Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
338,051,000
EUR
|
331,709,000
EUR
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets other than goodwill |
4,952,000
EUR
|
6,248,000
EUR
|
— |
| Trade and other current receivables [abstract] | |||
| Current trade receivables |
10,200,000
EUR
|
2,211,000
EUR
|
— |
| Current prepayments and current accrued income other than current contract assets [abstract] | |||
| Current prepayments [abstract] | |||
| Current prepayments |
1,127,000
EUR
|
988,000
EUR
|
— |
| Other current receivables |
9,969,000
EUR
|
3,284,000
EUR
|
— |
| Current prepayments and current accrued income including current contract assets [abstract] | |||
| Categories of non-current financial assets [abstract] | |||
| Non-current financial assets at fair value through other comprehensive income [abstract] | |||
| Non-current financial assets at fair value through other comprehensive income |
781,000
EUR
|
1,089,000
EUR
|
— |
| Categories of current financial assets [abstract] | |||
| Current loans and receivables |
43,594,000
EUR
|
1,000,000
EUR
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
7,000
EUR
|
26,000
EUR
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
1,819,000
EUR
|
33,000
EUR
|
30,000
EUR
|
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
51,452,000
EUR
|
65,677,000
EUR
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current portion of non-current borrowings |
14,225,000
EUR
|
14,225,000
EUR
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| 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 advances received, representing current contract liabilities for performance obligations satisfied at point in time |
10,328,000
EUR
|
5,399,000
EUR
|
— |
| Trade and other current payables |
59,454,000
EUR
|
25,234,000
EUR
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Other non-current liabilities |
2,270,000
EUR
|
1,677,000
EUR
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Other current liabilities |
10,886,000
EUR
|
7,398,000
EUR
|
— |
| Issued capital [abstract] | |||
| Issued capital |
146,256,000
EUR
|
146,256,000
EUR
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
20,013,000
EUR
|
25,432,000
EUR
|
— |
| Miscellaneous equity [abstract] | |||
| Statutory reserve |
14,626,000
EUR
|
14,626,000
EUR
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
489,825,000
EUR
|
414,353,000
EUR
|
— |
| Liabilities |
268,317,000
EUR
|
196,316,000
EUR
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
122,538,000
EUR
|
38,965,000
EUR
|
— |
| Current liabilities |
121,562,000
EUR
|
66,116,000
EUR
|
— |
| Assets less current liabilities [abstract] |