Key Financial Data Of Reporting Company
| Concept | 2023-10-21 to 2024-01-20 | As at 2024-01-20 | As at 2023-10-20 | 2022-10-21 to 2023-10-20 | 2022-10-21 to 2023-01-20 | As at 2023-01-20 | 
|---|---|---|---|---|---|---|
| Key financial data of reporting company | ||||||
| Business results of reporting company | ||||||
| Net sales | 
                                                786,771,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,881,579,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                753,847,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Ordinary profit (loss) | 
                                                124,192,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                185,484,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,237,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net assets | — | 
                                                3,084,792,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,026,892,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,859,655,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Total assets | — | 
                                                6,329,800,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,982,973,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                6,031,880,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Basic earnings (loss) per share | 
                                                15.20
                                                
                                             | — | — | 
                                                30.95
                                                
                                             | 
                                                4.84
                                                
                                             | — | 
| Diluted earnings per share |  | — | — |  |  | — | 
| Equity-to-asset ratio | — | 
                                                0.487
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.506
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | 
                                                0.474
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             |