ASSETS HELD FOR SALE - Narrative (Details) - Disposal Group, Held-for-sale, Not Discontinued Operations $ in Thousands		6 Months Ended
	Apr. 20, 2021 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($) numberOfStations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal of asset, consideration | $		$ 528	$ 21,407
Gain on sale | $	$ 4,000
Transaction completion period		1 year
Equipment And Broadcasting License
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal of asset, consideration | $			$ 21,400
Urban One, Inc. | NORTH CAROLINA
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of stations to be exchanged			4
Urban One, Inc. | MISSOURI
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of stations to be exchanged			1
Urban One, Inc. | DISTRICT OF COLUMBIA
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of stations to be exchanged			1
Urban One, Inc. | PENNSYLVANIA
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of stations to be exchanged			1