Treasury Shares, Etc.
| Concept | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 
|---|---|---|---|
| Treasury shares, etc. | |||
| Treasury shares, etc. | |||
| Name of shareholder | — | 
                                                株式会社木村製作所
                                                
                                             | 
                                                UBE株式会社
                                                
                                             | 
| Address of shareholder | — | 
                                                兵庫県加古郡稲美町六分一字百丁歩1362番66号
                                                
                                             | 
                                                山口県宇部市大字小串1978番96号
                                                
                                             | 
| Number of shares held in own name | 
                                                9,079,300
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                100
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                9,079,200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Number of shares held in others' names | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Total number of shares held | 
                                                9,079,300
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                100
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                9,079,200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Shareholding ratio | 
                                                0.0855
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.0000
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.0855
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             |