Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Significant Accounting Policies - Reconciliation of Revenue from Segments to Consolidated (Detail)

v3.10.0.1
Basis of Presentation and Significant Accounting Policies - Reconciliation of Revenue from Segments to Consolidated (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Disaggregation of Revenue [Line Items]        
Revenue, Net $ 65,528 $ 65,433 $ 195,595 $ 196,525
Block Programming National [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     37,318  
Block Programming Local [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     24,643  
Spot Advertising - National [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     12,126  
Spot Advertising - Local [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     41,224  
Infomercials [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     1,464  
Network [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     14,501  
Digital Advertising [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     21,269  
Digital Streaming [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     3,900  
Digital Downloads and eBooks [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     4,877  
Subscriptions [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     7,540  
Book Sales and e-commerce [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     11,566  
Self-Publishing fees [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     4,231  
Advertising Print [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     490  
Other Revenues [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     10,446  
Transferred at Point in Time [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     193,934  
Rental Income [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     1,661  
Broadcast [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     147,425  
Broadcast [Member] | Block Programming National [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     37,318  
Broadcast [Member] | Block Programming Local [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     24,643  
Broadcast [Member] | Spot Advertising - National [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     12,126  
Broadcast [Member] | Spot Advertising - Local [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     41,224  
Broadcast [Member] | Infomercials [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     1,464  
Broadcast [Member] | Network [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     14,501  
Broadcast [Member] | Digital Advertising [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     4,764  
Broadcast [Member] | Digital Streaming [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     584  
Broadcast [Member] | Subscriptions [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     789  
Broadcast [Member] | Book Sales and e-commerce [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     360  
Broadcast [Member] | Advertising Print [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     36  
Broadcast [Member] | Other Revenues [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     9,616  
Broadcast [Member] | Transferred at Point in Time [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     145,892  
Broadcast [Member] | Rental Income [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     1,533  
Digital Media [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     31,051  
Digital Media [Member] | Digital Advertising [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     16,159  
Digital Media [Member] | Digital Streaming [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     3,316  
Digital Media [Member] | Digital Downloads and eBooks [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     3,722  
Digital Media [Member] | Subscriptions [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     6,052  
Digital Media [Member] | Book Sales and e-commerce [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     1,533  
Digital Media [Member] | Other Revenues [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     269  
Digital Media [Member] | Transferred at Point in Time [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     30,969  
Digital Media [Member] | Rental Income [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     82  
Publishing [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     17,119  
Publishing [Member] | Digital Advertising [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     346  
Publishing [Member] | Digital Downloads and eBooks [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     1,155  
Publishing [Member] | Subscriptions [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     699  
Publishing [Member] | Book Sales and e-commerce [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     9,673  
Publishing [Member] | Self-Publishing fees [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     4,231  
Publishing [Member] | Advertising Print [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     454  
Publishing [Member] | Other Revenues [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     561  
Publishing [Member] | Transferred at Point in Time [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     17,073  
Publishing [Member] | Rental Income [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     $ 46