CONDENSED CONSOLIDATING FINANCIAL STATEMENTS: (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Total assets	$ 1,460,195	$ 1,486,482
Scenario, Previously Reported [Member]
Total assets	1,460,195	1,486,482
Change from Guarantor to Non-Guarantor [Member] | Restatement Adjustment [Member]
Total assets	0	0
Change from Radio One, Inc. to Guarantor [Member] | Restatement Adjustment [Member]
Total assets	0	0
Change from Radio One, Inc. to Non-Guarantor [Member] | Restatement Adjustment [Member]
Total assets	0	0
Restatement of Consolidation Adjustments [Member] | Restatement Adjustment [Member]
Total assets	0	0
Radio One [Member]
Total assets	1,061,814	1,075,429
Radio One [Member] | Scenario, Previously Reported [Member]
Total assets	1,445,892	1,472,090
Radio One [Member] | Change from Guarantor to Non-Guarantor [Member] | Restatement Adjustment [Member]
Total assets	0	0
Radio One [Member] | Change from Radio One, Inc. to Guarantor [Member] | Restatement Adjustment [Member]
Total assets	(75,862)	(96,600)
Radio One [Member] | Change from Radio One, Inc. to Non-Guarantor [Member] | Restatement Adjustment [Member]
Total assets	(184,767)	(185,903)
Radio One [Member] | Restatement of Consolidation Adjustments [Member] | Restatement Adjustment [Member]
Total assets	(123,449)	(114,158)
Combined Subsidiary Guarantors [Member]
Total assets	675,209	699,284
Combined Subsidiary Guarantors [Member] | Scenario, Previously Reported [Member]
Total assets	599,347	602,684
Combined Subsidiary Guarantors [Member] | Change from Guarantor to Non-Guarantor [Member] | Restatement Adjustment [Member]
Total assets	0	0
Combined Subsidiary Guarantors [Member] | Change from Radio One, Inc. to Guarantor [Member] | Restatement Adjustment [Member]
Total assets	75,862	96,600
Combined Subsidiary Guarantors [Member] | Change from Radio One, Inc. to Non-Guarantor [Member] | Restatement Adjustment [Member]
Total assets	0	0
Combined Subsidiary Guarantors [Member] | Restatement of Consolidation Adjustments [Member] | Restatement Adjustment [Member]
Total assets	0	0
Non-Guarantor Subsidiaries [Member]
Total assets	184,767	185,903
Non-Guarantor Subsidiaries [Member] | Scenario, Previously Reported [Member]
Total assets	0	0
Non-Guarantor Subsidiaries [Member] | Change from Guarantor to Non-Guarantor [Member] | Restatement Adjustment [Member]
Total assets	0	0
Non-Guarantor Subsidiaries [Member] | Change from Radio One, Inc. to Guarantor [Member] | Restatement Adjustment [Member]
Total assets	0	0
Non-Guarantor Subsidiaries [Member] | Change from Radio One, Inc. to Non-Guarantor [Member] | Restatement Adjustment [Member]
Total assets	184,767	185,903
Non-Guarantor Subsidiaries [Member] | Restatement of Consolidation Adjustments [Member] | Restatement Adjustment [Member]
Total assets	0	0
Consolidation Adjustments [Member]
Total assets	(461,595)	(474,134)
Consolidation Adjustments [Member] | Scenario, Previously Reported [Member]
Total assets	(585,044)	(588,292)
Consolidation Adjustments [Member] | Change from Guarantor to Non-Guarantor [Member] | Restatement Adjustment [Member]
Total assets	0	0
Consolidation Adjustments [Member] | Change from Radio One, Inc. to Guarantor [Member] | Restatement Adjustment [Member]
Total assets	0	0
Consolidation Adjustments [Member] | Change from Radio One, Inc. to Non-Guarantor [Member] | Restatement Adjustment [Member]
Total assets	0	0
Consolidation Adjustments [Member] | Restatement of Consolidation Adjustments [Member] | Restatement Adjustment [Member]
Total assets	$ 123,449	$ 114,158