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FINANCE LEASE OBLIGATIONS (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Disclosure of detailed information about property, plant and equipment [line items]    
Less: Future interest charges $ (54) $ (71)
Present value of lease payments 1,134 1,819
Less: current portion (692) (950)
Non-current portion 442 869
Not Later Than One Year [Member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Contractual maturities 716 943
Later Than One Year And Not Later Than Five Years [Member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Contractual maturities 444 947
Later Than Five Years [Member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Contractual maturities $ 28