Financial instruments - fair values and risk management - Liquidity risk (Details) $ in Thousands	12 Months Ended
Dec. 31, 2020 USD ($)
Liquidity risk
Disclosure of risk management strategy related to hedge accounting [line items]
Repayments of related party debt	$ 6,392

The cash outflow for repayments of advances and loans from related parties. [Refer: Related parties [member]; Advances received]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2020-01-01
-Paragraph 17
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_17&doctype=Standard
-URIDate 2020-01-01

Name:	ifrs-full_CashRepaymentsOfAdvancesAndLoansFromRelatedParties
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration