Statement Of Cash Flows [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||
| Income taxes paid (refund), classified as operating activities |
2,300,000
EUR
|
— |
1,245,000
EUR
|
— | — |
7,743,000
EUR
|
— |
6,694,000
EUR
|
— | — |
| Cash flows from (used in) operating activities |
245,705,000
EUR
|
— |
194,954,000
EUR
|
— | — |
198,423,000
EUR
|
— |
134,371,000
EUR
|
— | — |
| Cash flows from (used in) investing activities [abstract] | ||||||||||
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities |
0
EUR
|
— |
0
EUR
|
— | — |
0
EUR
|
— |
1,000,000
EUR
|
— | — |
| Proceeds from sales of property, plant and equipment, classified as investing activities |
3,171,000
EUR
|
— |
4,662,000
EUR
|
— | — |
1,704,000
EUR
|
— |
2,200,000
EUR
|
— | — |
| Purchase of property, plant and equipment, classified as investing activities |
95,588,000
EUR
|
— |
70,157,000
EUR
|
— | — |
96,548,000
EUR
|
— |
69,923,000
EUR
|
— | — |
| Purchase of intangible assets, classified as investing activities |
75,352,000
EUR
|
— |
69,131,000
EUR
|
— | — |
56,550,000
EUR
|
— |
34,441,000
EUR
|
— | — |
| Cash advances and loans made to other parties, classified as investing activities |
200,000
EUR
|
— |
4,230,000
EUR
|
— | — |
100,000
EUR
|
— |
5,790,000
EUR
|
— | — |
| Cash receipts from repayment of advances and loans made to other parties, classified as investing activities |
45,000
EUR
|
— |
24,331,000
EUR
|
— | — |
55,000
EUR
|
— |
14,380,000
EUR
|
— | — |
| Dividends received, classified as investing activities |
166,000
EUR
|
— |
271,000
EUR
|
— | — |
240,000
EUR
|
— |
1,185,000
EUR
|
— | — |
| Interest received, classified as investing activities |
255,000
EUR
|
— |
3,452,000
EUR
|
— | — |
4,000
EUR
|
— |
1,540,000
EUR
|
— | — |
| Cash flows from (used in) investing activities |
167,466,000
EUR
|
— |
110,765,000
EUR
|
— | — |
150,795,000
EUR
|
— |
91,449,000
EUR
|
— | — |
| Cash flows from (used in) financing activities [abstract] | ||||||||||
| Payments to acquire or redeem entity's shares |
0
EUR
|
— |
0
EUR
|
— | — |
394,000
EUR
|
— |
394,000
EUR
|
— | — |
| Payments of lease liabilities, classified as financing activities |
10,243,000
EUR
|
— |
10,002,000
EUR
|
— | — |
9,158,000
EUR
|
— |
8,723,000
EUR
|
— | — |
| Dividends paid, classified as financing activities |
0
EUR
|
— |
0
EUR
|
— | — |
29,244,000
EUR
|
— |
29,244,000
EUR
|
— | — |
| Interest paid, classified as financing activities |
17,365,000
EUR
|
— |
16,850,000
EUR
|
— | — |
7,215,000
EUR
|
— |
7,172,000
EUR
|
— | — |
| Other inflows (outflows) of cash, classified as financing activities |
0
EUR
|
— |
0
EUR
|
— | — |
0
EUR
|
— |
0
EUR
|
— | — |
| Cash flows from (used in) financing activities |
60,195,000
EUR
|
— |
59,439,000
EUR
|
— | — |
26,231,000
EUR
|
— |
27,153,000
EUR
|
— | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes |
18,044,000
EUR
|
— |
24,750,000
EUR
|
— | — |
21,397,000
EUR
|
— |
15,769,000
EUR
|
— | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||||||
| Effect of exchange rate changes on cash and cash equivalents |
53,000
EUR
|
— |
53,000
EUR
|
— | — |
50,000
EUR
|
— |
50,000
EUR
|
— | — |
| Cash and cash equivalents | — |
55,479,000
EUR
|
— |
44,376,000
EUR
|
37,382,000
EUR
|
— |
19,573,000
EUR
|
— |
15,935,000
EUR
|
3,754,000
EUR
|