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Capital and Financial Risk Management - Credit risk (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Capital And Financial Risk Management Credit Risk [Abstract]        
Cash and cash equivalents $ 149,866 $ 465,708 $ 403,881 $ 132,360
Short-term investments 200,229 0    
Trade and other receivables 11,867 3,174    
Total $ 361,961 $ 468,882