Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||||||||||||||
| Property, plant and equipment [abstract] | |||||||||||||||
| Property, plant and equipment |
416 022
PLN
|
— | — | — | — | — |
432 086
PLN
|
— | — | — | — | — | — | — | — |
| Intangible assets and goodwill [abstract] | |||||||||||||||
| Intangible assets other than goodwill [abstract] | |||||||||||||||
| Intangible assets other than goodwill |
6 385
PLN
|
— | — | — | — | — |
6 805
PLN
|
— | — | — | — | — | — | — | — |
| Goodwill |
7 323
PLN
|
— | — | — | — | — |
6 969
PLN
|
— | — | — | — | — | — | — | — |
| Investment property [abstract] | |||||||||||||||
| Investment property |
4 615
PLN
|
— | — | — | — | — |
3 489
PLN
|
— | — | — | — | — | — | — | — |
| Trade and other non-current receivables [abstract] | |||||||||||||||
| Trade and other non-current receivables |
2 503
PLN
|
— | — | — | — | — |
1 437
PLN
|
— | — | — | — | — | — | — | — |
| Trade and other current receivables [abstract] | |||||||||||||||
| Current trade receivables |
150 338
PLN
|
— | — | — | — | — |
140 988
PLN
|
— | — | — | — | — | — | — | — |
| Other current receivables |
10 238
PLN
|
— | — | — | — | — |
29 011
PLN
|
— | — | — | — | — | — | — | — |
| Classes of current inventories [abstract] | |||||||||||||||
| Current inventories |
195 085
PLN
|
— | — | — | — | — |
207 126
PLN
|
— | — | — | — | — | — | — | — |
| Classes of current inventories, alternative [abstract] | |||||||||||||||
| Cash and cash equivalents [abstract] | |||||||||||||||
| Cash and cash equivalents |
110 007
PLN
|
— | — | — | — | — |
79 727
PLN
|
— | — | — |
86 525
PLN
|
— | — | — | — |
| Miscellaneous assets [abstract] | |||||||||||||||
| Restricted cash and cash equivalents |
870,000
PLN
|
— | — | — | — | — |
502,000
PLN
|
— | — | — | — | — | — | — | — |
| Classes of other provisions [abstract] | |||||||||||||||
| Other provisions [abstract] | |||||||||||||||
| Other current provisions |
9 052
PLN
|
— | — | — | — | — |
4 183
PLN
|
— | — | — | — | — | — | — | — |
| Borrowings [abstract] | |||||||||||||||
| Non-current portion of non-current borrowings |
89 833
PLN
|
— | — | — | — | — |
178 382
PLN
|
— | — | — | — | — | — | — | — |
| Current borrowings and current portion of non-current borrowings [abstract] | |||||||||||||||
| Current borrowings and current portion of non-current borrowings |
190 478
PLN
|
— | — | — | — | — |
89 937
PLN
|
— | — | — | — | — | — | — | — |
| Non-current portion of non-current borrowings, by type [abstract] | |||||||||||||||
| Current borrowings and current portion of non-current borrowings, by type [abstract] | |||||||||||||||
| Trade and other current payables [abstract] | |||||||||||||||
| Current trade payables |
96 595
PLN
|
— | — | — | — | — |
94 197
PLN
|
— | — | — | — | — | — | — | — |
| Current accruals and current deferred income including current contract liabilities [abstract] | |||||||||||||||
| Current deferred income including current contract liabilities [abstract] | |||||||||||||||
| Current contract liabilities [abstract] | |||||||||||||||
| Current contract liabilities |
19 241
PLN
|
— | — | — | — | — |
6 972
PLN
|
— | — | — | — | — | — | — | — |
| Categories of financial liabilities [abstract] | |||||||||||||||
| Financial liabilities at fair value through profit or loss [abstract] | |||||||||||||||
| Financial liabilities at fair value through profit or loss |
271,000
PLN
|
— | — | — | — | — |
182,000
PLN
|
— | — | — | — | — | — | — | — |
| Issued capital [abstract] | |||||||||||||||
| Issued capital |
5 376
PLN
|
— | — | — |
5 376
PLN
|
— |
5 376
PLN
|
— | — |
5 376
PLN
|
— | — | — | — |
5 376
PLN
|
| Retained earnings [abstract] | |||||||||||||||
| Retained earnings |
498 019
PLN
|
498 019
PLN
|
— | — | — |
462 844
PLN
|
462 844
PLN
|
— | — | — | — | — |
439 256
PLN
|
— | — |
| Accumulated other comprehensive income [abstract] | |||||||||||||||
| Reserve of exchange differences on translation |
13 855
PLN
|
— |
13 855
PLN
|
— | — | — |
6 110
PLN
|
6 110
PLN
|
— | — | — | — | — |
7 407
PLN
|
— |
| Miscellaneous equity [abstract] | |||||||||||||||
| Reserve of share-based payments |
6 291
PLN
|
— | — |
6 291
PLN
|
— | — |
6 291
PLN
|
— |
6 291
PLN
|
— | — |
6 291
PLN
|
— | — | — |
| Statutory reserve |
1 792
PLN
|
— | — | — | — | — |
1 792
PLN
|
— | — | — |
1 792
PLN
|
— | — | — | — |
| Net assets (liabilities) [abstract] | |||||||||||||||
| Assets |
1 004 181
PLN
|
— | — | — | — | — |
954 664
PLN
|
— | — | — | — | — | — | — | — |
| Net current assets (liabilities) [abstract] | |||||||||||||||
| Current assets |
526 029
PLN
|
— | — | — | — | — |
464 945
PLN
|
— | — | — | — | — | — | — | — |
| Current liabilities |
362 672
PLN
|
— | — | — | — | — |
248 728
PLN
|
— | — | — | — | — | — | — | — |
| Assets less current liabilities [abstract] |