Statement Of Cash Flows [Abstract]
| Concept | As at 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 | 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 | 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 | As at 2019-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||||||||||
| 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
                                                    
                                                
                                             | — | 
| Adjustments to reconcile profit (loss) [abstract] | |||||||||||||||||
| Adjustments for decrease (increase) in inventories | — | 
                                                4,626
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                5,794
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Adjustments for depreciation and amortisation expense | — | 
                                                4,712
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                4,199
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss | — | 
                                                -
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                1,404
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Adjustments for provisions | — | 
                                                27,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                1,103
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Adjustments for unrealised foreign exchange losses (gains) | — | 
                                                150,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                383,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Adjustments for losses (gains) on disposal of non-current assets | — | 
                                                405,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                3,111
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Interest paid, classified as operating activities | — | 
                                                905,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                1,412
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Income taxes paid (refund), classified as operating activities | — | 
                                                -
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                -
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Cash flows from (used in) operating activities | — | 
                                                4,243
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                10,031
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Cash flows from (used in) investing activities [abstract] | |||||||||||||||||
| Proceeds from sales of intangible assets, classified as investing activities | — | 
                                                676,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                12,205
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Cash advances and loans made to other parties, classified as investing activities | — | 
                                                -
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                -
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Cash receipts from repayment of advances and loans made to other parties, classified as investing activities | — | 
                                                91,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                72,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Cash flows from (used in) investing activities | — | 
                                                922,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                11,765
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Cash flows from (used in) financing activities [abstract] | |||||||||||||||||
| Proceeds from borrowings, classified as financing activities | — | 
                                                8,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                28,499
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Repayments of borrowings, classified as financing activities | — | 
                                                9,086
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                27,305
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Payments of lease liabilities, classified as financing activities | — | 
                                                2,526
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                3,037
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Cash flows from (used in) financing activities | — | 
                                                3,191
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                1,843
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — | 
                                                130,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                109,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | 
| Cash and cash equivalents | 
                                                715,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                585,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                694,000
                                                
                                                    
                                                        iso4217:HRK
                                                    
                                                
                                             |