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Acquisitions and Dispositions - Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Jan. 31, 2019
Dec. 31, 2018
Jun. 30, 2019
Jan. 09, 2019
Oct. 29, 2018
Business Acquisition [Line Items]          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets   $ 9,961 $ 210    
Disposal Group, Including Discontinued Operation, Consideration       $ 210 $ 9,300
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net   566      
Discontinued Operation, Disposal of Discontinued Operation, Transaction Costs   25      
Payments to Acquire Businesses, Gross $ 553        
Ocala Broadcasting Corp [Member]          
Business Acquisition [Line Items]          
Proceeds from Divestiture of Businesses, Net of Cash Divested   $ 9,840