Directors (And Other Officers)
| Concept | 
                                    
                                        As at 2025-06-26  | 
                            
                                
                                    
                                        As at 2025-06-26  | 
                            
                                
                                    
                                        As at 2025-06-26  | 
                            
                                
                                    
                                        As at 2025-06-26  | 
                            
                                
                                    
                                        As at 2025-06-26  | 
                            
                                
                                    
                                        As at 2025-06-26  | 
                            
                                
                                    
                                        As at 2025-06-26  | 
                            
                                
                                    
                                        As at 2025-06-26  | 
                            
                                
                                    
                                        As at 2025-06-26  | 
                            
                        
|---|---|---|---|---|---|---|---|---|---|
| Directors (and other officers) | |||||||||
| Information about directors (and corporate auditors) | |||||||||
| Official title or position | 
                                        
                                             
                                                監査役
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                取締役
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                代表取締役会長
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                取締役副社長
情報開示担当
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                取締役
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                監査役
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                常勤監査役
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                代表取締役社長
                                                
                                             
                                        
                                     | 
                                
                            
| Name | 
                                        
                                             
                                                外山 勝保
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                甲賀 武
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                阿部 昭彦
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                廣谷 慎吾
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                尾高 雅美
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                佐藤 宏
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                吉田 清滋
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                鈴木 達
                                                
                                             
                                        
                                     | 
                                
                            
| Date of birth | 
                                        
                                             
                                                1963-01-11
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1968-05-11
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                1947-09-05
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1962-05-30
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1964-05-15
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1951-09-26
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1949-05-11
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1959-04-03
                                                
                                             
                                        
                                     | 
                                
                            
| Career summary | — | ||||||||
| Term of office | 
                                        
                                             
                                                (注)4
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)3
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                (注)3
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)3
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)3
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)4
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)4
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)3
                                                
                                             
                                        
                                     | 
                                
                            
| Number of shares held (Ordinary shares) | 
                                        
                                             
                                                0
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                2,749
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                870,882
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                764,800
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                15,397
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                6,843
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                2,250
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                78,843
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     |