Statement Of Financial Position [Abstract]
| Concept |
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 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 |
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 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||||||||
| Property, plant and equipment |
37,600,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
38,200,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets |
2,100,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
3,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Goodwill |
400,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
400,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Intangible assets other than goodwill |
1,200,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
1,800,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method |
20,100,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
19,900,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets |
3,200,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
4,200,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other receivables |
7,500,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
10,800,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
14,800,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
7,500,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
1,100,000
EUR
|
| Assets |
117,300,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
157,100,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||||||||
| Issued capital |
12,600,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
12,600,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Share premium |
23,400,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
23,400,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Treasury shares |
1,100,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
1,200,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other reserves |
7,200,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
7,200,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent |
96,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
93,300,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
96,000,000
EUR
|
7,200,000
EUR
|
100,000
EUR
|
23,400,000
EUR
|
54,900,000
EUR
|
1,100,000
EUR
|
12,600,000
EUR
|
0
EUR
|
1,100,000
EUR
|
1,200,000
EUR
|
52,100,000
EUR
|
7,200,000
EUR
|
93,300,000
EUR
|
1,000,000
EUR
|
100,000
EUR
|
23,400,000
EUR
|
0
EUR
|
12,600,000
EUR
|
53,000,000
EUR
|
100,000
EUR
|
12,600,000
EUR
|
-
EUR
|
1,300,000
EUR
|
0
EUR
|
7,200,000
EUR
|
23,400,000
EUR
|
95,000,000
EUR
|
| Liabilities [abstract] | |||||||||||||||||||||||||||
| Deferred tax liabilities |
100,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
100,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
21,300,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
63,800,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
117,300,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
157,100,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |