ASSETS HELD FOR SALE AND DISCONTINUED OPERATIONS - Narrative (Details)	3 Months Ended
	Dec. 31, 2020 USD ($) numberOfStations	Jun. 30, 2020 USD ($) license	Dec. 31, 2019 USD ($)
Sold
Long Lived Assets Held-for-sale [Line Items]
Disposal of asset, consideration	$ 400,000
Gain (loss) on sale	(100,000)
Sold | Equipment And Broadcasting License
Long Lived Assets Held-for-sale [Line Items]
Carrying value of disposed assets			$ 10,200,000
Disposal of asset, consideration		$ 10,800,000
Gain (loss) on sale		200,000
Held-for-sale
Long Lived Assets Held-for-sale [Line Items]
Carrying value of disposed assets	$ 21,400,000	$ 500,000
Number of broadcasting licenses | license		2
Charlotte, North Carolina | Held-for-sale | Urban One, Inc.
Long Lived Assets Held-for-sale [Line Items]
Number of stations | numberOfStations	4
St. Louis, Missouri | Held-for-sale | Urban One, Inc.
Long Lived Assets Held-for-sale [Line Items]
Number of stations | numberOfStations	1
Washington, D.C. | Held-for-sale | Urban One, Inc.
Long Lived Assets Held-for-sale [Line Items]
Number of stations | numberOfStations	1
Philadelphia, Pennsylvania | Held-for-sale | Urban One, Inc.
Long Lived Assets Held-for-sale [Line Items]
Number of stations | numberOfStations	1