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 |
145,800,000
EUR
|
150,686,000
EUR
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets other than goodwill |
793,000
EUR
|
456,000
EUR
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | |||
| Investments in subsidiaries reported in separate financial statements |
-
EUR
|
-
EUR
|
— |
| Investments in associates reported in separate financial statements |
261,000
EUR
|
226,000
EUR
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
14,741,000
EUR
|
11,643,000
EUR
|
— |
| Current prepayments and current accrued income including current contract assets [abstract] | |||
| Current accrued income including current contract assets [abstract] | |||
| Current contract assets |
328,000
EUR
|
612,000
EUR
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
72,423,000
EUR
|
61,517,000
EUR
|
51,076,000
EUR
|
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Non-current portion of non-current loans received |
137,451,000
EUR
|
116,044,000
EUR
|
— |
| Current borrowings and current portion of non-current borrowings, by type [abstract] | |||
| Current loans received and current portion of non-current loans received |
5,689,000
EUR
|
3,879,000
EUR
|
— |
| 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 |
5,468,000
EUR
|
5,771,000
EUR
|
— |
| Trade and other current payables [abstract] | |||
| 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 |
4,375,000
EUR
|
3,838,000
EUR
|
— |
| Trade and other current payables |
5,871,000
EUR
|
3,695,000
EUR
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Current derivative financial liabilities |
-
EUR
|
15,000
EUR
|
— |
| Issued capital [abstract] | |||
| Issued capital |
110,315,000
EUR
|
110,315,000
EUR
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
4,981,000
EUR
|
64,126,000
EUR
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of exchange differences on translation |
131,000
EUR
|
82,000
EUR
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
573,933,000
EUR
|
572,081,000
EUR
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
92,883,000
EUR
|
78,841,000
EUR
|
— |
| Current liabilities |
71,223,000
EUR
|
61,416,000
EUR
|
— |
| Assets less current liabilities [abstract] |