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Cash and cash equivalents (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Cash and cash equivalents [abstract]      
Cash $ 276,734 $ 401,327  
Short-term bank deposits 3,001 80,000  
Cash and cash equivalents $ 279,735 $ 481,327 $ 451,962