Goodwill and Other Intangible Assets - Composition of Company's Acquired Intangible Assets and Associated Accumulated Amortization (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Schedule Of Intangible Assets [Line Items]    
Gross Carrying Amount $ 91,490 $ 91,490
Accumulated Amortization 71,678 69,141
Net Carrying Amount 19,812 22,349
Intangible assets not subject to amortization:    
FCC licenses 220,701 220,701
Total intangible assets 220,701 220,701
Television network affiliation agreements [Member]
    
Schedule Of Intangible Assets [Line Items]    
Weighted average remaining life in years 8 years  
Gross Carrying Amount 65,089 65,089
Accumulated Amortization 46,530 44,210
Net Carrying Amount 18,559 20,879
Customer base [Member]
    
Schedule Of Intangible Assets [Line Items]    
Weighted average remaining life in years 3 years  
Gross Carrying Amount 746 746
Accumulated Amortization 473 382
Net Carrying Amount 273 364
Other [Member]
    
Schedule Of Intangible Assets [Line Items]    
Weighted average remaining life in years 18 years  
Gross Carrying Amount 25,655 25,655
Accumulated Amortization 24,675 24,549
Net Carrying Amount $ 980 $ 1,106