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Line of credit additional borrowings.

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Line of credit facility minimum Liquidity amount.

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Line of credit facility minimum Liquidity amount thereafter.

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Line of credit facility minimum Liquidity amount year one.

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Line of credit facility minimum Liquidity amount year two.

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Minimum fixed charge coverage ratio.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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Amount of the fee that accompanies borrowing money under the debt instrument.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount, after accumulated amortization, of debt discount.

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Description of the frequency of the required periodic payments of interest, principal, or both, and the amount, if set, or a description of a formula upon which payment is based.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Long-Term Debt - Additional Information (Details)					6 Months Ended
Long-Term Debt - Additional Information (Details)	Mar. 27, 2020 USD ($)	Dec. 13, 2019 USD ($)	Dec. 09, 2019 USD ($)	Nov. 25, 2019 USD ($)	Jun. 30, 2020 USD ($)	Feb. 28, 2020 USD ($)	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Senior credit facility amount					$ 0
Credit facility, debt discount					$ 2,327,000		$ 2,437,000
Debt instrument interest percentage					6.00%
Debt instrument increasing interest rate of each successive anniversary					1.00%
Principal amount outstanding					$ 87,121,000
Emmis
Debt Instrument [Line Items]
Principal amount outstanding					5,000,000
SG Broadcasting
Debt Instrument [Line Items]
Principal amount outstanding					11,250,000
SG Broadcasting \| Promissory Note
Debt Instrument [Line Items]
Senior credit facility amount				$ 0
Debt instrument face amount				$ 6,300,000
Debt instrument interest percentage				6.00%
Debt instrument increasing interest rate of second anniversary				1.00%
Debt instrument increasing interest rate of each successive anniversary				1.00%
Debt instrument maturity date				May 25, 2025
Additional loan for working capital	$ 3,000,000					$ 2,000,000
Principal amount outstanding					11,300,000
SG Broadcasting \| Promissory Note \| Maximum
Debt Instrument [Line Items]
Debt instrument face amount	$ 20,000,000			$ 6,300,000		10,300,000
SG Broadcasting \| Convertible Promissory Note \| Emmis
Debt Instrument [Line Items]
Senior credit facility amount				0
Debt instrument face amount				$ 5,000,000
Debt instrument interest percentage				6.00%
Additional payment of interest in kind				1.00%
Debt instrument increasing interest rate of second anniversary				1.00%
Debt instrument increasing interest rate of each successive anniversary				1.00%
Debt instrument maturity date				Nov. 25, 2024
Senior Credit Facility
Debt Instrument [Line Items]
Principal amount outstanding					70,871,000
Senior Credit Facility \| SG Broadcasting
Debt Instrument [Line Items]
Credit facility, debt discount					$ 2,300,000
Percentage of fixed charge coverage ratio	1.00
Minimum liquidity amount	$ 1,000,000
Debt instrument, amount of amendment fee added to principal amount	200,000
Senior Credit Facility \| SG Broadcasting \| Promissory Note \| Maximum
Debt Instrument [Line Items]
Debt instrument face amount	$ 20,000,000					$ 10,300,000
Senior Credit Facility \| FMG Valdosta, LLC and FMG Kentucky, LLC \| SG Broadcasting
Debt Instrument [Line Items]
Net proceeds from senior credit facility			$ 22,600,000
Credit facility, debt discount			$ 800,000
GACP Finance Co., LLC \| Senior Credit Facility
Debt Instrument [Line Items]
Senior credit facility amount				$ 50,000,000
Debt instrument, term				5 years
Additional borrowing				$ 25,000,000
Credit facility, payment terms					The Senior Credit Facility requires interest payments on the first business day of each calendar month, and quarterly payments on the principal in an amount equal to one and one quarter percent of the initial aggregate principal amount are due on the last day of each calendar quarter.
Minimum liquidity amount, year one				2,000,000
Minimum liquidity amount, year two				2,500,000
Minimum liquidity amount, thereafter				$ 3,000,000
Percentage of fixed charge coverage ratio				1.10
GACP Finance Co., LLC \| Senior Credit Facility \| SG Broadcasting
Debt Instrument [Line Items]
Net proceeds from senior credit facility				$ 48,300,000
Credit facility, debt discount				$ 1,700,000
GACP Finance Co., LLC \| Senior Credit Facility \| FMG Valdosta, LLC and FMG Kentucky, LLC
Debt Instrument [Line Items]
Net proceeds from senior credit facility		$ 22,600,000
Credit facility, debt discount		800,000
Remaining available borrowings capacity		$ 23,400,000
LIBOR \| GACP Finance Co., LLC \| Senior Credit Facility
Debt Instrument [Line Items]
Interest rate of borrowing				7.50%
LIBOR Floor \| GACP Finance Co., LLC \| Senior Credit Facility
Debt Instrument [Line Items]
Interest rate of borrowing				2.00%