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LOANS AND BORROWINGS - Schedule of Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Debt Disclosure [Abstract]      
Convertible debentures $ 16,382   $ 0
Notes payable 484 $ 0  
Total current loans and borrowings 16,866 0  
Convertible debentures 0 15,880  
Total long-term loans and borrowings $ 0 $ 15,880