Disclosure Of Income Tax [Text Block]
| Concept | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2022-01-01 to 2022-12-31 | As at 2022-12-31 | 
|---|---|---|---|---|
| Disclosure of income tax [text block] | — |  | — | — | 
| Major components of tax expense (income) [abstract] | ||||
| Tax expense (income) | — | 
                                                109,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                371,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
| Disclosure of temporary difference, unused tax losses and unused tax credits [text block] | — | — | — | — | 
| Disclosure of temporary difference, unused tax losses and unused tax credits [abstract] | ||||
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||||
| Deferred tax assets and liabilities [abstract] | ||||
| Deferred tax liabilities | 
                                                463,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                572,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |