Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Summary of the carrying amount of goodwill and intangible assets
Gross carrying amount	$ 41,275	$ 41,275
Accumulated amortization	(1,262)	(1,203)
Net	40,013	40,072
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	(1,262)	(1,203)
Net	$ 2,298	$ 2,357