Income Taxes (Details) - EUR (€) € in Thousands	Mar. 31, 2020	Dec. 31, 2019
Income taxes
Current income tax liability	€ 65	€ 64

The current amount of current tax liabilities. [Refer: Current tax liabilities]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 54
-Subparagraph n
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_n&doctype=Standard
-URIDate 2018-03-16

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