ASSETS HELD FOR SALE - Narrative (Details) $ in Millions		3 Months Ended			12 Months Ended
	Apr. 20, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) station	Jun. 30, 2020 USD ($) license	Dec. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2019 USD ($)
Sold
Long Lived Assets Held-for-sale [Line Items]
Disposal of asset, consideration			$ 0.4
Gain (loss) on sale			(0.1)
Sold | Equipment And Broadcasting License
Long Lived Assets Held-for-sale [Line Items]
Carrying value of disposed assets							$ 10.2
Disposal of asset, consideration				$ 10.8
Gain (loss) on sale				0.2
Held-for-sale
Long Lived Assets Held-for-sale [Line Items]
Carrying value of disposed assets			$ 21.4	$ 0.5
Gain (loss) on sale	$ 4.0
Number of broadcasting licenses | license				2
Held-for-sale | Land, Land Improvements And Equipment, Sacramento CA
Long Lived Assets Held-for-sale [Line Items]
Carrying value of disposed assets						$ 0.5
Gain (loss) on sale		$ 4.6
Held-for-sale | Land And Equipment, Sacramento CA
Long Lived Assets Held-for-sale [Line Items]
Carrying value of disposed assets		$ 1.0			$ 1.0
Expected transaction completion period					1 year
Charlotte, North Carolina | Held-for-sale | Urban One, Inc.
Long Lived Assets Held-for-sale [Line Items]
Number of stations | station			4
St. Louis, Missouri | Held-for-sale | Urban One, Inc.
Long Lived Assets Held-for-sale [Line Items]
Number of stations | station			1
Washington, D.C. | Held-for-sale | Urban One, Inc.
Long Lived Assets Held-for-sale [Line Items]
Number of stations | station			1
Philadelphia, Pennsylvania | Held-for-sale | Urban One, Inc.
Long Lived Assets Held-for-sale [Line Items]
Number of stations | station			1