Statement Of Cash Flows [Abstract]
| Concept | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | As at 2021-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||||||||||||||
| Profit (loss) | 
                                                86 445
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                86 277
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                86 277
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                168,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                38 523
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                39,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                38 484
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                38 484
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | 
| Adjustments to reconcile profit (loss) [abstract] | |||||||||||||||||||||
| Adjustments for fair value losses (gains) | 
                                                1 528
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                25 991
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Adjustments for losses (gains) on disposal of non-current assets | 
                                                761,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                418,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Other adjustments to reconcile profit (loss) | 
                                                18 888
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                19 365
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Income taxes paid (refund), classified as operating activities | 
                                                9 525
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                2 124
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Cash flows from (used in) operating activities | 
                                                332 003
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                600 961
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Cash flows from (used in) investing activities [abstract] | |||||||||||||||||||||
| Other cash payments to acquire equity or debt instruments of other entities, classified as investing activities | 
                                                207 417
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                654 515
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Proceeds from sales of property, plant and equipment, classified as investing activities | 
                                                591,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                405,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Purchase of property, plant and equipment, classified as investing activities | 
                                                7 442
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                4 228
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Cash flows from (used in) investing activities | 
                                                214 268
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                658 338
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Cash flows from (used in) financing activities [abstract] | |||||||||||||||||||||
| Payments of lease liabilities, classified as financing activities | 
                                                13 710
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                13 269
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Interest paid, classified as financing activities | 
                                                914,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                914,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Cash flows from (used in) financing activities | 
                                                14 624
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                14 183
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | 
                                                103 111
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                71 560
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Cash and cash equivalents | — | — | 
                                                2 174 269
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                2 071 158
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                2 142 718
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             |