Statement Of Cash Flows [Abstract]
| Concept |
As at 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 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||
| Income taxes paid (refund), classified as operating activities | — |
848,000
EUR
|
0
EUR
|
— | — |
56,000
EUR
|
— |
0
EUR
|
— | — |
| Cash flows from (used in) operating activities | — |
220,750
EUR
|
202,093
EUR
|
— | — |
215,441
EUR
|
— |
147,456
EUR
|
— | — |
| Cash flows from (used in) investing activities [abstract] | ||||||||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities | — |
5,000
EUR
|
5,000
EUR
|
— | — |
37,593
EUR
|
— |
37,593
EUR
|
— | — |
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — |
0
EUR
|
0
EUR
|
— | — |
0
EUR
|
— |
18,060
EUR
|
— | — |
| Proceeds from sales of property, plant and equipment, classified as investing activities | — |
322,000
EUR
|
322,000
EUR
|
— | — |
1,721
EUR
|
— |
1,659
EUR
|
— | — |
| Purchase of property, plant and equipment, classified as investing activities | — |
97,475
EUR
|
89,013
EUR
|
— | — |
92,887
EUR
|
— |
84,549
EUR
|
— | — |
| Purchase of intangible assets, classified as investing activities | — |
62,798
EUR
|
63,464
EUR
|
— | — |
77,110
EUR
|
— |
33,756
EUR
|
— | — |
| Dividends received, classified as investing activities | — |
6,000
EUR
|
840,000
EUR
|
— | — |
159,000
EUR
|
— |
159,000
EUR
|
— | — |
| Interest received, classified as investing activities | — |
1,000
EUR
|
2,420
EUR
|
— | — |
8,000
EUR
|
— |
2,989
EUR
|
— | — |
| Cash flows from (used in) investing activities | — |
154,710
EUR
|
136,803
EUR
|
— | — |
130,536
EUR
|
— |
91,326
EUR
|
— | — |
| Cash flows from (used in) financing activities [abstract] | ||||||||||
| Payments from changes in ownership interests in subsidiaries that do not result in loss of control | — |
0
EUR
|
0
EUR
|
— | — |
17,607
EUR
|
— |
0
EUR
|
— | — |
| Payments of lease liabilities, classified as financing activities | — |
9,819
EUR
|
9,113
EUR
|
— | — |
10,896
EUR
|
— |
9,829
EUR
|
— | — |
| Dividends paid, classified as financing activities | — |
22,769
EUR
|
22,769
EUR
|
— | — |
29,275
EUR
|
— |
29,275
EUR
|
— | — |
| Interest paid, classified as financing activities | — |
8,747
EUR
|
8,750
EUR
|
— | — |
9,012
EUR
|
— |
8,866
EUR
|
— | — |
| Cash flows from (used in) financing activities | — |
71,136
EUR
|
64,401
EUR
|
— | — |
82,429
EUR
|
— |
57,047
EUR
|
— | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — |
44,000
EUR
|
44,000
EUR
|
— | — |
59,000
EUR
|
— |
59,000
EUR
|
— | — |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — |
5,096
EUR
|
889,000
EUR
|
— | — |
2,476
EUR
|
— |
917,000
EUR
|
— | — |
| Cash and cash equivalents |
8,167
EUR
|
— | — |
2,086
EUR
|
1,153
EUR
|
— |
13,219
EUR
|
— |
10,684
EUR
|
2,011
EUR
|