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 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
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 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||
| Property, plant and equipment |
14,352,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
15,543,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements |
4,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
140,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Deferred tax assets |
2,322,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
2,623,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
55,568,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
60,679,000
EUR
|
— |
60,679,000
EUR
|
— | — | — | — | — | — |
44,104,000
EUR
|
— | — | — |
| Assets |
163,258,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
135,631,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||
| Issued capital |
17,674,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
17,674,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Retained earnings |
38,711,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
27,537,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Treasury shares |
1,256,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
2,268,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Other reserves |
4,157,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
5,353,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Equity |
60,516,000
EUR
|
38,711,000
EUR
|
4,157,000
EUR
|
17,674,000
EUR
|
1,256,000
EUR
|
1,230,000
EUR
|
27,537,000
EUR
|
884,000
EUR
|
2,268,000
EUR
|
5,353,000
EUR
|
17,674,000
EUR
|
49,180,000
EUR
|
884,000
EUR
|
49,180,000
EUR
|
5,353,000
EUR
|
27,537,000
EUR
|
2,268,000
EUR
|
17,674,000
EUR
|
18,491,000
EUR
|
17,674,000
EUR
|
40,247,000
EUR
|
1,648,000
EUR
|
4,846,000
EUR
|
884,000
EUR
|
| Liabilities [abstract] | ||||||||||||||||||||||||
| Liabilities |
102,742,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
86,451,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
163,258,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
135,631,000
EUR
|
— | — | — | — | — | — | — | — | — | — |