Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary of the carrying amount of goodwill and intangible assets
Gross carrying amount	$ 41,275	$ 41,275
Accumulated amortization	(1,203)	(968)
Net	40,072	40,307	40,543
Goodwill [Member]
Summary of the carrying amount of goodwill and intangible assets
Gross carrying amount	13,293	13,293
Net	13,293	13,293
Broadcast licenses [Member]
Summary of the carrying amount of goodwill and intangible assets
Gross carrying amount	37,430	37,430
Net	37,430	37,430
Other intangible assets [Member]
Summary of the carrying amount of goodwill and intangible assets
Gross carrying amount	285	285
Net	285	285
Network affiliation agreement [Member]
Summary of the carrying amount of goodwill and intangible assets
Gross carrying amount	3,560	3,560
Accumulated amortization	(1,203)	(968)
Net	$ 2,357	$ 2,592