Document And Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 30, 2015
Document Information [Line Items]
Entity Registrant Name	RADIO ONE, INC.
Entity Central Index Key	0001041657
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Trading Symbol	ROIA
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2015
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2015
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		2,159,951
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		2,861,843
Common Class C [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		2,928,906
Common Class D [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		41,846,917