Annual report pursuant to Section 13 and 15(d)

Subsequent Events - Additional Information (Detail)

v3.19.1
Subsequent Events - Additional Information (Detail) - USD ($)
1 Months Ended 12 Months Ended
Mar. 07, 2019
Mar. 01, 2019
Feb. 27, 2019
Feb. 22, 2019
May 30, 2017
Feb. 28, 2019
May 24, 2018
Dec. 31, 2018
Dec. 31, 2017
Subsequent Event [Line Items]                  
Business combination, consideration transferred               $ 11,180,000 $ 4,043,000
Gain (loss) on disposition of intangible assets             $ (200,000)    
Proceeds from sale of intangible assets               $ 9,894,000 $ 2,456,000
Gain (loss) on disposition of intangible assets         $ 56,000        
Proceeds from sale of intangible assets         $ 10,000        
Subsequent Event [Member]                  
Subsequent Event [Line Items]                  
Common stock, equity distributions, per share, declared $ 0.0650                
Subsequent Event [Member] | pjmedia.com website [Member]                  
Subsequent Event [Line Items]                  
Business combination, consideration transferred   $ 100,000              
Turner Investment Products [Member] | Subsequent Event [Member]                  
Subsequent Event [Line Items]                  
Gain (loss) on disposition of intangible assets           $ (200,000)      
Proceeds from sale of intangible assets           $ 0      
HumanEvents.Com [Member] | Subsequent Event [Member]                  
Subsequent Event [Line Items]                  
Gain (loss) on disposition of intangible assets     $ (200,000)            
Proceeds from sale of intangible assets       $ 300,000