Profit Or Loss [Abstract]
| Concept | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 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 | 2020-01-01 to 2020-12-31 | 2020-01-01 to 2020-12-31 | 2020-01-01 to 2020-12-31 | 2020-01-01 to 2020-12-31 | 2020-01-01 to 2020-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Profit or loss [abstract] | ||||||||||||||
| Profit (loss) [abstract] | ||||||||||||||
| Revenue | 
                                                193,067
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                143,136
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
| Other income | 
                                                11,882
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                18,755
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
| Employee benefits expense | 
                                                22,773
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                23,127
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
| Depreciation and amortisation expense | 
                                                4,712
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                4,199
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
| Other expenses, by nature | 
                                                1,132
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                5,478
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
| Profit (loss) from operating activities | 
                                                1,500
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                3,666
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
| Finance income | 
                                                1,969
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                745,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
| Finance costs | 
                                                4,007
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                4,874
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
| Profit (loss) before tax | 
                                                538,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                7,795
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
| Tax expense (income) | 
                                                760,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                37,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
| Profit (loss) | 
                                                222,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                222,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                7,758
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                7,758
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             |