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Trade and other receivables - Trade and Other Receivables (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Subclassifications of assets, liabilities and equities [abstract]    
Trade accounts receivable $ 37,490 $ 25,812
Other receivables 7,806 10,103
Contract assets 13,269 12,781
Trade and other receivables $ 58,565 $ 48,696