SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) $ in Thousands							3 Months Ended						12 Months Ended
	Oct. 01, 2023 USD ($)	Apr. 21, 2023 USD ($)	Feb. 14, 2023 USD ($)	Nov. 01, 2022	Oct. 01, 2022 USD ($)	Nov. 30, 2016 USD ($)	Dec. 31, 2023 USD ($) item	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2023 USD ($) segment item	Dec. 31, 2022 USD ($) segment	Mar. 08, 2023	Feb. 28, 2023 USD ($)	Jan. 01, 2023 USD ($)	Dec. 31, 2021 USD ($)	Jul. 31, 2021 USD ($)	Jan. 25, 2021 USD ($)	Jan. 08, 2021	Apr. 10, 2015 USD ($)
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Accumulated deficit							$ (733,371)						$ (733,371)	$ (736,010)
Number of independently formatted, revenue producing broadcast stations | item							72						72
Number of FM or AM stations owned or operated | item							57						57
Number of HD stations owned or operated | item							13						13
Number of low power television stations owned or operated | item							2						2
Number of most populous market | item							13						13
Number of reportable segments | segment													4	4
Restricted cash							$ 480						$ 480	$ 26,475
Carrying value of debt							725,000						725,000	750,000
Net Revenue													477,690	484,604
Allowance for doubtful accounts receivable (in dollars)							8,638						8,638	9,223
Investment income (loss) in unconsolidated joint venture													200
Cash received in Escrow													13,000
Reassessed Estimated Fair Value of Award							$ 23,000						23,000	25,700
Selling, General and Administrative Expense, Total													173,569	160,642
Amortization of Intangible Assets													$ 1,100	3,700
Property, Plant and Equipment, Useful Life							3 years						3 years
Operating income (loss)													$ (31,571)	91,089
Goodwill							$ 216,599						216,599	216,599				$ 223,402
Operating Expenses, Total													509,261	393,515
Unearned Event Income													$ 4,864	5,708
Percentage Of Award Amount							4.00%						4.00%
Impairment of Long-Lived Assets Held-for-use													$ 129,278	40,683
Net Revenue													477,690	484,604
Operating Lease, Right-of-Use Asset							$ 31,649						31,649	31,879
Operating lease, liability							33,025						33,025
INTEREST EXPENSE													56,196	61,751
Goodwill impairment charges													0	7,240
Redeemable noncontrolling interest							16,520						16,520	31,923
Radio broadcasting licenses							375,296						375,296	488,419
Other Liabilities, Current							42,831						42,831	39,682
OTHER INCOME, NET													96,084	16,083
Proceeds from sale of available for sale debt securities													136,826
Gross realized gains													96,826
RVAEH
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Investment income (loss) in unconsolidated joint venture			$ 200
Equity Method Investments							$ 0						$ 0
Percentage of ownership of equity interest excluding interest in entity			50.00%
Percentage of ownership interest				75.00%			75.00%			75.00%			75.00%					75.00%
Threshold period to get the option to purchase all of their shares after reaching certain milestone				10 years
Redeemable noncontrolling interest														6,600
Percentage of ownership interest purchased			25.00%
Investment purchased			$ 6,600
Software and web development [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Property, Plant and Equipment, Useful Life							3 years						3 years
RVA Entertainment Holdings LLC [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Restricted cash							$ 0						$ 0	26,000		$ 26,000
Churchhill Downs Incorporated | RVAEH
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Percentage of ownership of equity interest excluding interest in entity			50.00%
Host Community Agreement [Member] | RVA Entertainment Holdings LLC [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Upfront Payment																			$ 26,000
Adjusted Balance
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Allowance for doubtful accounts receivable (in dollars)														8,643			$ 600
Reserve for audience deficiency
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Contract with customer liability revenue recognized													6,000
Continuing Operations [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Marketing and Advertising Expense													27,100	31,300
Barter Transactions [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Net Revenue													3,200	2,000
Cost of Goods and Services Sold													1,700	1,300
Selling, General and Administrative Expense, Total													1,500	700
Net Revenue													3,200	2,000
Radio Broadcasting
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Sales Commissions and Fees													18,800	18,400
Radio Broadcasting Segment
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Goodwill							29,979						29,979	29,979				$ 36,782
Goodwill impairment charges													0	7,240
Impairment charge, indefinite lived intangible asset													129,300
Fantastic Voyage [Member] | Reach Media
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Net Revenue													9,700
Operating income (loss)													1,750
Operating Expenses, Total													8,000
Net Revenue													9,700
Digital Segment [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Goodwill							$ 7,222						7,222	7,222				$ 7,222
Goodwill impairment charges													$ 0	$ 0
Launch support asset
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Finite lived intangible assets weighted average amortization period													8 years 1 month 6 days	8 years 1 month 6 days
Finite Lived Intangible Assets Remaining Weighted Average Amortization Period							2 years 10 months 24 days						2 years 10 months 24 days	3 years 9 months 18 days
Payment for launch support													$ 4,300	$ 9,300
Amortization of Intangible Assets													$ 5,000	4,400
Licensing Agreements [Member] | Minimum
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Finite-lived intangible asset, useful life							1 year						1 year
Licensing Agreements [Member] | Maximum
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Finite-lived intangible asset, useful life							5 years						5 years
Radio Broadcasting Licenses [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Radio broadcasting licenses							$ 375,300						$ 375,300
Impairment charge, indefinite lived intangible asset	$ 0				$ 7,400		5,000	$ 85,400	$ 22,100	$ 16,800	$ 15,500	$ 10,600	129,278	33,443
Goodwill and Radio Broadcasting Licenses [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Goodwill and intangible assets impairment													129,300	40,700
Tom Joyner Foundation Inc [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Amount due from related parties							1,000						1,000	2,300
Chief Executive Officer
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Related party expenses													3,200	3,800
Amount due from related parties							300						300	1,500
Due from related party							200						200	200
ABL Facility [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Long-term Debt, Gross							0						0	0
7.375% Senior Secured Notes due February 2028
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Long-term Debt, Gross							725,000						725,000	750,000
Fair value of debt							616,300						616,300	646,900
Carrying value of debt							$ 725,000						$ 725,000	750,000
Debt Instrument, Interest Rate, Stated Percentage							7.375%						7.375%							7.375%	7.375%
Face amount of debt																				$ 825,000
PPP loan
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Other Income												$ 7,600
Tv One Llc [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Sales Commissions and Fees													$ 19,400	20,100
Reach Media Inc
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent							90.00%						90.00%
Urban One [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent							100.00%						100.00%
Customer Advances [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Net Revenue													$ 3,700
Net Revenue													3,700
Unearned Income [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Net Revenue													5,700
Net Revenue													5,700
MGM National Harbor [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Investment Owned, at Cost						$ 35,000																$ 5,000
Exercisable period of put rights						30 days
Percentage of ownership of equity interest excluding interest in entity															100.00%
Other Income													0	$ 8,800
Proceeds from sale of available for sale debt securities		$ 136,800
Gross realized gains		$ 96,800											$ 96,826