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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 |  |

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