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Derivative Instruments (Tables)
6 Months Ended
Jun. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Gain Loss on Derivative Instruments
(in thousands)

Three months ended

June 30,

Six months ended

June 30,

  2016 2015 2016 2015
  (Loss) gain on Kinross calls $ (82) $  1   $ (83) $ 83 
  Gain on Vendetta Warrants 215  -   215  -  
Total $133  $  1  $132  $ 83