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Investment in Global (Details Narrative) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Ownership percentage of Global's outstanding shares 35.00%    
Foreign currency translation adjustment during period $ 93 $ (1,381)  
Unrealized loss on investments during period (4,552) (4,858)  
Cumulative unrealized gain $ 4,361   $ 8,820