Issued Shares
| Concept | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Issued shares | ||||||||||
| Issued shares | ||||||||||
| Number of shares | 
                                                4,776,900
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                8,500
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                633,800
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | — | 
                                                4,134,600
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Number of voting rights | 
                                                41,346
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                41,346
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Description | — |  | — | 
                                                同上
                                                
                                             |  | — | 
                                                権利内容に何ら限定のない当社における標準となる株式
                                                
                                             |  |  | — |