Issued Shares
| Concept | 
                                    
                                        As at 2025-06-25  | 
                            
                                
                                    
                                        As at 2025-06-25  | 
                            
                        
|---|---|---|
| Issued shares | ||
| Issued shares | ||
| Class | 
                                        
                                             
                                                普通株式
                                                
                                             
                                        
                                     | 
                                
                                    — | 
| Number of issued shares as of fiscal year end | 
                                        
                                             
                                                6,712,758
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                6,712,758
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                            
| Number of issued shares as of filing date | 
                                        
                                             
                                                6,712,758
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                6,712,758
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                            
| Name of financial instruments exchange on which securities are listed or authorized financial instruments business association to which securities are registered | 
                                        
                                             
                                                東京証券取引所
スタンダード市場
                                                
                                             
                                        
                                     | 
                                
                                    — | 
| 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
単元株式数100株
                                                
                                             
                                        
                                     | 
                                
                                    — |