Document and Entity Information (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Jun. 30, 2011	Mar. 23, 2012 Class A Common Stock	Mar. 23, 2012 Class B Common Stock	Mar. 23, 2012 Class C Common Stock	Mar. 23, 2012 Class D Common Stock
Entity Registrant Name	RADIO ONE, INC.
Entity Central Index Key	0001041657
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Trading Symbol	roia
Entity Common Stock Shares Outstanding			2,731,860	2,861,843	3,121,048	41,409,667
Document Type	10-K
Amendment Flag	true
Document Period End Date	Dec. 31, 2011
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2011
Entity Well Known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float		$ 52.6
Amendment Description	This Amendment No. 1 to our Annual Report on Form 10-K for the year ended December 31, 2011 (the -Amended 10-K”), amends our Annual Report on Form 10-K for the year ended December 31, 2011, filed with the Securities and Exchange Commission on March 30, 2012 (the “Original 10-K”). This Amended 10-K amends the Original 10-K for the purpose of amending its previously filed consolidated statement of cash flows for the year ended December 31, 2011 for the three and six-month periods ended June 30, 2011 and for the three and nine-month periods ended September 30, 2011 to adjust certain items contained therein. As a result of these adjustments, net cash flows provided by operating activities for the year ended December 31, 2011 decreased by approximately $23.4 million, net cash flows provided by investing activities for the year ended December 31, 2011 increased by approximately $23.4 million, and net cash flows used in financing activities were unchanged. The adjustments have no impact on the net increase in cash and cash equivalents for the year ended December 31, 2011 or the cash and cash equivalents balance as of December 31, 2011. In addition, these adjustments have no impact to the consolidated balance sheet as of December 31, 2011, or the consolidated statement of operations and consolidated statement of changes in stockholders’ equity for the year ended December 31, 2011. This Amended 10-K does not reflect events occurring after the filing of the Original 10-K and does not modify or update the disclosure in the Original 10-K, other than the amendments noted above, the evaluation and current developments of controls and procedures in Item 9A, the filing of consents of our independent registered public accounting firm, and the filing of certifications of our principal executive officer and principal financial officer pursuant to Rule 13a-14 of the Securities Exchange Act of 1934 and Section 906 of the Sarbanes-Oxley Act of 2002.