Equity - Capital Reserves (Details) - EUR (€) € in Thousands	Sep. 30, 2021	Dec. 31, 2020
Capital reserve
Share premium included in capital reserve	€ 107,451	€ 107,498

The amount received or receivable from the issuance of the entity's shares in excess of nominal value.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 78
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_e&doctype=Standard
-URIDate 2020-01-01

Name:	ifrs-full_SharePremium
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant