Notes - Other Income And Other Expenses
| Concept | 2023-01-01 to 2023-12-31 | 2022-01-01 to 2022-12-31 | 
|---|---|---|
| Notes - Other income and other expenses | ||
| Components of other income and other expenses | ||
| Other income | ||
| Gain on sale of fixed assets | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,772,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other income | 
                                                1,772,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,918,219,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other expenses | ||
| Loss on retirement of fixed assets | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                -1,989,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -369,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other expenses | 
                                                24,156,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                369,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |