Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Reconciliation of Revenue from Segments to Consolidated (Detail)

v3.19.1
Summary of Significant Accounting Policies - Reconciliation of Revenue from Segments to Consolidated (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Disaggregation of Revenue [Line Items]    
Revenue, Net $ 262,783 $ 263,736
Block Programming National [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 49,864  
Block Programming Local [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 33,274  
Spot Advertising - National [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 16,333  
Spot Advertising - Local [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 55,863  
Infomercials [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 1,824  
Network [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 19,293  
Digital Advertising [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 29,996  
Digital Streaming [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 5,099  
Digital Downloads and eBooks [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 6,835  
Subscriptions [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 10,168  
Book Sales and e-commerce [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 14,298  
Self-Publishing fees [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 5,609  
Advertising Print [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 616  
Other Revenues [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 13,711  
Transferred at Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 260,327  
Rental Income [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 2,456  
Broadcast [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 198,502  
Broadcast [Member] | Block Programming National [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 49,864  
Broadcast [Member] | Block Programming Local [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 33,274  
Broadcast [Member] | Spot Advertising - National [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 16,333  
Broadcast [Member] | Spot Advertising - Local [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 55,863  
Broadcast [Member] | Infomercials [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 1,824  
Broadcast [Member] | Network [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 19,293  
Broadcast [Member] | Digital Advertising [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 7,172  
Broadcast [Member] | Digital Streaming [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 752  
Broadcast [Member] | Subscriptions [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 1,056  
Broadcast [Member] | Book Sales and e-commerce [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 483  
Broadcast [Member] | Advertising Print [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 42  
Broadcast [Member] | Other Revenues [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 12,546  
Broadcast [Member] | Transferred at Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 196,187  
Broadcast [Member] | Rental Income [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 2,315  
Digital Media [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 42,595  
Digital Media [Member] | Digital Advertising [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 22,351  
Digital Media [Member] | Digital Streaming [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 4,347  
Digital Media [Member] | Digital Downloads and eBooks [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 5,354  
Digital Media [Member] | Subscriptions [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 8,205  
Digital Media [Member] | Book Sales and e-commerce [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 1,949  
Digital Media [Member] | Other Revenues [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 389  
Digital Media [Member] | Transferred at Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 42,500  
Digital Media [Member] | Rental Income [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 95  
Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 21,686  
Publishing [Member] | Digital Advertising [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 473  
Publishing [Member] | Digital Downloads and eBooks [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 1,481  
Publishing [Member] | Subscriptions [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 907  
Publishing [Member] | Book Sales and e-commerce [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 11,866  
Publishing [Member] | Self-Publishing fees [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 5,609  
Publishing [Member] | Advertising Print [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 574  
Publishing [Member] | Other Revenues [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 776  
Publishing [Member] | Transferred at Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 21,640  
Publishing [Member] | Rental Income [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net $ 46