Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended									12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Mar. 31, 2002	Dec. 31, 2012 item	Dec. 31, 2011	Dec. 31, 2010
Segment Information
Number of reportable segments										2
Reportable segments
Revenues	$ 103,610	$ 93,818	$ 96,336	$ 92,849	$ 108,301	$ 84,594	$ 67,852	$ 63,510		$ 386,613	$ 324,257	$ 241,328
Segment Adjusted EBITDA before corporate overhead										152,287	153,342	134,736
Less corporate overhead										(26,588)	(18,748)	(18,588)
Adjusted EBITDA										125,699	134,594	116,148
Less:
Acquisition and integration	(2,957)	(1,379)	(2,707)	(1,470)	(1,343)	(10,571)	(3,195)	(10)		(8,513)	(15,119)	(269)
Share-based compensation										(17,470)	(12,430)	(4,805)
Depreciation and amortization										(57,300)	(38,736)	(29,236)
Goodwill impairment	(11,427)	(208,166)							(131,300)	(219,593)
Income (loss) from operations										(177,177)	68,309	81,838
Television
Reportable segments
Revenues										245,961	246,780	222,894
Segment Adjusted EBITDA before corporate overhead										129,645	138,299	133,398
Online
Reportable segments
Revenues										140,652	77,477	18,434
Segment Adjusted EBITDA before corporate overhead										22,642	15,043	1,338
Less:
Goodwill impairment		$ (11,400)								$ (219,593)