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Cash (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Cash        
Current accounts $ 86,759 $ 142,787    
Bank deposits 15 15    
Total $ 86,774 $ 142,802 $ 84,557 $ 17,565