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LOANS AND BORROWINGS - Schedule of Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Debt Disclosure [Abstract]
Convertible debentures	$ 3,220	$ 0
Secured note	0	250
Wyoming Industrial Development Revenue Bond loan	3,179	3,291
Finance leases and other	0	41
Total current loans and borrowings	6,399	3,582
Convertible debentures	12,881	14,624
Secured note	0	224
Wyoming Industrial Development Revenue Bond loan	11,678	14,078
Finance leases and other	0	11
Total long-term loans and borrowings	$ 24,559	$ 28,937

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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.

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Carrying value as of the balance sheet date of portion of long-term loans payable due within one year or the operating cycle if longer.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying value as of the balance sheet date of the portion of long-term, collateralized debt obligations due within one year or the operating cycle, if longer. Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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