Notes - Significant Accounting Policies For Preparation Of Consolidated Financial Statements
| Concept | 
                                    
                                        As at 2025-03-31  | 
                            
                                
                                    
                                        2024-04-01 to 2025-03-31  | 
                            
                        
|---|---|---|
| Notes - Significant accounting policies for preparation of consolidated financial statements | ||
| Notes - Significant accounting policies for preparation of consolidated financial statements | ||
| Disclosure of scope of consolidation | ||
| Number of consolidated subsidiaries and names of major consolidated subsidiaries | — | 
                                        
                                             (1) 連結子会社の数 4社 連結子会社の名称 ㈱スリード ㈱三和 A-Drive㈱ ㈲秋測  | 
                                
                            
| Number of consolidated subsidiaries | 
                                        
                                             
                                                4
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
| Names of major unconsolidated subsidiaries and reasons for exclusion from scope of consolidation | — | 
                                        
                                             (2) 主要な非連結子会社の名称等 該当事項はありません。  | 
                                
                            
| Disclosure about application of equity method | ||
| Number of unconsolidated subsidiaries and associates accounted for using equity method and names of major entities accounted for using equity method | — | 
                                        
                                             2.持分法の適用に関する事項 該当事項はありません。  | 
                                
                            
| Disclosure about fiscal years, etc. of consolidated subsidiaries | — | 
                                        
                                             3.連結子会社の事業年度等に関する事項 すべての連結子会社の事業年度の末日は、連結決算日と一致しております。  | 
                                
                            
| Disclosure of accounting policies | ||
| Disclosure of accounting policies | — |