Long-Term Debt - Schedule of Mandatory Principal Payments of Long-Term Debt (Details) $ in Thousands	Mar. 31, 2021 USD ($)
Debt Instrument [Line Items]
Remainder of 2021	$ 2,754
2022	3,672
2023	3,672
2024	66,409
2025	21,400
Total	97,907
SG Broadcasting
Debt Instrument [Line Items]
2025	21,400
Total	21,400
Emmis
Debt Instrument [Line Items]
2024	5,535
Total	5,535
Senior Credit Facility
Debt Instrument [Line Items]
Remainder of 2021	2,754
2022	3,672
2023	3,672
2024	60,874
Total	$ 70,972

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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-Topic 470
-SubTopic 20
-Section 50
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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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