SUPPLEMENTAL CASH FLOW DISCLOSURES ON NON-CASH ACTIVITIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Activities
Barter revenues	$ 10,107	$ 9,616	$ 16,914
Barter expenses	10,094	9,604	16,741
Financing Activities
Increase in paid-in capital from the issuance of RSUs	10,836	10,073	12,926
Decrease in paid-in capital from the forfeiture of RSUs	(678)	(624)	(1,753)
Net paid-in capital of RSUs issued (forfeited)	10,158	9,449	11,173
Investing Activities
Noncash additions to property and equipment and intangibles	(1,813)	2,901	803
Net radio station assets given up in a market	(21,407)	0	(22,795)
Net radio station assets acquired in a market	25,487	0	22,500
Contingent Consideration	$ 7,714	$ 0	$ 0