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Investment in Global (Tables)
12 Months Ended
Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract]  
Market Value of Investment in Global

   December 31, 2013  December 31, 2012
           
Shares of Global Stock Held by HKN   12,462    12,357 
           
Closing Price of Global Stock  £0.94   £1.18 
           
Foreign Currency Exchange Rate   1.6574    1.6259 
           
Market Value of Investment in Global  $19,312   $23,607