Statement Of Cash Flows [Abstract]
| Concept |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
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 |
As at 2020-01-01 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-01-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||||||
| Profit (loss) |
2,600,000
EUR
|
-
EUR
|
— |
2,600,000
EUR
|
-
EUR
|
-
EUR
|
— |
-
EUR
|
-
EUR
|
8,700,000
EUR
|
8,700,000
EUR
|
— |
-
EUR
|
— |
| Adjustments to reconcile profit (loss) [abstract] | ||||||||||||||
| Adjustments for share-based payments | — | — | — |
-
EUR
|
— | — | — | — | — | — |
1,900,000
EUR
|
— | — | — |
| Other adjustments for non-cash items | — | — | — |
7,500,000
EUR
|
— | — | — | — | — | — |
5,200,000
EUR
|
— | — | — |
| Cash flows from (used in) operations | — | — | — |
113,500,000
EUR
|
— | — | — | — | — | — |
104,000,000
EUR
|
— | — | — |
| Cash flows from (used in) operating activities | — | — | — |
89,500,000
EUR
|
— | — | — | — | — | — |
76,100,000
EUR
|
— | — | — |
| Cash flows from (used in) investing activities [abstract] | ||||||||||||||
| Proceeds from sales of property, plant and equipment, classified as investing activities | — | — | — |
800,000
EUR
|
— | — | — | — | — | — |
1,200,000
EUR
|
— | — | — |
| Purchase of property, plant and equipment, classified as investing activities | — | — | — |
5,400,000
EUR
|
— | — | — | — | — | — |
10,400,000
EUR
|
— | — | — |
| Purchase of intangible assets, classified as investing activities | — | — | — |
11,600,000
EUR
|
— | — | — | — | — | — |
33,000,000
EUR
|
— | — | — |
| Cash flows from (used in) investing activities | — | — | — |
16,000,000
EUR
|
— | — | — | — | — | — |
40,800,000
EUR
|
— | — | — |
| Cash flows from (used in) financing activities [abstract] | ||||||||||||||
| Payments of lease liabilities, classified as financing activities | — | — | — |
26,400,000
EUR
|
— | — | — | — | — | — |
24,500,000
EUR
|
— | — | — |
| Cash flows from (used in) financing activities | — | — | — |
78,100,000
EUR
|
— | — | — | — | — | — |
33,000,000
EUR
|
— | — | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — | — | — |
4,600,000
EUR
|
— | — | — | — | — | — |
2,300,000
EUR
|
— | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — | — |
1,600,000
EUR
|
— | — | — | — | — | — |
600,000
EUR
|
— | — | — |
| Cash and cash equivalents | — | — |
13,100,000
EUR
|
— | — | — |
19,300,000
EUR
|
— | — | — | — |
19,300,000
EUR
|
— |
16,400,000
EUR
|