Issued Shares
| Concept | As at 2023-07-31 | As at 2023-07-31 | As at 2023-07-31 | As at 2023-07-31 | As at 2023-07-31 | As at 2023-07-31 | As at 2023-07-31 | As at 2023-07-31 | As at 2023-07-31 | As at 2023-07-31 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Issued shares | ||||||||||
| Issued shares | ||||||||||
| Number of shares | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                1,360,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                1,355,500
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | — | — | — | 
                                                2,300
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                2,200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Number of voting rights | — | — | 
                                                13,555
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                13,555
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | — | — | — | 
| Description |  |  | — |  | — | 
                                                1単元(100株)
未満の株式
                                                
                                             |  |  | — | — |