Disclosure Of Entity's Operating Segments [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 entity's operating segments [text block] | — |  | — | — | 
| Disclosure of operating segments [text block] | — | — | — | — | 
| Disclosure of operating segments [abstract] | ||||
| Disclosure of operating segments [line items] | ||||
| Revenue | — | 
                                                2,693,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                3,382,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
| Depreciation and amortisation expense | — | 
                                                899,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                867,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
| Tax expense (income) | — | 
                                                109,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                371,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
| Profit (loss) before tax | — | 
                                                1,478,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                26,446,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
| Assets | 
                                                9,660,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                11,012,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Cash flows from (used in) operating activities | — | 
                                                698,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                2,701,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
| Cash flows from (used in) investing activities | — | 
                                                11,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                99,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
| Cash flows from (used in) financing activities | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                5,978,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
| Disclosure of products and services [text block] | — | — | — | — | 
| Disclosure of products and services [abstract] | ||||
| Disclosure of products and services [line items] | ||||
| Disclosure of geographical areas [text block] | — | — | — | — | 
| Disclosure of geographical areas [abstract] | ||||
| Disclosure of geographical areas [line items] | ||||
| Disclosure of major customers [text block] | — | — | — | — | 
| Disclosure of major customers [abstract] | ||||
| Disclosure of major customers [line items] |