Statement Of Financial Position [Abstract]
| Concept |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
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 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||
| Property, plant and equipment |
13,777,000
EUR
|
— | — | — | — | — | — |
15,023,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current tax assets, non-current |
108,000
EUR
|
— | — | — | — | — | — |
95,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other non-current financial assets |
5,467,000
EUR
|
— | — | — | — | — | — |
5,504,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other non-current non-financial assets |
228,000
EUR
|
— | — | — | — | — | — |
143,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets |
159,862,000
EUR
|
— | — | — | — | — | — |
164,552,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||
| Trade and other current receivables |
13,515,000
EUR
|
— | — | — | — | — | — |
14,466,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current tax assets, current |
1,767,000
EUR
|
— | — | — | — | — | — |
1,622,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other current financial assets |
33,567,000
EUR
|
— | — | — | — | — | — |
51,778,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other current non-financial assets |
6,290,000
EUR
|
— | — | — | — | — | — |
5,533,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
108,953,000
EUR
|
— | — | — | — | — | — |
112,050,000
EUR
|
— | — | — | — | — | — | — | — | — |
152,995,000
EUR
|
— | — | — |
| Current assets |
164,091,000
EUR
|
— | — | — | — | — | — |
185,448,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Assets |
323,953,000
EUR
|
— | — | — | — | — | — |
350,001,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital |
2,441,000
EUR
|
— | — | — | — | — | — |
2,441,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings |
371,456,000
EUR
|
— | — | — | — | — | — |
343,174,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
250,121,000
EUR
|
371,456,000
EUR
|
2,441,000
EUR
|
1,016,000
EUR
|
77,506,000
EUR
|
96,160,000
EUR
|
601,497,000
EUR
|
263,697,000
EUR
|
85,638,000
EUR
|
343,175,000
EUR
|
80,615,000
EUR
|
2,441,000
EUR
|
240,000
EUR
|
599,646,000
EUR
|
102,692,000
EUR
|
611,656,000
EUR
|
289,681,000
EUR
|
290,450,000
EUR
|
68,745,000
EUR
|
18,000
EUR
|
2,441,000
EUR
|
| Liabilities [abstract] | |||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||||||||
| Non-current provisions |
539,000
EUR
|
— | — | — | — | — | — |
518,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities |
6,761,000
EUR
|
— | — | — | — | — | — |
7,930,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities, non-current |
106,000
EUR
|
— | — | — | — | — | — |
13,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other non-current financial liabilities |
12,194,000
EUR
|
— | — | — | — | — | — |
15,517,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other non-current non-financial liabilities |
1,016,000
EUR
|
— | — | — | — | — | — |
404,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities |
22,346,000
EUR
|
— | — | — | — | — | — |
30,014,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||
| Current provisions [abstract] | |||||||||||||||||||||
| Current provisions |
2,338,000
EUR
|
— | — | — | — | — | — |
1,645,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other current payables |
8,875,000
EUR
|
— | — | — | — | — | — |
12,544,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities, current |
3,037,000
EUR
|
— | — | — | — | — | — |
3,993,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other current financial liabilities |
13,550,000
EUR
|
— | — | — | — | — | — |
15,440,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other current non-financial liabilities |
20,903,000
EUR
|
— | — | — | — | — | — |
19,824,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities |
51,486,000
EUR
|
— | — | — | — | — | — |
56,290,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
73,833,000
EUR
|
— | — | — | — | — | — |
86,304,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
323,953,000
EUR
|
— | — | — | — | — | — |
350,001,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |