Segment Information - Operating Segments, Profit (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Operating income
Operating income	$ 36,852	$ 22,037	$ 57,499	$ 41,291
Corporate and other expenses	(12,366)	(7,633)	(25,017)	(14,211)
Depreciation and amortization	(42,618)	(16,440)	(82,901)	(32,635)
Gain (loss) related to property and equipment, net	196	(992)	424	(221)
Merger-related and restructuring expenses	(3,616)	(9,314)	(8,893)	(14,066)
Operating Segments
Operating income
Operating income	95,256	56,416	173,886	102,424
Operating Segments | Broadcast
Operating income
Operating income	96,165	54,935	176,986	100,905
Operating Segments | Digital
Operating income
Operating income	$ (909)	$ 1,481	$ (3,100)	$ 1,519