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LOANS AND BORROWINGS (Tables)
3 Months Ended
Mar. 31, 2016
Schedule of Debt [Table Text Block]
    March 31,     December 31,  
    2016     2015  
Current portion of loans and borrowings:            
 Secured note (b) $ -   $ 250  
 Wyoming Industrial Development Revenue Bond loan (c)   3,271     3,291  
 Finance leases and other   38     41  
Total current loans and borrowings $ 3,309   $ 3,582  
Long-term loans and borrowings:            
 Convertible debentures (a) $ 16,198   $ 14,624  
 Secured note (b)   -     224  
 Wyoming Industrial Development Revenue Bond loan (c)   13,108     14,078  
 Finance leases and other   -     11  
Total long-term loans and borrowings $ 29,306   $ 28,937