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 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
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 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||||||
| Profit (loss) | — |
37,888,000
EUR
|
34,371,000
EUR
|
34,371,000
EUR
|
— |
37,888,000
EUR
|
— |
24,865,000
EUR
|
24,865,000
EUR
|
24,174,000
EUR
|
24,174,000
EUR
|
— | — | — |
| Adjustments to reconcile profit (loss) [abstract] | ||||||||||||||
| Adjustments for income tax expense | — | — | — |
5,706,000
EUR
|
— |
7,187,000
EUR
|
— |
523,000
EUR
|
— |
21,000
EUR
|
— | — | — | — |
| Adjustments for finance costs | — | — | — |
8,746,000
EUR
|
— |
8,617,000
EUR
|
— |
10,173,000
EUR
|
— |
18,501,000
EUR
|
— | — | — | — |
| Adjustments for decrease (increase) in inventories | — | — | — |
2,099,000
EUR
|
— |
3,556,000
EUR
|
— |
5,421,000
EUR
|
— |
4,867,000
EUR
|
— | — | — | — |
| Adjustments for depreciation and amortisation expense | — | — | — |
142,175,000
EUR
|
— |
169,056,000
EUR
|
— |
167,279,000
EUR
|
— |
137,351,000
EUR
|
— | — | — | — |
| Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss | — | — | — |
0
EUR
|
— |
686,000
EUR
|
— |
222,000
EUR
|
— |
59,000
EUR
|
— | — | — | — |
| Adjustments for provisions | — | — | — |
3,377,000
EUR
|
— |
3,661,000
EUR
|
— |
1,538,000
EUR
|
— |
1,546,000
EUR
|
— | — | — | — |
| Income taxes paid (refund), classified as operating activities | — | — | — |
0
EUR
|
— |
691,000
EUR
|
— |
848,000
EUR
|
— |
0
EUR
|
— | — | — | — |
| Cash flows from (used in) operating activities | — | — | — |
183,301,000
EUR
|
— |
218,869,000
EUR
|
— |
220,750,000
EUR
|
— |
202,093,000
EUR
|
— | — | — | — |
| Cash flows from (used in) investing activities [abstract] | ||||||||||||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities | — | — | — |
0
EUR
|
— |
0
EUR
|
— |
5,000,000
EUR
|
— |
5,000,000
EUR
|
— | — | — | — |
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — | — | — |
1,500,000
EUR
|
— |
0
EUR
|
— |
0
EUR
|
— |
0
EUR
|
— | — | — | — |
| Proceeds from sales of property, plant and equipment, classified as investing activities | — | — | — |
5,846,000
EUR
|
— |
5,846,000
EUR
|
— |
322,000
EUR
|
— |
322,000
EUR
|
— | — | — | — |
| Purchase of property, plant and equipment, classified as investing activities | — | — | — |
82,148,000
EUR
|
— |
94,693,000
EUR
|
— |
97,475,000
EUR
|
— |
89,013,000
EUR
|
— | — | — | — |
| Purchase of intangible assets, classified as investing activities | — | — | — |
100,673,000
EUR
|
— |
104,274,000
EUR
|
— |
62,798,000
EUR
|
— |
63,464,000
EUR
|
— | — | — | — |
| Cash receipts from repayment of advances and loans made to other parties, classified as investing activities | — | — | — |
13,426,000
EUR
|
— |
79,000
EUR
|
— |
240,000
EUR
|
— |
8,547,000
EUR
|
— | — | — | — |
| Dividends received, classified as investing activities | — | — | — |
11,128,000
EUR
|
— |
128,000
EUR
|
— |
6,000
EUR
|
— |
840,000
EUR
|
— | — | — | — |
| Interest received, classified as investing activities | — | — | — |
2,155,000
EUR
|
— |
7,000
EUR
|
— |
1,000
EUR
|
— |
2,420,000
EUR
|
— | — | — | — |
| Cash flows from (used in) investing activities | — | — | — |
152,966,000
EUR
|
— |
193,157,000
EUR
|
— |
154,710,000
EUR
|
— |
136,803,000
EUR
|
— | — | — | — |
| Cash flows from (used in) financing activities [abstract] | ||||||||||||||
| Payments of lease liabilities, classified as financing activities | — | — | — |
11,655,000
EUR
|
— |
12,593,000
EUR
|
— |
9,819,000
EUR
|
— |
9,113,000
EUR
|
— | — | — | — |
| Dividends paid, classified as financing activities | — | — | — |
29,275,000
EUR
|
— |
29,275,000
EUR
|
— |
22,769,000
EUR
|
— |
22,769,000
EUR
|
— | — | — | — |
| Interest paid, classified as financing activities | — | — | — |
8,537,000
EUR
|
— |
8,481,000
EUR
|
— |
8,747,000
EUR
|
— |
8,750,000
EUR
|
— | — | — | — |
| Other inflows (outflows) of cash, classified as financing activities | — | — | — |
0
EUR
|
— |
5,000
EUR
|
— |
0
EUR
|
— |
0
EUR
|
— | — | — | — |
| Cash flows from (used in) financing activities | — | — | — |
28,708,000
EUR
|
— |
17,985,000
EUR
|
— |
71,136,000
EUR
|
— |
64,401,000
EUR
|
— | — | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — | — |
41,000
EUR
|
— |
41,000
EUR
|
— |
44,000
EUR
|
— |
44,000
EUR
|
— | — | — | — |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — | — | — |
1,627,000
EUR
|
— |
7,727,000
EUR
|
— |
5,096,000
EUR
|
— |
889,000
EUR
|
— | — | — | — |
| Cash and cash equivalents |
15,935,000
EUR
|
— | — | — |
3,754,000
EUR
|
— |
8,167,000
EUR
|
— | — | — | — |
2,086,000
EUR
|
1,153,000
EUR
|
13,219,000
EUR
|