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Other Income (Tables)
 12 Months Ended
Dec. 31, 2017
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Summary of Other Income
           Years Ended December 31  

(in thousands)

      Note       2017       2016  

Dividend income

      $ 60     $ 37  

Interest income

        407       147  

Proceeds relative to the Mercator Minerals bankruptcy

        1,022       -  

Guarantee fees - Primero Revolving Credit Facility

      27       2,683       -  

Gain on fair value adjustment of convertible note receivable

      16       215       -  

Loss on fair value adjustment of share purchase warrants held

      17       (6 )      -  

Fees for contract amendments and reconciliations

              9,424       -  

Other

              14       13  

Total other income

            $ 13,819     $ 197