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Investment in Global (Tables)
12 Months Ended
Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]  
Market Value of Investment in Global

   December 31, 2014  December 31, 2013
           
Shares of Global Stock Held by HKN   12,805    12,462 
           
Closing Price of Global Stock  £0.50   £0.94 
           
Foreign Currency Exchange Rate   1.5586    1.6574 
           
Market Value of Investment in Global  $9,979   $19,312