
— |
| Other non-current liabilities |
398,000
EUR
|
208,000
EUR
|
— |
| Issued capital [abstract] | |||
| Issued capital |
612,000
EUR
|
612,000
EUR
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
37,769,000
EUR
|
28,717,000
EUR
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Revaluation surplus |
58,315,000
EUR
|
55,668,000
EUR
|
— |
| Reserve of exchange differences on translation |
739,000
EUR
|
1,935,000
EUR
|
— |
| Reserve of cash flow hedges |
83,000
EUR
|
358,000
EUR
|
— |
| Miscellaneous equity [abstract] | |||
| Statutory reserve |
13,000
EUR
|
13,000
EUR
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
272,836,000
EUR
|
277,424,000
EUR
|
— |
| Liabilities |
212,771,000
EUR
|
207,920,000
EUR
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
55,946,000
EUR
|
52,421,000
EUR
|
— |
| Current liabilities |
45,110,000
EUR
|
29,572,000
EUR
|
— |
| Assets less current liabilities [abstract] |