Cash and short-term deposits (Details) - EUR (€) € in Thousands	Jun. 30, 2021	Dec. 31, 2020
Secured bank loan
Borrowings
Short term deposits pledged as security	€ 1,500	€ 1,500
Overdraft facility
Borrowings
Short term deposits pledged as security	1,000	1,000
Existing Overdraft facility
Borrowings
Short term deposits pledged as security	2,500	€ 2,500
Maximum borrowing capacity	2,500
Second Overdraft facility
Borrowings
Maximum borrowing capacity	€ 500

The amount of financial assets that the entity has pledged as collateral for liabilities or contingent liabilities, including amounts that have been reclassified in accordance with paragraph 3.2.23(a) of IFRS 9. [Refer: Contingent liabilities [member]; Financial assets]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 14
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_14_a&doctype=Standard
-URIDate 2020-01-01

Name:	ifrs-full_FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant