Issued Shares
| Concept | 
                                    
                                        As at 2024-02-07  | 
                            
                                
                                    
                                        As at 2024-02-07  | 
                            
                                
                                    
                                        As at 2024-02-07  | 
                            
                        
|---|---|---|---|
| Issued shares | |||
| Issued shares | |||
| Class | 
                                        
                                             
                                                A種優先株式
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                普通株式
                                                
                                             
                                        
                                     | 
                                
                            
| Number of issued shares as of fiscal year end | 
                                        
                                             
                                                125,500
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                15,428,869
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                15,303,369
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                            
| Number of issued shares as of filing date | 
                                        
                                             
                                                125,500
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                15,428,869
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                15,303,369
                                                
                                                    
                                                        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 | 
                                        
                                             
                                                (注)
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                単元株式数は、100株であります。
                                                
                                             
                                        
                                     |