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Variable Interest Entities VIEs (Tables)
6 Months Ended
Jun. 30, 2014
Variable Interest Entities VIEs  
Consolidated VIE assets and liabilities
   June 30, 2014 December 31, 2013
(Dollars in thousands)     
Assets     
 Cash and cash equivalents$ 2,466 $ 2,076
 Other current assets  71   1,184
 Licenses  311,476   310,475
 Property, plant and equipment, net  15,311   18,600
 Other assets and deferred charges  148   511
  Total assets$ 329,472 $ 332,846
        
Liabilities     
 Current liabilities$ 29 $ 46
 Deferred liabilities and credits  1,689   3,139
  Total liabilities$ 1,718 $ 3,185