Quarterly report pursuant to Section 13 or 15(d)

Recent Transactions - Divestitures - Additional Information (Detail)

v3.19.2
Recent Transactions - Divestitures - Additional Information (Detail) - USD ($)
1 Months Ended 6 Months Ended
Jun. 27, 2019
May 14, 2019
Mar. 21, 2019
Feb. 28, 2019
Feb. 27, 2019
Apr. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Mar. 19, 2019
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                  
Proceeds from sale of Other assets     $ 900,000            
Gain (loss) on disposition of other assets     $ 100,000            
Proceeds from sale of intangible assets             $ 2,872,000 $ 1,791,000  
Pre-tax Gain (Loss) on Sale of land $ 400,000                
Miami Florida [Member]                  
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                  
Proceeds from Sale of Land Held-for-use $ 900,000                
Time Brokerage Agreement [Member]                  
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                  
Payments to acquire businesses, gross           $ 1,200,000      
Fee for not exercising purchase option           $ 100,000      
HumanEvents.Com [Member]                  
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                  
Proceeds from sale of intangible assets         $ 300,000        
Gain (loss) on disposition of intangible assets         $ (200,000)        
Turner Investment Products [Member]                  
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                  
Proceeds from sale of intangible assets       $ 0          
Gain (loss) on disposition of intangible assets       $ (200,000)          
Wspz Am Tower Site [Member]                  
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                  
Business Combination, Consideration Transferred   $ 800,000              
Business Gross Estimated Gain Loss On Sale Assets                 $ 3,800,000
Business Combination Expected Additional Loss   $ 32,000