Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenue (less agency commissions)	$ 226,681	$ 196,633	$ 430,142	$ 370,356
Operating expenses before depreciation, amortization and loss (gain) on disposal of assets, net:
Broadcast	133,545	117,335	267,016	225,903
Corporate and administrative	8,409	8,524	16,118	24,202
Depreciation	12,841	11,617	25,470	22,743
Amortization of intangible assets	6,657	4,242	12,224	8,130
Gain on disposals of assets, net	(77,326)	1,228	(76,799)	(420)
Operating expenses	84,126	142,946	244,029	280,558
Operating income	142,555	53,687	186,113	89,798
Other income (expense):
Miscellaneous income, net	1	141	8	710
Interest expense	(23,791)	(24,269)	(46,982)	(45,544)
Loss from early extinguishment of debt	(311)		(2,851)
Income before income taxes	118,454	29,559	136,288	44,964
Income tax expense	47,893	11,897	55,222	18,312
Net income	$ 70,561	$ 17,662	$ 81,066	$ 26,652
Basic per share information:
Net income (in dollars per share)	$ 0.98	$ 0.25	$ 1.13	$ 0.37
Weighted-average shares outstanding (in shares)	71,821	71,878	71,849	71,835
Diluted per share information:
Net income (in dollars per share)	$ 0.97	$ 0.24	$ 1.12	$ 0.37
Weighted-average shares outstanding (in shares)	72,501	72,748	72,510	72,665
Dividends declared per common share (in dollars per share)	$ 0	$ 0