Research and development costs (Details) - EUR (€) € in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Research and Development costs
Research and development costs	€ 6,060	€ 13,367
Decrease in research and development costs compared to same period in prior year	€ (7,307)

The amount of expenditure directly attributable to research or development activities, recognised in profit or loss.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
-IssueDate 2022-03-24
-Paragraph 126
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2022-en-r&anchor=para_126&doctype=Standard
-URIDate 2022-03-24

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration