Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||||
| Investment property [abstract] | ||||||
| Investment property |
18,092
EUR
|
-
EUR
|
16,620
EUR
|
-
EUR
|
— | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||||||
| Investments in subsidiaries reported in separate financial statements |
EUR
|
13,130
EUR
|
EUR
|
11,436
EUR
|
— | — |
| Trade and other current receivables [abstract] | ||||||
| Current prepayments and current accrued income other than current contract assets [abstract] | ||||||
| Current prepayments [abstract] | ||||||
| Current prepayments |
2,000
EUR
|
2,000
EUR
|
1,000
EUR
|
1,000
EUR
|
— | — |
| Trade and other current receivables |
126,000
EUR
|
10,000
EUR
|
170,000
EUR
|
19,000
EUR
|
— | — |
| Current prepayments and current accrued income including current contract assets [abstract] | ||||||
| Categories of non-current financial assets [abstract] | ||||||
| Non-current financial assets at amortised cost |
EUR
|
3,006
EUR
|
EUR
|
3,529
EUR
|
— | — |
| Cash and cash equivalents [abstract] | ||||||
| Cash and cash equivalents |
199,000
EUR
|
61,000
EUR
|
144,000
EUR
|
27,000
EUR
|
302,000
EUR
|
31,000
EUR
|
| Miscellaneous current assets [abstract] | ||||||
| Current interest receivable |
EUR
|
30,000
EUR
|
EUR
|
18,000
EUR
|
— | — |
| Trade and other current payables [abstract] | ||||||
| Current trade payables |
47,000
EUR
|
2,000
EUR
|
67,000
EUR
|
5,000
EUR
|
— | — |
| Current accruals and current deferred income including current contract liabilities [abstract] | ||||||
| Current deferred income including current contract liabilities [abstract] | ||||||
| Current deferred income other than current contract liabilities | — | — | — | — | — | — |
| Rent deferred income classified as current |
-
EUR
|
-
EUR
|
8,000
EUR
|
-
EUR
|
— | — |
| Miscellaneous current liabilities [abstract] | ||||||
| Other current liabilities |
96,000
EUR
|
90,000
EUR
|
66,000
EUR
|
66,000
EUR
|
— | — |
| Issued capital [abstract] | ||||||
| Issued capital |
955,000
EUR
|
955,000
EUR
|
955,000
EUR
|
955,000
EUR
|
— | — |
| Retained earnings [abstract] | ||||||
| Retained earnings |
10,759
EUR
|
10,785
EUR
|
9,566
EUR
|
9,592
EUR
|
— | — |
| Net assets (liabilities) [abstract] | ||||||
| Assets |
18,419
EUR
|
16,239
EUR
|
16,935
EUR
|
15,030
EUR
|
— | — |
| Liabilities |
2,284
EUR
|
104,000
EUR
|
1,993
EUR
|
88,000
EUR
|
— | — |
| Net current assets (liabilities) [abstract] | ||||||
| Current assets |
327,000
EUR
|
103,000
EUR
|
315,000
EUR
|
65,000
EUR
|
— | — |
| Current liabilities |
261,000
EUR
|
104,000
EUR
|
195,000
EUR
|
88,000
EUR
|
— | — |
| Assets less current liabilities [abstract] |