Statement Of Financial Position [Abstract]
| Concept |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||
| Property, plant and equipment | — | — | — |
47,650,000
EUR
|
— | — | — | — | — | — | — |
55,650,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Goodwill | — | — | — |
61,367,000
EUR
|
— | — | — | — | — | — | — |
61,178,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Trade and other non-current receivables | — | — | — |
82,513,000
EUR
|
— | — | — | — | — | — | — |
81,804,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — |
4,173,000
EUR
|
— | — | — | — | — | — | — |
5,357,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Other non-current financial assets | — | — | — |
404,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — | — | — |
150,864,000
EUR
|
— | — | — | — | — | — | — |
163,467,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||
| Current tax assets, current | — | — | — |
1,194,000
EUR
|
— | — | — | — | — | — | — |
2,341,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — |
53,051,000
EUR
|
— | — | — |
31,851,000
EUR
|
— | — | — |
31,851,000
EUR
|
— | — | — | — | — | — |
47,500,000
EUR
|
— | — |
| Current assets | — | — | — |
319,978,000
EUR
|
— | — | — | — | — | — | — |
274,445,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Assets | — | — | — |
470,842,000
EUR
|
— | — | — | — | — | — | — |
437,912,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — | — | — |
5,441,000
EUR
|
— | — | — | — | — | — | — |
5,441,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — |
237,409,000
EUR
|
— | — | — | — | — | — | — |
186,643,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Equity |
237,409,000
EUR
|
5,441,000
EUR
|
4,725,000
EUR
|
278,250,000
EUR
|
40,125,000
EUR
|
5,441,000
EUR
|
186,643,000
EUR
|
230,020,000
EUR
|
1,983,000
EUR
|
39,919,000
EUR
|
1,983,000
EUR
|
230,020,000
EUR
|
186,643,000
EUR
|
5,441,000
EUR
|
39,919,000
EUR
|
5,441,000
EUR
|
9,963,000
EUR
|
121,130,000
EUR
|
169,059,000
EUR
|
35,934,000
EUR
|
3,409,000
EUR
|
| Liabilities [abstract] | |||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||||||||
| Non-current provisions | — | — | — |
11,119,000
EUR
|
— | — | — | — | — | — | — |
12,796,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — | — | — |
28,323,000
EUR
|
— | — | — | — | — | — | — |
25,931,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Non-current liabilities | — | — | — |
73,989,000
EUR
|
— | — | — | — | — | — | — |
80,312,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||
| Current provisions [abstract] | |||||||||||||||||||||
| Current provisions | — | — | — |
719,000
EUR
|
— | — | — | — | — | — | — |
1,025,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Current tax liabilities, current | — | — | — |
5,118,000
EUR
|
— | — | — | — | — | — | — |
4,389,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Current liabilities | — | — | — |
118,603,000
EUR
|
— | — | — | — | — | — | — |
127,580,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Liabilities | — | — | — |
192,592,000
EUR
|
— | — | — | — | — | — | — |
207,892,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — |
470,842,000
EUR
|
— | — | — | — | — | — | — |
437,912,000
EUR
|
— | — | — | — | — | — | — | — | — |