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Payroll and social securities payable - Summary (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Non-current    
Social security payable $ 1,075 $ 1,209
Non-current payroll and social security liabilities 1,075 1,209 [1]
Current    
Salaries payable 2,774 3,290
Social security payable 2,827 3,025
Provision for vacations 6,866 8,808
Provision for bonuses 10,866 10,085
Current payroll and social security liabilities 23,333 25,208
Total payroll and social security liabilities $ 24,408 $ 26,417
[1] Prior periods have been recast to reflect the Company's change in accounting policy for the reclassification within shareholders equity of the initial application of IAS 29 as explained in Note 34.1.