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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||
| Assets [abstract] | ||||||||||||
| Property, plant and equipment |
22,770,000
EUR
|
— | — | — | — |
18,514,000
EUR
|
— | — | — | — | — | — |
| Right-of-use assets |
373,000
EUR
|
— | — | — | — |
402,000
EUR
|
— | — | — | — | — | — |
| Intangible assets other than goodwill |
103,000
EUR
|
— | — | — | — |
130,000
EUR
|
— | — | — | — | — | — |
| Deferred tax assets |
104,000
EUR
|
— | — | — | — |
86,000
EUR
|
— | — | — | — | — | — |
| Cash and cash equivalents |
153,000
EUR
|
— | — | — | — |
190,000
EUR
|
— | — | — |
2,685,000
EUR
|
— | — |
| Assets |
92,575,000
EUR
|
— | — | — | — |
64,131,000
EUR
|
— | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||
| Equity [abstract] | ||||||||||||
| Issued capital |
4,000,000
EUR
|
— | — | — | — |
4,000,000
EUR
|
— | — | — | — | — | — |
| Equity attributable to owners of parent |
47,973,000
EUR
|
— | — | — | — |
35,511,000
EUR
|
— | — | — | — | — | — |
| Equity |
47,973,000
EUR
|
47,973,000
EUR
|
43,973,000
EUR
|
4,000,000
EUR
|
35,511,000
EUR
|
35,511,000
EUR
|
4,000,000
EUR
|
31,511,000
EUR
|
35,491,000
EUR
|
35,491,000
EUR
|
31,491,000
EUR
|
4,000,000
EUR
|
| Liabilities [abstract] | ||||||||||||
| Deferred tax liabilities |
219,000
EUR
|
— | — | — | — |
-
EUR
|
— | — | — | — | — | — |
| Liabilities |
44,602,000
EUR
|
— | — | — | — |
28,620,000
EUR
|
— | — | — | — | — | — |
| Equity and liabilities |
92,575,000
EUR
|
— | — | — | — |
64,131,000
EUR
|
— | — | — | — | — | — |