ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textual) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Nov. 30, 2016	Apr. 10, 2015
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Cost of Goods and Services Sold	$ 30,982,000	$ 34,892,000	$ 93,504,000	$ 99,798,000
Selling, General and Administrative Expense, Total	36,530,000	36,851,000	112,413,000	114,280,000
Reassessed Estimated Fair Value of Award	27,100,000		27,100,000		$ 32,300,000
Related Party Transaction, Due from (to) Related Party, Total	921,000		$ 921,000		1,100,000
Related Party Transaction, Terms and Manner of Settlement			Distributions from operating income or operating revenues, depending upon the year, are in the following order until the funds are depleted: up to $250,000 to the Foundation, reimbursement of Reach’s expenditures, up to $1.0 million fee to Reach, a performance bonus of up to 50% of remaining operating income to Reach, with the balance remaining with the Foundation.
Revenues	110,730,000	112,078,000	$ 325,557,000	331,005,000
Operating Income (Loss)	32,101,000	3,531,000	64,229,000	32,092,000
Goodwill, Impairment Loss			2,712,000
Income on cost method investments	1,700,000	1,500,000	5,100,000	4,500,000
Increase Decrease Of Launch Support		0	0	(1,848,000)
Operating Expenses, Total	78,629,000	108,547,000	261,328,000	298,913,000
Unearned Event Income	3,163,000	2,819,000	3,163,000	2,819,000	4,117,000
Marketing Services Fee Receivable	2,000,000		2,000,000
Non Cash Launch Support	976,000		976,000
Liabilities, Fair Value Adjustment	6,600,000
Cable Television Affiliate Fees [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Revenues	26,244,000	26,558,000	81,513,000	80,021,000
Adjustment in Revenue			2,000,000
Customer Advances [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Revenues	241,000		2,000,000
Credit Facility 2017 [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Long-term Debt, Gross	344,800,000		344,800,000		347,400,000
Debt Instrument, Fair Value Disclosure					340,400,000
Staffing And Recruiting Services [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Related Party Transaction, Amounts of Transaction	0	125,000	25,000	341,000	425,000
Comcast Note [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Long-term Debt, Gross	11,900,000		11,900,000
Debt Instrument, Fair Value Disclosure	$ 11,900,000		$ 11,900,000
Debt Instrument, Interest Rate, Stated Percentage	10.47%		10.47%
Debt Instrument, Face Amount	$ 11,900,000		$ 11,900,000		$ 11,900,000
MGM National Harbor [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Investment Owned, at Cost						$ 35,000,000	$ 5,000,000
Employment Agreement Award [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Selling, General and Administrative Expense, Total	6,600,000	1,400,000	3,700,000	3,900,000
Barter Transactions [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Advertising Barter Transactions, Advertising Barter Revenue	713,000	574,000	2,200,000	1,600,000
Cost of Goods and Services Sold	673,000	534,000	2,100,000	1.5
Selling, General and Administrative Expense, Total	40,000	40,000	121,000	121,000
Radio broadcasting and Reach Media segments [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Sales Commissions and Fees	6,000,000	6,100,000	$ 17,200,000	18,200,000
Launch Support Assets [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Finite Lived Intangible Assets Weighted Average Amortization Period			8 years 9 months 18 days		9 years 6 months
Finite Lived Intangible Assets Remaining Weighted Average Amortization Period			6 years 3 months 18 days		7 years 1 month 6 days
Amortization of Intangible Assets	106,000	108,000	$ 317,000	324,000
Detroit Market Radio Broadcasting Licenses [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			3,800,000
Houston And Columbus [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		16,400,000		29,100,000
Tom Joyner Foundation Inc [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Related Party Transaction, Due from (to) Related Party, Total	26,000		26,000		$ 26,000
Tom Joyner Limited [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Related Party Transaction, Due from (to) Related Party, Total	2,000		2,000		4,000
Senior Subordinated Notes due February 2020 [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Long-term Debt, Gross	245,000,000		245,000,000		275,000,000
Debt Instrument, Fair Value Disclosure	$ 241,900,000		$ 241,900,000		257,800,000
Debt Instrument, Interest Rate, Stated Percentage	9.25%		9.25%
Senior Subordinated Notes due March 2022 [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Long-term Debt, Gross	$ 350,000,000		$ 350,000,000
Debt Instrument, Fair Value Disclosure	$ 346,500,000		$ 346,500,000		348,300,000
Debt Instrument, Interest Rate, Stated Percentage	7.375%		7.375%
Senior Secured Credit Facility [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Debt Instrument, Fair Value Disclosure	$ 336,100,000		$ 336,100,000
Debt Instrument, Face Amount					$ 350,000,000
Long-term Debt, Fair Value	344,800,000		344,800,000
Tv One Llc [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Sales Commissions and Fees	$ 3,500,000	$ 3,200,000	$ 10,400,000	10,800,000
Reach Media Inc [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	80.00%		80.00%
Reach Media Inc [Member] | Fantastic Voyage [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Revenues			$ 9,400,000	9,400,000
Operating Income (Loss)	$ 1,500,000			1,700,000
Operating Expenses, Total			7,900,000	$ 7,700,000
Reach Media Inc [Member] | Maximum [Member] | Fantastic Voyage [Member]
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Operating Income (Loss)			$ 1,700,000