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RELATED PARTIES - Key Management Compensation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
RELATED PARTIES      
Salaries and other short-term employee benefits $ 1,526 $ 876 $ 734
Post-employment benefits 61 43 36
Share-based payments 710 468 510
Other long-term benefits $ 33 $ 26 $ 26