Trade and other receivables - Contract Assets (Details) $ in Thousands	12 Months Ended
Dec. 31, 2022 USD ($)
Contract Assets [Roll Forward]
Beginning balance	$ 20,386
Additions to contract assets	13,306
Invoiced during the year	(20,911)
Ending balance	$ 12,781

The increase (decrease) in contract assets resulting from cumulative catch-up adjustments to revenue. [Refer: Contract assets; Revenue from contracts with customers]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 15
-IssueDate 2022-03-24
-Paragraph 118
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2022-en-r&anchor=para_118_b&doctype=Standard
-URIDate 2022-03-24

Name:	ifrs-full_IncreaseDecreaseThroughCumulativeCatchupAdjustmentsToRevenueContractAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration