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Equity Method Investment (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 30, 2014
Mar. 31, 2013
Dec. 29, 2013
Schedule of Equity Method Investments [Line Items]      
Acquired interest in joint venture, Hub Television Networks, LLC. (in hundredths) 50.00%    
Earnings (loss) of joint venture $ 1,336 $ (1,064)  
Investment in joint venture $ 323,212 $ 329,683 $ 321,876