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Variable Interest Entities (Table)
9 Months Ended
Sep. 30, 2011
Variable Interest Entity Classification Of Carrying Amount Assets And Liabilities Net [Abstract] 
Consolidated VIE assets and liabilities
  September 30, December 31,
 2011 2010
       
(Dollars in thousands)     
Assets     
 Cash$29,014 $1,673
 Other current assets 3,740  323
 Licenses 504,197  487,962
 Property, plant and equipment 23,998  1,548
 Other assets and deferred charges 4,439  
 Total assets$565,388 $491,506
       
Liabilities     
 Other current liabilities$1,125 $95
 Deferred liabilities and credits 8,616  
 Total liabilities$9,741 $95