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 |
48,771,000
EUR
|
11,090,000
EUR
|
46,207,000
EUR
|
13,196,000
EUR
|
— | — |
| Intangible assets and goodwill [abstract] | ||||||
| Intangible assets and goodwill |
4,186,000
EUR
|
14,000
EUR
|
6,935,000
EUR
|
20,000
EUR
|
— | — |
| Investment property [abstract] | ||||||
| Investment property |
-
EUR
|
6,780,000
EUR
|
-
EUR
|
5,395,000
EUR
|
— | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||||||
| Investments in subsidiaries reported in separate financial statements |
-
EUR
|
10,984,000
EUR
|
-
EUR
|
10,713,000
EUR
|
— | — |
| Trade and other non-current receivables [abstract] | ||||||
| Trade and other non-current receivables |
288,000
EUR
|
1,116,000
EUR
|
226,000
EUR
|
226,000
EUR
|
— | — |
| Trade and other current receivables [abstract] | ||||||
| Current prepayments and current accrued income other than current contract assets [abstract] | ||||||
| Current prepayments [abstract] | ||||||
| Current prepayments |
622,000
EUR
|
456,000
EUR
|
736,000
EUR
|
705,000
EUR
|
— | — |
| Trade and other current receivables |
14,271,000
EUR
|
18,600,000
EUR
|
9,062,000
EUR
|
10,147,000
EUR
|
— | — |
| Current prepayments and current accrued income including current contract assets [abstract] | ||||||
| Classes of current inventories [abstract] | ||||||
| Current inventories |
17,625,000
EUR
|
8,046,000
EUR
|
11,693,000
EUR
|
6,436,000
EUR
|
— | — |
| Classes of current inventories, alternative [abstract] | ||||||
| Cash and cash equivalents [abstract] | ||||||
| Cash and cash equivalents |
799,000
EUR
|
579,000
EUR
|
181,000
EUR
|
155,000
EUR
|
231,000
EUR
|
298,000
EUR
|
| Borrowings [abstract] | ||||||
| Non-current portion of non-current borrowings |
17,050,000
EUR
|
2,285,000
EUR
|
2,951,000
EUR
|
2,779,000
EUR
|
— | — |
| Current borrowings and current portion of non-current borrowings [abstract] | ||||||
| Current borrowings and current portion of non-current borrowings |
6,420,000
EUR
|
3,941,000
EUR
|
18,083,000
EUR
|
3,996,000
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 non-current payables [abstract] | ||||||
| Non-current accruals and non-current deferred income including non-current contract liabilities [abstract] | ||||||
| Non-current deferred income including non-current contract liabilities [abstract] | ||||||
| Non-current deferred income other than non-current contract liabilities | — | — | — | — | — | — |
| Non-current government grants |
4,125,000
EUR
|
685,000
EUR
|
4,664,000
EUR
|
873,000
EUR
|
— | — |
| Trade and other non-current payables |
53,000
EUR
|
-
EUR
|
-
EUR
|
-
EUR
|
— | — |
| Trade and other current payables [abstract] | ||||||
| Trade and other current payables |
19,873,000
EUR
|
14,588,000
EUR
|
15,600,000
EUR
|
13,307,000
EUR
|
— | — |
| Issued capital [abstract] | ||||||
| Issued capital |
3,463,000
EUR
|
3,463,000
EUR
|
3,463,000
EUR
|
3,463,000
EUR
|
— | — |
| Retained earnings [abstract] | ||||||
| Retained earnings |
30,510,000
EUR
|
28,841,000
EUR
|
25,809,000
EUR
|
18,954,000
EUR
|
— | — |
| Net assets (liabilities) [abstract] | ||||||
| Assets |
87,974,000
EUR
|
59,264,000
EUR
|
76,898,000
EUR
|
48,843,000
EUR
|
— | — |
| Liabilities |
48,393,000
EUR
|
22,214,000
EUR
|
41,925,000
EUR
|
21,612,000
EUR
|
— | — |
| Net current assets (liabilities) [abstract] | ||||||
| Current assets |
33,317,000
EUR
|
27,681,000
EUR
|
21,672,000
EUR
|
17,443,000
EUR
|
— | — |
| Current liabilities |
26,762,000
EUR
|
18,830,000
EUR
|
33,987,000
EUR
|
17,615,000
EUR
|
— | — |
| Assets less current liabilities [abstract] |