Treasury Shares, Etc.
| Concept | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | 
|---|---|---|---|
| Treasury shares, etc. | |||
| Treasury shares, etc. | |||
| Name of shareholder | — | 
                                                株式会社大設
                                                
                                             | 
                                                アジア航測株式会社
                                                
                                             | 
| Address of shareholder | — | 
                                                兵庫県姫路市広畑区蒲田四丁目140番地
                                                
                                             | 
                                                東京都新宿区西新宿六丁目14番1号 新宿グリーンタワービル
                                                
                                             | 
| Number of shares held in own name | 
                                                473,900
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                1,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                472,900
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Number of shares held in others' names | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Total number of shares held | 
                                                473,900
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                1,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                472,900
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Shareholding ratio | 
                                                0.0255
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.0001
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.0254
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             |