Goodwill and Other Intangible Assets - Summary of other intangible assets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Carrying amount:
Total carrying amount	$ 318,967	$ 117,963
Accumulated amortization:
Total accumulated amortization	(43,595)	(22,919)
Net amortizable intangible assets	275,372	95,044
Total other intangible assets	479,187	187,259
Licensing Agreements [Member]
Accumulated amortization:
Other indefinite-lived intangible assets - FCC licenses	203,815	92,215
Television network affiliation relationships
Carrying amount:
Total carrying amount	248,444	93,944
Accumulated amortization:
Total accumulated amortization	(24,590)	(14,092)
Customer lists and advertiser relationships
Carrying amount:
Total carrying amount	56,100	20,000
Accumulated amortization:
Total accumulated amortization	(17,092)	(7,765)
Other
Carrying amount:
Total carrying amount	14,423	4,019
Accumulated amortization:
Total accumulated amortization	$ (1,913)	$ (1,062)