Goodwill and Other Intangible Assets (Summary Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Gross Carrying Amount of Amortizable Intangible Assets	$ 915,649	$ 915,649
Accumulated amortization	(719,410)	(694,366)
Amortizable intangible assets, net of accumulated amortization	196,239	221,283
Trademarks	19,900	19,900
Intangible Assets, Gross, Excluding Goodwill	935,549	935,549
Total intangible assets, net	216,139	241,183
Affiliation Agreements And Affiliate Relationships [Member]
Gross Carrying Amount of Amortizable Intangible Assets	840,757	840,757
Accumulated amortization	(644,889)	(623,621)
Amortizable intangible assets, net of accumulated amortization	195,868	217,136
Advertiser Relationships [Member]
Gross Carrying Amount of Amortizable Intangible Assets	74,248	74,248
Accumulated amortization	(73,939)	(70,226)
Amortizable intangible assets, net of accumulated amortization	309	4,022
Other Amortizable Intangible Assets [Member]
Gross Carrying Amount of Amortizable Intangible Assets	644	644
Accumulated amortization	(582)	(519)
Amortizable intangible assets, net of accumulated amortization	$ 62	$ 125