CONDENSED CONSOLIDATING FINANCIAL STATEMENTS: (Details Textual) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Radio One, Inc. [Member]	Dec. 31, 2012 Radio One, Inc. [Member]	Dec. 31, 2012 Reach Media [Member]	Feb. 28, 2005 Reach Media [Member]
Noncontrolling Interest, Ownership Percentage By Parent					80.00%	51.00%
Indefinite-Lived License Agreements	$ 672,624	$ 673,994	$ 266,800	$ 266,800

Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the capitalized costs to acquire rights under a license arrangement (for example, to sell specified products in a specified territory) having an indefinite period of benefit.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

Name:	us-gaap_IndefiniteLivedLicenseAgreements
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant