Goodwill and Other Intangible Assets - Summary of other intangible assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Carrying amount:
Total carrying amount	$ 130,109	$ 104,709
Accumulated amortization:
Total accumulated amortization	(33,064)	(24,662)
Net amortizable intangible assets	97,045us-gaap_FiniteLivedIntangibleAssetsNet	80,047us-gaap_FiniteLivedIntangibleAssetsNet
Total other intangible assets	189,260	137,862
Licensing Agreements [Member]
Accumulated amortization:
Other indefinite-lived intangible assets - FCC licenses	92,215	57,815
Television network affiliation relationships
Carrying amount:
Total carrying amount	93,944	78,844
Accumulated amortization:
Total accumulated amortization	(14,092)	(9,691)
Customer lists and advertiser relationships
Carrying amount:
Total carrying amount	30,404	22,304
Accumulated amortization:
Total accumulated amortization	(16,416)	(13,138)
Other
Carrying amount:
Total carrying amount	5,761	3,561
Accumulated amortization:
Total accumulated amortization	$ (2,556)	$ (1,833)

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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-Publisher FASB

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