Major Shareholders
| Concept | 
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                        
|---|---|---|---|---|---|---|---|---|---|---|---|
| Major shareholders | |||||||||||
| Major shareholders | |||||||||||
| Name | 
                                        
                                             
                                                福井珠樹
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                クリエイト従業員持株会
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                坂口明
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                新東鋳造株式会社
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                福井道夫
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                髙木敏幸
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                水間久雄
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                吉成隆則
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                クリエイト取引先持株会
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                岡部バルブ工業株式会社
                                                
                                             
                                        
                                     | 
                                
                            
| Address | 
                                        
                                             
                                                兵庫県芦屋市
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                大阪市西区阿波座1丁目13-15
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                札幌市北区
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                愛知県西尾市楠村町清水37
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                横浜市西区
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                川崎市宮前区
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                埼玉県久喜市
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                北海道雨竜郡雨竜町
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                大阪市西区阿波座1丁目13-15
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                東京都墨田区緑4丁目5-12
                                                
                                             
                                        
                                     | 
                                
                            
| Number of shares held | 
                                        
                                             
                                                276,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                370,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                57,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                2,311,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                62,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                451,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                66,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                48,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                71,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                831,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                75,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                            
| Shareholding ratio (excluding treasury shares) | 
                                        
                                             
                                                0.0709
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0950
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0146
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.5924
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0159
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.1156
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0169
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0123
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0182
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.2132
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0194
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     |