Consolidated Statement Of Comprehensive Income
| Concept | 2023-04-01 to 2023-12-31 | 2022-04-01 to 2022-12-31 | 
|---|---|---|
| Consolidated statement of comprehensive income | ||
| Statement of comprehensive income | ||
| Profit (loss) | 
                                                431,625,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                58,654,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other comprehensive income | ||
| Valuation difference on available-for-sale securities | 
                                                6,097,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                4,203,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,515,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Remeasurements of defined benefit plans, net of tax | 
                                                252,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,905,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other comprehensive income | 
                                                10,554,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,497,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income | 
                                                442,179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,151,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income attributable to | ||
| Comprehensive income attributable to owners of parent | 
                                                442,179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,151,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |