Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets other than goodwill |
416,000
EUR
|
1 556
EUR
|
— |
| Trade and other non-current receivables [abstract] | |||
| Trade and other non-current receivables |
10 554
EUR
|
14 099
EUR
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
55 557
EUR
|
38 346
EUR
|
— |
| Trade and other receivables [abstract] | |||
| Trade and other receivables |
66 111
EUR
|
52 445
EUR
|
48 241
EUR
|
| Categories of non-current financial assets [abstract] | |||
| Non-current financial assets |
9 796
EUR
|
35 119
EUR
|
— |
| Categories of current financial assets [abstract] | |||
| Current financial assets |
21 851
EUR
|
17 260
EUR
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
70 605
EUR
|
84 225
EUR
|
103 756
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 contract liabilities [abstract] | |||
| Non-current contract liabilities |
4 618
EUR
|
7 921
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 |
5 865
EUR
|
6 560
EUR
|
— |
| Trade and other current payables |
17 018
EUR
|
20 911
EUR
|
— |
| Trade and other payables [abstract] | |||
| Accruals and deferred income including contract liabilities [abstract] | |||
| Deferred income including contract liabilities [abstract] | |||
| Deferred income including contract liabilities |
10 483
EUR
|
14 481
EUR
|
37 913
EUR
|
| Trade and other payables |
17 018
EUR
|
20 911
EUR
|
28 573
EUR
|
| Categories of non-current financial liabilities [abstract] | |||
| Non-current financial liabilities |
30 957
EUR
|
40 149
EUR
|
— |
| Categories of current financial liabilities [abstract] | |||
| Current financial liabilities |
8 936
EUR
|
2 102
EUR
|
— |
| Issued capital [abstract] | |||
| Issued capital |
4 044
EUR
|
4 011
EUR
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of remeasurements of defined benefit plans |
495,000
EUR
|
819,000
EUR
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
184 193
EUR
|
207 863
EUR
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
148 012
EUR
|
139 831
EUR
|
— |
| Current liabilities |
39 637
EUR
|
41 338
EUR
|
— |
| Assets less current liabilities [abstract] |