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Provisions for other liabilities - Total Provisions (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of other provisions [abstract]      
Non current $ 2,565 $ 2,705  
Current 3,421 1,654  
Total provisions $ 5,986 $ 4,359 $ 3,172