ACQUISITIONS AND DISPOSITIONS - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Mar. 31, 2022
Asset Acquisition [Line Items]
Radio broadcasting licenses		$ 21,100,000
Right of use assets		1,700,000
Advertising credit liability		1,900,000
Operating lease liabilities		921,000
Unfavorable lease liability		812,000
Land and land improvements
Asset Acquisition [Line Items]
Property, plant and equipment		1,800,000
Towers and antennas
Asset Acquisition [Line Items]
Property, plant and equipment		2,000,000.0
Buildings
Asset Acquisition [Line Items]
Property, plant and equipment		517,000
Transmitters
Asset Acquisition [Line Items]
Property, plant and equipment		1,000,000.0
Studios
Asset Acquisition [Line Items]
Property, plant and equipment		712,000
Vehicles
Asset Acquisition [Line Items]
Property, plant and equipment		53,000
Furniture and fixtures
Asset Acquisition [Line Items]
Property, plant and equipment		200,000
Computer equipment
Asset Acquisition [Line Items]
Property, plant and equipment		67,000
Other equipment
Asset Acquisition [Line Items]
Property, plant and equipment		$ 19,000
Audacy and Gateway
Asset Acquisition [Line Items]
Net gain from transaction	$ 404,000