Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||||
| Property, plant and equipment [abstract] | ||||||
| Property, plant and equipment |
1,164,000
EUR
|
1,156,000
EUR
|
1,255,000
EUR
|
1,246,000
EUR
|
— | — |
| Intangible assets and goodwill [abstract] | ||||||
| Intangible assets other than goodwill [abstract] | ||||||
| Intangible assets other than goodwill |
89,000
EUR
|
89,000
EUR
|
77,000
EUR
|
77,000
EUR
|
— | — |
| Investment property [abstract] | ||||||
| Investment property |
374,000
EUR
|
374,000
EUR
|
374,000
EUR
|
374,000
EUR
|
— | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||||||
| Investments in subsidiaries reported in separate financial statements |
-
EUR
|
3,000
EUR
|
-
EUR
|
3,000
EUR
|
— | — |
| Trade and other current receivables [abstract] | ||||||
| Current prepayments and current accrued income other than current contract assets [abstract] | ||||||
| Current prepayments [abstract] | ||||||
| Current prepayments |
805,000
EUR
|
804,000
EUR
|
268,000
EUR
|
261,000
EUR
|
— | — |
| Other current receivables |
147,000
EUR
|
139,000
EUR
|
117,000
EUR
|
84,000
EUR
|
— | — |
| Trade and other current receivables |
1,154,000
EUR
|
1,154,000
EUR
|
1,041,000
EUR
|
1,041,000
EUR
|
— | — |
| Current prepayments and current accrued income including current contract assets [abstract] | ||||||
| Categories of current financial assets [abstract] | ||||||
| Current loans and receivables |
1,424,000
EUR
|
1,424,000
EUR
|
-
EUR
|
-
EUR
|
— | — |
| Classes of current inventories [abstract] | ||||||
| Current inventories |
5,105,000
EUR
|
5,103,000
EUR
|
4,204,000
EUR
|
4,231,000
EUR
|
— | — |
| Classes of current inventories, alternative [abstract] | ||||||
| Cash and cash equivalents [abstract] | ||||||
| Cash and cash equivalents |
2,136,000
EUR
|
2,084,000
EUR
|
2,873,000
EUR
|
2,867,000
EUR
|
371,000
EUR
|
381,000
EUR
|
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | ||||||
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners |
-
EUR
|
-
EUR
|
60,000
EUR
|
60,000
EUR
|
— | — |
| Borrowings [abstract] | ||||||
| Non-current portion of non-current borrowings |
1,080,000
EUR
|
1,080,000
EUR
|
1,330,000
EUR
|
1,330,000
EUR
|
— | — |
| Current borrowings and current portion of non-current borrowings [abstract] | ||||||
| Current borrowings and current portion of non-current borrowings |
-
EUR
|
-
EUR
|
133,000
EUR
|
133,000
EUR
|
— | — |
| Non-current portion of non-current borrowings, by type [abstract] | ||||||
| Current borrowings and current portion of non-current borrowings, by type [abstract] | ||||||
| Trade and other current payables [abstract] | ||||||
| Current trade payables |
450,000
EUR
|
298,000
EUR
|
1,042,000
EUR
|
926,000
EUR
|
— | — |
| Current payables to related parties |
443,000
EUR
|
795,000
EUR
|
17,000
EUR
|
411,000
EUR
|
— | — |
| Current accruals and current deferred income including current contract liabilities [abstract] | ||||||
| Current deferred income including current contract liabilities [abstract] | ||||||
| Current contract liabilities [abstract] | ||||||
| Current contract liabilities |
24,000
EUR
|
24,000
EUR
|
66,000
EUR
|
66,000
EUR
|
— | — |
| Accruals classified as current |
11,000
EUR
|
40,000
EUR
|
10,000
EUR
|
7,000
EUR
|
— | — |
| Miscellaneous non-current liabilities [abstract] | ||||||
| Other non-current liabilities |
-
EUR
|
-
EUR
|
50,000
EUR
|
-
EUR
|
— | — |
| Miscellaneous current liabilities [abstract] | ||||||
| Other current liabilities |
123,000
EUR
|
62,000
EUR
|
152,000
EUR
|
70,000
EUR
|
— | — |
| Issued capital [abstract] | ||||||
| Issued capital |
6,971,000
EUR
|
6,971,000
EUR
|
6,971,000
EUR
|
6,971,000
EUR
|
— | — |
| Retained earnings [abstract] | ||||||
| Retained earnings |
2,607,000
EUR
|
2,531,000
EUR
|
1,578,000
EUR
|
1,491,000
EUR
|
— | — |
| Net assets (liabilities) [abstract] | ||||||
| Assets |
12,771,000
EUR
|
12,642,000
EUR
|
12,034,000
EUR
|
11,896,000
EUR
|
— | — |
| Net current assets (liabilities) [abstract] | ||||||
| Current assets |
10,771,000
EUR
|
10,708,000
EUR
|
8,563,000
EUR
|
8,544,000
EUR
|
— | — |
| Current liabilities |
1,500,000
EUR
|
1,466,000
EUR
|
1,694,000
EUR
|
1,749,000
EUR
|
— | — |
| Assets less current liabilities [abstract] |