Deferred income (Details) - EUR (€) € in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Deferred income
Deferred income.	€ 1,201	€ 1,571
Deferred income period	5 years
Deferred income classified as non-current	€ 831	€ 1,201

The amount of liability representing income that has been received but is not yet earned. [Refer: Revenue]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 78
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78&doctype=Standard
-URIDate 2020-01-01

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