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 | 
|---|---|---|---|---|---|---|---|---|---|
| Issued shares | |||||||||
| Issued shares | |||||||||
| Number of shares | 
                                                17,014,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                7,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | — | 
                                                17,007,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Number of voting rights | 
                                                170,070
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                170,070
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Description | — |  | — | 
                                                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
                                                
                                             |  |  |  | 
                                                同上
                                                
                                             | — |