Issued Shares
| Concept | As at 2023-12-20 | As at 2023-12-20 | As at 2023-12-20 | As at 2023-12-20 | As at 2023-12-20 | As at 2023-12-20 | As at 2023-12-20 | 
|---|---|---|---|---|---|---|---|
| Issued shares | |||||||
| Issued shares | |||||||
| Number of shares | 
                                                5,200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                9,600
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                741,200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                756,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Number of voting rights | — | — | 
                                                
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
                                                7,412
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
                                                7,412
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Description |  |  |  |  |  |  | — |