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Impairment of Assets (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended9 Months Ended
Sep. 25, 2011
Jun. 26, 2011
Dec. 26, 2010
Sep. 26, 2010
Sep. 25, 2011
Sep. 26, 2010
Impairment of assets      
Impairment of assets$ 0$ 161,318 $ 16,148$ 161,318$ 16,148
Write-down of goodwill at the Regional Media Group 152,093  152,093 
Goodwill (less accumulated impairment losses)491,944 644,464 491,944 
Write-down of certain assets held for sale 9,225    
Impairment testing growth rate assumption  2.00%   
Impairment testing discount rate assumption 10.70%10.50%   
Other intangible assets acquired22,239 35,415 22,239 
Regional Media Group
      
Impairment of assets      
Goodwill (less accumulated impairment losses) 0    
Assets Held-for-sale
      
Impairment of assets      
Other intangible assets acquired $ 0