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 |
13 366
EUR
|
13 295
EUR
|
13 653
EUR
|
13 499
EUR
|
— | — |
| Intangible assets and goodwill [abstract] | ||||||
| Intangible assets other than goodwill [abstract] | ||||||
| Intangible assets other than goodwill |
1 567
EUR
|
1 567
EUR
|
1 537
EUR
|
1 537
EUR
|
— | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||||||
| Investments in subsidiaries reported in separate financial statements |
-
EUR
|
424,000
EUR
|
-
EUR
|
424,000
EUR
|
— | — |
| Trade and other current receivables [abstract] | ||||||
| Current trade receivables |
4 247
EUR
|
4 181
EUR
|
3 966
EUR
|
3 943
EUR
|
— | — |
| Current prepayments and current accrued income other than current contract assets [abstract] | ||||||
| Current prepayments [abstract] | ||||||
| Current advances to suppliers |
493,000
EUR
|
493,000
EUR
|
816,000
EUR
|
816,000
EUR
|
— | — |
| Other current receivables |
250,000
EUR
|
248,000
EUR
|
246,000
EUR
|
196,000
EUR
|
— | — |
| Current prepayments and current accrued income including current contract assets [abstract] | ||||||
| Classes of current inventories [abstract] | ||||||
| Current inventories |
6 142
EUR
|
6 127
EUR
|
4 135
EUR
|
4 081
EUR
|
— | — |
| Classes of current inventories, alternative [abstract] | ||||||
| Cash and cash equivalents [abstract] | ||||||
| Cash and cash equivalents |
129,000
EUR
|
53,000
EUR
|
309,000
EUR
|
249,000
EUR
|
98,000
EUR
|
138,000
EUR
|
| Borrowings [abstract] | ||||||
| Non-current portion of non-current borrowings |
8 005
EUR
|
8 005
EUR
|
8 411
EUR
|
8 405
EUR
|
— | — |
| Current borrowings and current portion of non-current borrowings [abstract] | ||||||
| Current borrowings and current portion of non-current borrowings |
2 502
EUR
|
2 502
EUR
|
764,000
EUR
|
746,000
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 |
289,000
EUR
|
289,000
EUR
|
392,000
EUR
|
392,000
EUR
|
— | — |
| Trade and other current payables [abstract] | ||||||
| Current trade payables |
8 204
EUR
|
8 229
EUR
|
5 881
EUR
|
5 813
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 advances received, representing current contract liabilities for performance obligations satisfied at point in time |
93,000
EUR
|
85,000
EUR
|
90,000
EUR
|
25,000
EUR
|
— | — |
| Miscellaneous non-current liabilities [abstract] | ||||||
| Other non-current liabilities |
-
EUR
|
-
EUR
|
30,000
EUR
|
30,000
EUR
|
— | — |
| Miscellaneous current liabilities [abstract] | ||||||
| Other current liabilities |
382,000
EUR
|
363,000
EUR
|
305,000
EUR
|
299,000
EUR
|
— | — |
| Issued capital [abstract] | ||||||
| Issued capital |
6 736
EUR
|
6 736
EUR
|
6 736
EUR
|
6 736
EUR
|
— | — |
| Retained earnings [abstract] | ||||||
| Retained earnings |
11 507
EUR
|
11 254
EUR
|
10 652
EUR
|
10 354
EUR
|
— | — |
| Accumulated other comprehensive income [abstract] | ||||||
| Revaluation surplus |
7 675
EUR
|
7 675
EUR
|
8 521
EUR
|
8 521
EUR
|
— | — |
| Reserve of exchange differences on translation |
52,000
EUR
|
-
EUR
|
54,000
EUR
|
-
EUR
|
— | — |
| Miscellaneous equity [abstract] | ||||||
| Statutory reserve |
718,000
EUR
|
674,000
EUR
|
991,000
EUR
|
946,000
EUR
|
— | — |
| Net assets (liabilities) [abstract] | ||||||
| Assets |
26 303
EUR
|
26 497
EUR
|
24 800
EUR
|
24 883
EUR
|
— | — |
| Liabilities |
22 733
EUR
|
22 666
EUR
|
19 258
EUR
|
19 034
EUR
|
— | — |
| Net current assets (liabilities) [abstract] | ||||||
| Current assets |
11 261
EUR
|
11 102
EUR
|
9 472
EUR
|
9 285
EUR
|
— | — |
| Current liabilities |
12 367
EUR
|
12 316
EUR
|
8 398
EUR
|
8 188
EUR
|
— | — |
| Assets less current liabilities [abstract] |