Statement Of Financial Position [Abstract]
| Concept | As at 2024-09-30 | As at 2024-09-30 | As at 2024-09-30 | As at 2024-09-30 | As at 2024-09-30 | As at 2024-09-30 | As at 2024-09-30 | As at 2024-09-30 | As at 2024-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2022-09-30 | As at 2022-09-30 | As at 2022-09-30 | As at 2022-09-30 | As at 2022-09-30 | As at 2022-09-30 | As at 2022-09-30 | As at 2022-09-30 | As at 2022-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||||||||
| Property, plant and equipment | 
                                                1,518
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                2,048
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Goodwill | 
                                                52,303
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                69,266
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Intangible assets other than goodwill | 
                                                7,850
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                9,689
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Deferred tax assets | 
                                                6,818
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                7,588
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Cash and cash equivalents | 
                                                12,080
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                6,900
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                6,058
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Assets | 
                                                127,604
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                162,736
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Equity and liabilities [abstract] | |||||||||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||||||||
| Issued capital | 
                                                41,153
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                37,412
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Retained earnings | 
                                                14,987
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                663,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | 
                                                38,358
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Other reserves | 
                                                663,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                663,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Equity | 
                                                48,397
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                622,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                41,153
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                48,397
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                144,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                8,884
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                663,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                14,987
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                784,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                344,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                9,689
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                67,184
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                38,358
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                37,412
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                67,184
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                10,001
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                71,793
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                43,345
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                54,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                37,412
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                663,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                428,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Liabilities [abstract] | |||||||||||||||||||||||||||
| Deferred tax liabilities | 
                                                1,674
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                2,309
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Liabilities | 
                                                79,207
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                95,551
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Equity and liabilities | 
                                                127,604
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                162,736
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — |