Statement Of Cash Flows [Abstract]
| Concept |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
As at 2018-12-31 |
|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||
| Cash flows from (used in) operating activities [abstract] | ||||||
| Dividends received, classified as operating activities | — |
606,000
EUR
|
— |
997,000
EUR
|
— | — |
| Interest paid, classified as operating activities | — |
14,807,000
EUR
|
— |
16,368,000
EUR
|
— | — |
| Interest received, classified as operating activities | — |
1,621,000
EUR
|
— |
2,958,000
EUR
|
— | — |
| Cash flows from (used in) operating activities | — |
312,819,000
EUR
|
— |
257,380,000
EUR
|
— | — |
| Cash flows from (used in) investing activities [abstract] | ||||||
| Other inflows (outflows) of cash, classified as investing activities | — |
76,000
EUR
|
— |
4,433,000
EUR
|
— | — |
| Cash flows from (used in) investing activities | — |
147,009,000
EUR
|
— |
165,735,000
EUR
|
— | — |
| Cash flows from (used in) financing activities [abstract] | ||||||
| Payments to acquire or redeem entity's shares | — |
4,569,000
EUR
|
— |
5,220,000
EUR
|
— | — |
| Payments of lease liabilities, classified as financing activities | — |
18,821,000
EUR
|
— |
15,021,000
EUR
|
— | — |
| Dividends paid, classified as financing activities | — |
26,744,000
EUR
|
— |
20,151,000
EUR
|
— | — |
| Cash flows from (used in) financing activities | — |
104,689,000
EUR
|
— |
20,623,000
EUR
|
— | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
61,121,000
EUR
|
— |
71,022,000
EUR
|
— | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||
| Effect of exchange rate changes on cash and cash equivalents | — |
3,715,000
EUR
|
— |
495,000
EUR
|
— | — |
| Cash and cash equivalents |
218,270,000
EUR
|
— |
160,864,000
EUR
|
— |
160,864,000
EUR
|
89,347,000
EUR
|