Pro Forma Financial Information (Detail) (WestwoodOne Acquisition and Townsquare Transaction, USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
WestwoodOne Acquisition and Townsquare Transaction
Business Acquisition, Pro Forma Information [Line Items]
Net revenues	$ 1,245,715	$ 1,263,188	$ 466,044
Net income (loss)	$ 68,110	$ (164,781)	$ 51,301

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463

Name:	us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration