Statement Of Financial Position [Abstract]
| Concept |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Non-current assets [abstract] | |||||||||||||||
| Property, plant and equipment | — | — | — |
184,905,000
EUR
|
— | — | — | — |
186,787,000
EUR
|
— | — | — | — | — | — |
| Intangible assets other than goodwill | — | — | — |
3,100,000
EUR
|
— | — | — | — |
3,618,000
EUR
|
— | — | — | — | — | — |
| Deferred tax assets | — | — | — |
18,845,000
EUR
|
— | — | — | — |
8,974,000
EUR
|
— | — | — | — | — | — |
| Non-current assets | — | — | — |
267,009,000
EUR
|
— | — | — | — |
263,543,000
EUR
|
— | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||
| Current inventories | — | — | — |
129,388,000
EUR
|
— | — | — | — |
95,470,000
EUR
|
— | — | — | — | — | — |
| Cash and cash equivalents | — | — | — |
116,967,000
EUR
|
— | — | — | — |
175,299,000
EUR
|
— |
196,166,000
EUR
|
— | — | — | — |
| Current assets | — | — | — |
327,036,000
EUR
|
— | — | — | — |
366,404,000
EUR
|
— | — | — | — | — | — |
| Assets | — | — | — |
594,045,000
EUR
|
— | — | — | — |
629,947,000
EUR
|
— | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital | — | — | — |
430,000
EUR
|
— | — | — | — |
62,000
EUR
|
— | — | — | — | — | — |
| Equity |
430,000
EUR
|
10,422,000
EUR
|
539,630,000
EUR
|
67,656,000
EUR
|
482,826,000
EUR
|
1,245,000
EUR
|
21,891,000
EUR
|
62,000
EUR
|
505,091,000
EUR
|
528,289,000
EUR
|
511,166,000
EUR
|
3,368,000
EUR
|
62,000
EUR
|
536,487,000
EUR
|
21,891,000
EUR
|
| Liabilities [abstract] | |||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||
| Non-current provisions for employee benefits | — | — | — |
34,871,000
EUR
|
— | — | — | — |
34,644,000
EUR
|
— | — | — | — | — | — |
| Other non-current provisions | — | — | — |
3,172,000
EUR
|
— | — | — | — |
5,169,000
EUR
|
— | — | — | — | — | — |
| Deferred tax liabilities | — | — | — |
3,635,000
EUR
|
— | — | — | — |
3,651,000
EUR
|
— | — | — | — | — | — |
| Non-current liabilities | — | — | — |
319,113,000
EUR
|
— | — | — | — |
933,934,000
EUR
|
— | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||
| Current provisions [abstract] | |||||||||||||||
| Other current provisions | — | — | — |
47,974,000
EUR
|
— | — | — | — |
53,901,000
EUR
|
— | — | — | — | — | — |
| Current tax liabilities, current | — | — | — |
13,805,000
EUR
|
— | — | — | — |
14,887,000
EUR
|
— | — | — | — | — | — |
| Current liabilities | — | — | — |
207,275,000
EUR
|
— | — | — | — |
201,104,000
EUR
|
— | — | — | — | — | — |
| Equity and liabilities | — | — | — |
594,045,000
EUR
|
— | — | — | — |
629,947,000
EUR
|
— | — | — | — | — | — |