Goodwill and Other Intangible Assets (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Intangible assets subject to amortization:
Gross carrying amount	$ 91,490	$ 90,990
Accumulated amortization	69,141	66,392
Net carrying amount	22,349	24,598
Intangible assets not subject to amortization:
FCC licenses	220,701	220,701
Intangible assets not subject to amortization	220,701	220,701
Television network affiliation agreements [Member]
Intangible assets subject to amortization:
Weighted average remaining life in years	9 years
Gross carrying amount	65,089	65,089
Accumulated amortization	44,210	41,577
Net carrying amount	20,879	23,512
Customer base [Member]
Intangible assets subject to amortization:
Weighted average remaining life in years	4 years
Gross carrying amount	746	746
Accumulated amortization	382	292
Net carrying amount	364	454
Other [Member]
Intangible assets subject to amortization:
Weighted average remaining life in years	17 years
Gross carrying amount	25,655	25,155
Accumulated amortization	24,549	24,523
Net carrying amount	$ 1,106	$ 632