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OTHER LIABILITIES - NON CURRENT AND CURRENT (Other liabilities - Current) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Disclosure of other liabilities [Abstract]    
Payroll and social security payable $ 177,407 $ 183,249
VAT liabilities 79,060 79,085
Other tax liabilities 36,203 30,927
Termination benefits 1,501 1,816
Related Parties (Note 26) 3,341 6,215
Asset retirement obligation (Note 19) 9,851 2,659
Others 43,853 53,050
Other liabilities – Current $ 351,216 $ 357,001