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LOANS AND BORROWINGS - Schedule of Debt (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Debt Disclosure [Abstract] |  |
Convertible debentures | $ 0 | $ 3,095
Wyoming Industrial Development Revenue Bond loan | 3,414 | 3,224
Total current loans and borrowings | 3,414 | 6,319
Convertible debentures | 16,636 | 12,381
Wyoming Industrial Development Revenue Bond loan | 7,441 | 10,854
Total long-term loans and borrowings | $ 24,077 | $ 23,235

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- Definition The portion of the carrying value of long-term convertible debt as of the balance sheet date that is scheduled to be repaid within one year or in the normal operating cycle if longer. Convertible debt is a financial instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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