Shareholdings
| Concept | As at 2024-03-31 | As at 2023-03-31 | 
|---|---|---|
| Shareholdings | ||
| Reporting company | ||
| Details of specified investment shares held for purposes other than pure investment | ||
| Issue | 
                                                ㈱オーハシテクニカ
                                                
                                             | — | 
| Number of shares | 
                                                7,691
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                7,472
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Carrying amount | 
                                                12,645,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,739,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Purpose of shareholding, overview of business alliance, quantitative effects of shareholding and reason for increase in number of shares | 
                                                (保有目的)当社金属製品事業における関係維持・強化(業務提携)該当事項はありません(株式が増加した理由)持株会による株式の取得
                                                
                                             | — | 
| Whether issuer of aforementioned shares holds reporting company's shares | 
                                                無
                                                
                                             | — |