Statement Of Financial Position [Abstract]
| Concept |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||
| Property, plant and equipment | — | — |
575,563,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
587,506,000
EUR
|
— | — | — | — | — | — | — |
| Intangible assets other than goodwill | — | — |
2,130,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
2,104,000
EUR
|
— | — | — | — | — | — | — |
| Trade and other non-current receivables | — | — |
896,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
0
EUR
|
— | — | — | — | — | — | — |
| Non-current assets | — | — |
580,148,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
590,757,000
EUR
|
— | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||
| Current inventories | — | — |
399,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
360,000
EUR
|
— | — | — | — | — | — | — |
| Trade and other current receivables | — | — |
14,151,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
10,183,000
EUR
|
— | — | — | — | — | — | — |
| Cash and cash equivalents | — | — |
34,840,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
26,679,000
EUR
|
— | — |
35,183,000
EUR
|
— | — | — | — |
| Current assets other than non-current assets or disposal groups classified as held for sale or as held for distribution to owners | — | — |
49,390,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
37,222,000
EUR
|
— | — | — | — | — | — | — |
| Current assets | — | — |
49,390,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
37,336,000
EUR
|
— | — | — | — | — | — | — |
| Assets | — | — |
629,538,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
628,093,000
EUR
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — | — |
263,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
263,000,000
EUR
|
— | — | — | — | — | — | — |
| Share premium | — | — |
44,478,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
44,478,000
EUR
|
— | — | — | — | — | — | — |
| Equity |
21,271,000
EUR
|
52,146,000
EUR
|
380,895,000
EUR
|
0
EUR
|
263,000,000
EUR
|
380,895,000
EUR
|
44,478,000
EUR
|
20,262,000
EUR
|
47,794,000
EUR
|
102,000
EUR
|
375,432,000
EUR
|
263,000,000
EUR
|
44,478,000
EUR
|
375,432,000
EUR
|
18,520,000
EUR
|
377,018,000
EUR
|
— |
44,478,000
EUR
|
51,263,000
EUR
|
263,000,000
EUR
|
243,000
EUR
|
| Liabilities [abstract] | |||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||
| Trade and other non-current payables | — | — |
1,461,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
1,733,000
EUR
|
— | — | — | — | — | — | — |
| Non-current liabilities | — | — |
218,694,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
222,192,000
EUR
|
— | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||
| Current provisions [abstract] | |||||||||||||||||||||
| Current provisions | — | — |
1,572,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
1,289,000
EUR
|
— | — | — | — | — | — | — |
| Trade and other current payables | — | — |
10,348,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
9,149,000
EUR
|
— | — | — | — | — | — | — |
| Current liabilities | — | — |
29 949
EUR
|
— | — | — | — | — | — | — | — | — | — |
30,469,000
EUR
|
— | — | — | — | — | — | — |
| Liabilities | — | — |
248,643,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
252,661,000
EUR
|
— | — | — | — | — | — | — |
| Equity and liabilities | — | — |
629,538,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
628,093,000
EUR
|
— | — | — | — | — | — | — |