Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2020-12-31 |
As at 2020-01-01 |
As at 2019-12-31 |
As at 2019-01-01 |
|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||
| Property, plant and equipment [abstract] | ||||
| Property, plant and equipment |
27,840,000
EUR
|
— |
30,383,000
EUR
|
— |
| Intangible assets and goodwill [abstract] | ||||
| Intangible assets other than goodwill [abstract] | ||||
| Intangible assets other than goodwill |
50,660,000
EUR
|
— |
42,593,000
EUR
|
— |
| Goodwill |
44,484,000
EUR
|
— |
45,289,000
EUR
|
— |
| Miscellaneous non-current assets [abstract] | ||||
| Other non-current assets |
1,043,000
EUR
|
— |
2,255,000
EUR
|
— |
| Trade and other current receivables [abstract] | ||||
| Current trade receivables |
93,218,000
EUR
|
— |
81,420,000
EUR
|
— |
| Current prepayments and current accrued income other than current contract assets [abstract] | ||||
| Current prepayments [abstract] | ||||
| Current prepayments |
2,596,000
EUR
|
— |
3,608,000
EUR
|
— |
| Other current receivables |
7,930,000
EUR
|
— |
9,132,000
EUR
|
— |
| Current prepayments and current accrued income including current contract assets [abstract] | ||||
| Classes of current inventories [abstract] | ||||
| Current inventories |
51,645,000
EUR
|
— |
46,578,000
EUR
|
— |
| Classes of current inventories, alternative [abstract] | ||||
| Cash and cash equivalents [abstract] | ||||
| Cash and cash equivalents |
375,406,000
EUR
|
278,398,000
EUR
|
278,398,000
EUR
|
295,539,000
EUR
|
| Miscellaneous current assets [abstract] | ||||
| Current investments | — | — | — | — |
| Short-term deposits, not classified as cash equivalents |
223,299,000
EUR
|
— |
130,000,000
EUR
|
— |
| Borrowings [abstract] | ||||
| Non-current portion of non-current borrowings |
399,956,000
EUR
|
— |
277,067,000
EUR
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | ||||
| Current portion of non-current borrowings |
-
EUR
|
— |
515,000
EUR
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | ||||
| Trade and other current payables [abstract] | ||||
| Current trade payables |
44,017,000
EUR
|
— |
30,278,000
EUR
|
— |
| Other current payables |
28,052,000
EUR
|
— |
24,982,000
EUR
|
— |
| Miscellaneous non-current liabilities [abstract] | ||||
| Other non-current liabilities |
777,000
EUR
|
— |
1,070,000
EUR
|
— |
| Miscellaneous current liabilities [abstract] | ||||
| Other current liabilities |
13,719,000
EUR
|
— |
16,597,000
EUR
|
— |
| Issued capital [abstract] | ||||
| Issued capital |
786,000
EUR
|
— |
801,000
EUR
|
— |
| Retained earnings [abstract] | ||||
| Retained earnings |
127,425,000
EUR
|
— |
77,417,000
EUR
|
— |
| Net assets (liabilities) [abstract] | ||||
| Assets |
911,356,000
EUR
|
— |
696,880,000
EUR
|
— |
| Net current assets (liabilities) [abstract] | ||||
| Current assets |
755,532,000
EUR
|
— |
550,250,000
EUR
|
— |
| Current liabilities |
101,486,000
EUR
|
— |
86,628,000
EUR
|
— |
| Assets less current liabilities [abstract] |