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Acquisitions and Dispositions - Additional Information (Details) - USD ($) |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
May 09, 2017 | Jan. 31, 2019 | Oct. 29, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Jan. 09, 2019 | Sep. 02, 2017
Business Acquisition [Line Items] |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets |  |  | $ 9,300,000 | $ 210,000 | $ 9,961,000 |  |
Disposal Group, Including Discontinued Operation, Consideration | $ 23,000,000 |  | 9,300,000 |  |  | $ 210,000 |
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net | 3,400,000 |  | 566,000 |  |  |  | $ 1,300,000
Discontinued Operation, Disposal of Discontinued Operation, Transaction Costs | $ 500,000 |  | $ 25,000 | $ 50,000 |  |  |
Payments to Acquire Businesses, Gross |  | $ 553,000 |  |  |  |  |
Ocala Broadcasting Corp [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Proceeds from Divestiture of Businesses, Net of Cash Divested |  |  |  |  | $ 9,840,000 |  |

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