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Variable Interest Entities VIEs (Tables)
9 Months Ended
Sep. 30, 2012
Variable Interest Entities VIEs  
Consolidated VIE assets and liabilities
  September 30, December 31,
  2012 2011
(Dollars in thousands)     
Assets     
 Cash and cash equivalents$ 7,894 $ 13,299
 Other current assets  4,004   3,719
 Licenses and other intangible assets  414,709   501,829
 Property, plant and equipment, net  31,006   27,642
 Other assets and deferred charges  3,895   3,612
 Total assets$ 461,508 $ 550,101
       
Liabilities     
 Current liabilities$ 9,503 $ 5,944
 Deferred liabilities and credits  5,481   5,481
 Total liabilities$ 14,984 $ 11,425