Statement Of Financial Position [Abstract]
| Concept | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | As at 2021-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Property, plant and equipment | — | — | — | 
                                                3 167
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                3 240
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Investment property | — | — | — | 
                                                94 865
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                72 536
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Cash and cash equivalents | — | — | — | 
                                                416,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                78,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | 
                                                397,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | 
| Assets | — | — | — | 
                                                126 457
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                107 692
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital | — | — | — | 
                                                6 925
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                6 925
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Retained earnings | — | — | — | 
                                                4 559
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                4 412
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Share premium | — | — | — | 
                                                40 147
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                40 147
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Other reserves | — | — | — | 
                                                4 793
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                4 709
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Equity | 
                                                40 147
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                6 925
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                4 559
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                56 424
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                4 793
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                56 193
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                40 147
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                4 412
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                6 925
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                4 709
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                53 394
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                1 695
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                4 627
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                40 147
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                6 925
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
| Liabilities [abstract] | |||||||||||||||
| Deferred tax liabilities | — | — | — | 
                                                6,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Liabilities | — | — | — | 
                                                70 033
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                51 499
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Equity and liabilities | — | — | — | 
                                                126 457
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                107 692
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — |