Segment Information - Operating Segments, Profit (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Operating income
Operating income (loss)	$ (28,150)	$ (30,442)	$ 14,005	$ 27,057
Corporate and other expenses	(8,671)	(12,598)	(37,124)	(37,615)
Depreciation and amortization	(40,762)	(40,385)	(121,220)	(123,286)
Goodwill and other asset impairment	(112,511)	(52,862)	(112,511)	(52,862)
Merger-related expenses	(1,360)	(10,014)	(68,803)	(18,907)
Restructuring expenses	45	(1,132)	(4,933)	(1,132)
Operating Segments [Member]
Operating income
Operating income (loss)	135,252	86,645	358,058	260,531
Operating Segments [Member] | Broadcast [Member]
Operating income
Operating income (loss)	130,367	85,105	351,648	260,032
Operating Segments [Member] | Digital [Member]
Operating income
Operating income (loss)	4,885	1,540	6,410	499
Corporate and Other Expenses [Member]
Operating income
Corporate and other expenses	(8,671)	(12,598)	(37,124)	(37,615)
Segment Reconciling Items [Member]
Operating income
Depreciation and amortization	(40,762)	(40,385)	(121,220)	(123,286)
Gain (loss) related to property and equipment, net	(143)	(96)	538	328
Goodwill and other asset impairment	(112,511)	(52,862)	(112,511)	(52,862)
Merger-related expenses	(1,360)	(10,014)	(68,803)	(18,907)
Restructuring expenses	$ 45	$ (1,132)	$ (4,933)	$ (1,132)