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Non-controlling Interests (Tables)
9 Months Ended
Sep. 30, 2012
Non-controlling Interest [Abstract]  
Schedule of Variable Interest Entities [Table Text Block]
  September 30, 2012
  Assets Equity
  Carrying Value Classification Carrying Value Classification
 $ 10,445 Restricted cash$ 15,777 Non-controlling interest
   6,101 Construction in progress  769 Retained earnings attributable to General Communication, Inc. common stockholders
 $ 16,546  $ 16,546  
         
         
  December 31, 2011
  Assets Equity
  Carrying Value Classification Carrying Value Classification
 $ 15,910 Restricted cash$ 16,308 Non-controlling interest
   711 Construction in progress  313 Retained earnings attributable to General Communication, Inc. common stockholders
 $ 16,621  $ 16,621