INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Federal and state income tax loss carryforwards	$ 72,600	$ 88,815
Share-based compensation	3,636	3,432
Investments - impairments	350	350
Lease rental obligations	2,232	3,469
Deferred compensation	8,756	8,938
Interest Expense Limitation Carryforward	13,580	0
Debt fair value adjustment	1,429	4,081
Reserves	551	514
Lease liability	68,512	71,968
Employee benefits	2,046	1,673
Provision for doubtful accounts	4,023	5,043
Other non-current	5,106	8,193
Total deferred tax assets before valuation allowance	182,821	196,476
Valuation allowance	(21,249)	(24,399)	$ (25,440)	$ (25,761)
Total deferred tax assets	161,572	172,077
Deferred tax liabilities:
Lease ROU asset	(61,240)	(63,186)
Property, equipment and certain intangibles	(46,668)	(49,908)
Broadcasting licenses and goodwill	(541,329)	(532,381)
Total deferred tax liabilities	(649,237)	(645,475)
Total net deferred tax liabilities	$ (487,665)	$ (473,398)