Statement Of Financial Position [Abstract]
| Concept |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Non-current assets [abstract] | |||||||||||||||
| Property, plant and equipment | — | — |
193,907,000
EUR
|
— | — | — |
185,116,000
EUR
|
— | — | — | — | — | — | — | — |
| Intangible assets other than goodwill | — | — |
2,837,000
EUR
|
— | — | — |
2,429,000
EUR
|
— | — | — | — | — | — | — | — |
| Deferred tax assets | — | — |
10,587,000
EUR
|
— | — | — |
8,332,000
EUR
|
— | — | — | — | — | — | — | — |
| Non-current assets | — | — |
270,230,000
EUR
|
— | — | — |
252,482,000
EUR
|
— | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||
| Current inventories | — | — |
99,436,000
EUR
|
— | — | — |
116,306,000
EUR
|
— | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — |
141,514,000
EUR
|
— | — | — |
165,474,000
EUR
|
— | — | — | — | — | — | — |
116,967,000
EUR
|
| Current assets | — | — |
331,886,000
EUR
|
— | — | — |
385,524,000
EUR
|
— | — | — | — | — | — | — | — |
| Assets | — | — |
602,116,000
EUR
|
— | — | — |
638,006,000
EUR
|
— | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital | — | — |
430,000
EUR
|
— | — | — |
430,000
EUR
|
— | — | — | — | — | — | — | — |
| Retained earnings | — | — |
459,222,000
EUR
|
— | — | — |
443,414,000
EUR
|
— | — | — | — | — | — | — | — |
| Equity |
459,222,000
EUR
|
430,000
EUR
|
89,887,000
EUR
|
9,085,000
EUR
|
539,594,000
EUR
|
539,594,000
EUR
|
107,256,000
EUR
|
10,646,000
EUR
|
430,000
EUR
|
443,414,000
EUR
|
430,000
EUR
|
482,826,000
EUR
|
539,630,000
EUR
|
10,422,000
EUR
|
67,656,000
EUR
|
| Liabilities [abstract] | |||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||
| Non-current provisions for employee benefits | — | — |
28,738,000
EUR
|
— | — | — |
27,044,000
EUR
|
— | — | — | — | — | — | — | — |
| Other non-current provisions | — | — |
2,284,000
EUR
|
— | — | — |
1,373,000
EUR
|
— | — | — | — | — | — | — | — |
| Deferred tax liabilities | — | — |
1,353,000
EUR
|
— | — | — |
648,000
EUR
|
— | — | — | — | — | — | — | — |
| Non-current liabilities | — | — |
336,768,000
EUR
|
— | — | — |
310,558,000
EUR
|
— | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||
| Current provisions [abstract] | |||||||||||||||
| Other current provisions | — | — |
38,867,000
EUR
|
— | — | — |
46,693,000
EUR
|
— | — | — | — | — | — | — | — |
| Current tax liabilities, current | — | — |
7,591,000
EUR
|
— | — | — |
19,056,000
EUR
|
— | — | — | — | — | — | — | — |
| Current liabilities | — | — |
175,461,000
EUR
|
— | — | — |
220,191,000
EUR
|
— | — | — | — | — | — | — | — |
| Equity and liabilities | — | — |
602,116,000
EUR
|
— | — | — |
638,006,000
EUR
|
— | — | — | — | — | — | — | — |