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 |
3, 0 81
EUR
|
3,404,000
EUR
|
3,907,000
EUR
|
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets other than goodwill |
31, 4 0 0
EUR
|
35,850,000
EUR
|
3 8,9 0 4
EUR
|
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
153,325,000
EUR
|
301,592,000
EUR
|
236, 56 4
EUR
|
| Miscellaneous assets [abstract] | |||
| Derivative financial assets | — | — | — |
| Derivative financial assets held for hedging |
3 ,1 8 0
EUR
|
324,000
EUR
|
496,000
EUR
|
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
4 6, 791
EUR
|
57,656,000
EUR
|
174 , 8 49
EUR
|
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings and current portion of non-current borrowings |
-
EUR
|
84,158,000
EUR
|
-
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 payables [abstract] | |||
| Trade payables |
6 , 314
EUR
|
1,426,000
EUR
|
9,9 32
EUR
|
| Miscellaneous non-current liabilities [abstract] | |||
| Non-current deposits from customers |
81, 610
EUR
|
82,793,000
EUR
|
63,6 89
EUR
|
| Miscellaneous current liabilities [abstract] | |||
| Current deposits from customers |
4 2 0 ,12 4
EUR
|
401,971,000
EUR
|
2 75, 8 33
EUR
|
| Other current liabilities |
11 , 5 30
EUR
|
15,160,000
EUR
|
1 1, 89 8
EUR
|
| Miscellaneous liabilities [abstract] | |||
| Derivative financial liabilities | — | — | — |
| Derivative financial liabilities held for hedging |
4 46
EUR
|
1,232,000
EUR
|
3,23 0
EUR
|
| Issued capital [abstract] | |||
| Issued capital |
4 0 ,13 4
EUR
|
40,134,000
EUR
|
40,134,000
EUR
|
| Retained earnings [abstract] | |||
| Retained earnings |
7 7, 6 79
EUR
|
70, 4 66
EUR
|
7 7, 93 1
EUR
|
| Accumulated other comprehensive income [abstract] | |||
| Reserve of exchange differences on translation |
3, 0 49
EUR
|
2,995,000
EUR
|
5,458,000
EUR
|
| Net assets (liabilities) [abstract] | |||
| Assets |
755, 228
EUR
|
8 24, 55 0
EUR
|
679, 49 8
EUR
|
| Liabilities |
573,269,000
EUR
|
649,748,000
EUR
|
549,694,000
EUR
|
| Net current assets (liabilities) [abstract] | |||
| Current assets |
5 76 , 3 4 5
EUR
|
6 80 ,49 4
EUR
|
5 76 , 6 6 3
EUR
|
| Current liabilities |
4 4 0 , 8 07
EUR
|
508,81 4
EUR
|
30 6,734
EUR
|
| Assets less current liabilities [abstract] |