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Variable Interest Entities VIEs (Tables)
12 Months Ended
Dec. 31, 2013
Variable Interest Entities VIEs  
Consolidated VIE assets and liabilities
December 31,2013 2012
(Dollars in thousands)     
Assets     
 Cash and cash equivalents$ 2,076 $ 5,849
 Other current assets  1,184   120
 Licenses  310,475   308,091
 Property, plant and equipment, net  18,600   16,443
 Other assets and deferred charges  511   887
 Total assets$ 332,846 $ 331,390
       
Liabilities     
 Current liabilities$ 46 $ 1,013
 Deferred liabilities and credits  3,139   3,024
 Total liabilities$ 3,185 $ 4,037