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LOANS AND BORROWINGS - Schedule of Debt (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Current portion of loans and borrowings: |  |
Convertible debentures | $ 0 | $ 3,095
Wyoming Industrial Development Revenue Bond loan | 3,365 | 3,224
Total current loans and borrowings | 3,365 | 6,319
Long-term loans and borrowings: |  |
Convertible debentures | 16,389 | 12,381
Wyoming Industrial Development Revenue Bond loan | 8,312 | 10,854
Total long-term loans and borrowings | $ 24,701 | $ 23,235

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