Disclosure Of Interests In Other Entities [Text Block]
| Concept | As at 2021-12-31 | 2021-01-01 to 2021-12-31 | 2021-01-01 to 2021-12-31 | 2020-01-01 to 2020-12-31 | As at 2020-12-31 | 2020-01-01 to 2020-12-31 | As at 2019-12-31 | 
|---|---|---|---|---|---|---|---|
| Disclosure of interests in other entities [text block] | — | — | — | — | — | — | — | 
| Disclosure of interests in subsidiaries [text block] | — | — | — | — | — | — | — | 
| Disclosure of subsidiaries [text block] | — | — | — | — | — | — | — | 
| Disclosure of subsidiaries [abstract] | |||||||
| Disclosure of subsidiaries [line items] | |||||||
| Current assets | 
                                                114,987
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
                                                128,714
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | 
| Non-current assets | 
                                                265,306
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
                                                267,447
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | 
| Current liabilities | 
                                                172,484
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
                                                141,074
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | 
| Non-current liabilities | 
                                                75,731
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
                                                123,524
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | 
| Revenue | — | 
                                                376,232
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
                                                357,788
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | 
| Profit (loss) | — | 
                                                401,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                401,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
                                                6,113
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | 
                                                6,113
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | 
| Comprehensive income | — | 
                                                515,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
                                                6,338
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | 
| Disclosure of interests in associates [text block] | — | — | — | — | — | — | — | 
| Disclosure of associates [text block] | — | — | — | — | — | — | — | 
| Disclosure of associates [abstract] | |||||||
| Disclosure of associates [line items] | |||||||
| Other comprehensive income | — | 
                                                114,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
                                                225,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | 
| Disclosure of interests in joint arrangements [text block] | — | — | — | — | — | — | — | 
| Disclosure of joint ventures [text block] | — | — | — | — | — | — | — | 
| Disclosure of joint ventures [abstract] | |||||||
| Disclosure of joint ventures [line items] | |||||||
| Cash and cash equivalents | 
                                                1,708
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
                                                1,707
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | 
                                                1,612
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | 
| Depreciation and amortisation expense | — | 
                                                4,756
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
                                                4,199
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | 
| Tax expense (income) | — | 
                                                487,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | 
                                                346,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — |