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LOANS AND BORROWINGS - Schedule of Debt (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Debt Disclosure [Abstract] |  |
Convertible debentures | $ 3,095 | $ 0
Secured note | 0 | 250
Wyoming Industrial Development Revenue Bond loan | 3,224 | 3,291
Finance leases and other | 0 | 41
Total current loans and borrowings | 6,319 | 3,582
Convertible debentures | 12,381 | 14,624
Secured note | 0 | 224
Wyoming Industrial Development Revenue Bond loan | 10,854 | 14,078
Finance leases and other | 0 | 11
Total long-term loans and borrowings | $ 23,235 | $ 28,937

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