Segment Information (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2012
segment
Mar. 31, 2011
Segment Information    
Number of reportable segments 2  
Reportable segments    
Revenues $ 92,849 $ 63,510
Adjusted EBITDA 29,565 29,575
Less:    
Acquisition and integration (1,470) (10)
Share-based compensation (4,471) (1,294)
Depreciation and amortization (13,229) (6,850)
Income from operations 10,395 21,421
Television
   
Reportable segments    
Revenues 61,831 59,179
Adjusted EBITDA 29,138 29,675
Online
   
Reportable segments    
Revenues 31,018 4,331
Adjusted EBITDA $ 427 $ (100)