Issued Shares
| Concept | 
                                    
                                        As at 2024-05-13  | 
                            
                                
                                    
                                        As at 2024-05-13  | 
                            
                                
                                    
                                        As at 2024-05-13  | 
                            
                        
|---|---|---|---|
| Issued shares | |||
| Issued shares | |||
| Class | — | 
                                        
                                             
                                                普通株式
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                A種優先株式
                                                
                                             
                                        
                                     | 
                                
                            
| Number of issued shares as of fiscal year end | 
                                        
                                             
                                                13,884,263
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                13,878,263
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                6,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                            
| Number of issued shares as of filing date | 
                                        
                                             
                                                13,884,263
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                13,878,263
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                6,000
                                                
                                                    
                                                        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
名古屋証券取引所
プレミア市場
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                非上場
                                                
                                             
                                        
                                     | 
                                
                            
| 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であります。
なお、単元株式数は100株であります。
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                単元株式数1株(注)
                                                
                                             
                                        
                                     |