Acquisitions - Preliminary Fair Value of Identifiable Intangible Assets and Estimated Useful Lives (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Acquired Finite Lived Intangible Assets [Line Items]
Intangible Assets acquired	$ 760,636
Copyrights and other tradenames [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Amortizable intangible assets, life in years	23 years
Intangible Assets acquired	$ 333,912
Broadcast licenses [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Amortizable intangible assets, life in years	25 years
Intangible Assets acquired	$ 128,017
Customer lists [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Amortizable intangible assets, life in years	15 years
Intangible Assets acquired	$ 26,670
Advertiser lists [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Amortizable intangible assets, life in years	7 years
Intangible Assets acquired	$ 106,681
Acquired rights and other [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Amortizable intangible assets, life in years	20 years
Intangible Assets acquired	$ 165,356