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Derivative Instruments (Tables)
3 Months Ended
Mar. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Gain Loss on Derivative Instruments
(in thousands)

Three months ended

March 31,

  2016 2015
Shares of Kinross 100  180 
     
  Proceeds from sale of call $ 40  $ 84 
  Loss (gain) on derivative instrument  1  (82) 
    Ending other liability balance $ 41  $ 2