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Acquisitions and Dispositions - Additional Information (Details) - USD ($) $ in Thousands			1 Months Ended	12 Months Ended
	Jan. 01, 2020	Oct. 29, 2018	Jan. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jan. 09, 2019
Business Acquisition [Line Items]
Disposal Group, Including Discontinued Operation, Consideration		$ 9,300					$ 210
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net		566
Discontinued Operation, Disposal of Discontinued Operation, Transaction Costs		25
Consideration paid			$ 553
Assets acquired		$ 9,300		$ 200		$ 210
Ocala Broadcasting Corp [Member]
Business Acquisition [Line Items]
Proceeds from Divestiture of Businesses, Net of Cash Divested						$ 9,840
W295BL
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 200
Consideration paid				$ 190	$ 10