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EMPLOYEE BENEFITS (Details) - Schedule of movement of employee benefits - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Disclosure Of Defined Benefit Plans Abstract    
Opening balance $ 82,365 $ 101,087
Increase (decrease) current service provision 11,242 (7,384)
Benefits paid (4,390) (6,018)
Actuarial (gains) losses 10,636 5,819
Currency translation (6,283) (11,139)
Closing balance $ 93,570 $ 82,365