Acquisition- Intangible Assets, Goodwill and Other (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended					9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014 Television	Dec. 31, 2013 Television	Sep. 30, 2014 Radio	Dec. 31, 2013 Radio	Sep. 30, 2014 Digital
Goodwill [Line Items]
Beginning Balance	$ 36,647	$ 35,912	$ 35,912	$ 735	$ 735
Goodwill, Acquired During Period	13,809					13,809
Ending Balance	$ 50,456	$ 35,912	$ 35,912	$ 735	$ 735	$ 13,809