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Equity Method Investment (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 29, 2014
Jun. 30, 2013
Jun. 29, 2014
Jun. 30, 2013
Dec. 29, 2013
Schedule of Equity Method Investments [Line Items]          
Acquired interest in joint venture, Hub Television Networks, LLC. (in hundredths) 50.00%   50.00%    
Earnings (loss) of joint venture $ 2,263 $ 131 $ 3,599 $ (933)  
Investment in joint venture $ 325,475 $ 329,813 $ 325,475 $ 329,813 $ 321,876