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The Nature of Expenses - Employee benefits expense summarized by function (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
IFRS Statement [Line Items]      
Employee benefits expense $ 146,809 $ 103,357 $ 95,117
Cost of Revenues [Member]      
IFRS Statement [Line Items]      
Employee benefits expense 7,856 5,579 5,597
Operating Expenses [Member]      
IFRS Statement [Line Items]      
Employee benefits expense $ 138,953 $ 97,778 $ 89,520