Broadcast Licenses, Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Indefinite-lived Intangible Assets [Line Items]
Balance				$ 86,762				$ 88,460		$ 86,762	$ 88,460
Acquisitions										2,218	238
Impairment charge	$ 874	$ 0	$ 0	0	$ 1,936	$ 0	$ 0	0	$ 2,033	874	1,936	$ 2,033
Balance	88,106				86,762				88,460	88,106	86,762	88,460
Radio [Member]
Indefinite-lived Intangible Assets [Line Items]
Balance				77,155				78,872		77,155	78,872
Acquisitions										2,218	219
Impairment charge										(874)	(1,936)
Balance	78,499				77,155				78,872	78,499	77,155	78,872
Television [Member]
Indefinite-lived Intangible Assets [Line Items]
Balance				$ 9,607				$ 9,588		9,607	9,588
Acquisitions										0	19
Impairment charge										0	0
Balance	$ 9,607				$ 9,607				$ 9,588	$ 9,607	$ 9,607	$ 9,588