Directors (And Other Officers)
| Concept | 
                                    
                                        As at 2025-06-23  | 
                            
                                
                                    
                                        As at 2025-06-23  | 
                            
                                
                                    
                                        As at 2025-06-23  | 
                            
                                
                                    
                                        As at 2025-06-23  | 
                            
                                
                                    
                                        As at 2025-06-23  | 
                            
                                
                                    
                                        As at 2025-06-23  | 
                            
                                
                                    
                                        As at 2025-06-23  | 
                            
                        
|---|---|---|---|---|---|---|---|
| Directors (and other officers) | |||||||
| Information about directors (and corporate auditors) | |||||||
| Official title or position | 
                                        
                                             
                                                取締役副社長
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                取締役(監査等委員)
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                代表取締役社長
                                                
                                             
                                        
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                                                取締役副社長
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                取締役(監査等委員)
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                取締役(監査等委員)
                                                
                                             
                                        
                                     | 
                                
                            
| Name | 
                                        
                                             
                                                佐々木  幹  夫
                                                
                                             
                                        
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                                                佐  多  俊  一
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                速  水  浩  二
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                篠  﨑  晃  一
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                飯  塚  孝  徳
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                廣  岡      穣
                                                
                                             
                                        
                                     | 
                                
                            
| Date of birth | 
                                        
                                             
                                                1959-10-28
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1969-08-02
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                1967-01-09
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1955-02-24
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1966-06-01
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1971-07-08
                                                
                                             
                                        
                                     | 
                                
                            
| Career summary | — | ||||||
| Term of office | 
                                        
                                             
                                                (注)2
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)3
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                (注)2
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)2
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)3
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)3
                                                
                                             
                                        
                                     | 
                                
                            
| Number of shares held (Ordinary shares) | 
                                        
                                             
                                                771,407
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                26,440
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                4,550,467
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                2,756,533
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                902,607
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                59,840
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                33,640
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     |