Profit Or Loss [Abstract]
| Concept | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2020-01-01 to 2020-12-31 | 2020-01-01 to 2020-12-31 | 
|---|---|---|---|---|
| Profit or loss [abstract] | ||||
| Profit (loss) [abstract] | ||||
| Revenue | 
                                                376,232
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | 
                                                357,788
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
| Cost of sales | 
                                                332,890
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | 
                                                322,931
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
| Other income | 
                                                8,574
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | 
                                                18,855
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
| Profit (loss) from operating activities | 
                                                2,894
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | 
                                                1,319
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
| Finance income | 
                                                967,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | 
                                                745,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
| Finance costs | 
                                                4,019
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | 
                                                4,911
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
| Other income (expense) from subsidiaries, jointly controlled entities and associates | 
                                                72,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | 
                                                282,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
| Profit (loss) before tax | 
                                                86,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | 
                                                5,767
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
| Tax expense (income) | 
                                                487,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | 
                                                346,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
| Profit (loss) | 
                                                401,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                401,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                6,113
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                6,113
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             |