Issued Shares
| Concept | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Issued shares | ||||||||||
| Issued shares | ||||||||||
| Number of shares | — | — | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                6,924,400
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                104,400
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                6,545,100
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                274,900
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | — | 
| Number of voting rights | — | — | 
                                                
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                65,451
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
                                                65,451
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | — | — | 
| Description | 
                                                単元株式数100株
                                                
                                             | 
                                                同上
                                                
                                             |  | — | — | — | — |  |  |  |