Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
35,751,000
EUR
|
37,157,000
EUR
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets other than goodwill |
935,000
EUR
|
1,185,000
EUR
|
— |
| Goodwill |
899,000
EUR
|
899,000
EUR
|
— |
| Investments accounted for using equity method [abstract] | |||
| Investments accounted for using equity method |
176,000
EUR
|
174,000
EUR
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
9,098,000
EUR
|
18,709,000
EUR
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
238,000
EUR
|
122,000
EUR
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
6,141,000
EUR
|
7,003,000
EUR
|
4,471,000
EUR
|
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
10,314,000
EUR
|
18,624,000
EUR
|
— |
| Categories of non-current financial liabilities [abstract] | |||
| Non-current financial liabilities |
15,568,000
EUR
|
25,106,000
EUR
|
— |
| Categories of current financial liabilities [abstract] | |||
| Current financial liabilities |
10,004,000
EUR
|
1,924,000
EUR
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Other non-current liabilities |
108,000
EUR
|
106,000
EUR
|
— |
| Issued capital [abstract] | |||
| Issued capital |
4,215,000
EUR
|
4,215,000
EUR
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
29,368,000
EUR
|
28,386,000
EUR
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of exchange differences on translation |
6,000
EUR
|
8,000
EUR
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
69,678,000
EUR
|
81,705,000
EUR
|
— |
| Liabilities |
45,531,000
EUR
|
55,901,000
EUR
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
15,482,000
EUR
|
25,866,000
EUR
|
— |
| Current liabilities |
20,908,000
EUR
|
21,478,000
EUR
|
— |
| Assets less current liabilities [abstract] |