Statement Of Cash Flows [Abstract]
| Concept | 2023-01-01 to 2023-12-31 | 2022-01-01 to 2022-12-31 | 
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) investing activities [abstract] | ||
| Purchase of interests in investments accounted for using equity method | 
                                                1,383,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                45,236,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
| Proceeds from sales of investments accounted for using equity method | 
                                                466,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                15 913
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             |