Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Reconciliation of Revenue from Segments to Consolidated (Detail)

v3.21.2
Revenue Recognition - Reconciliation of Revenue from Segments to Consolidated (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Disaggregation of Revenue [Line Items]        
Revenue, Net $ 63,782 $ 52,871 $ 123,135 $ 111,121
Block Programming—National [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     23,322 23,804
Block Programming—Local [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     11,773 12,440
Spot Advertising—National [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     7,118 6,544
Spot Advertising—Local [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     19,441 19,145
Infomercials [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     462 536
Network [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     9,821 8,614
Digital Advertising [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     20,683 15,894
Digital Streaming [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     3,799 2,997
Digital Downloads and eBooks [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     4,165 3,551
Subscriptions [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     6,896 5,216
Book Sales and e-commerce, net of estimated sales returns and allowances [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     7,797 5,579
Self-Publishing fees [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     3,174 2,453
Advertising—Print [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     122 194
Other Revenue [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     4,562 4,154
Transferred at Point in Time [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     121,887 109,850
Rental Income [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     1,248 1,271
Broadcast [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     90,831 84,650
Broadcast [Member] | Block Programming—National [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     23,322 23,804
Broadcast [Member] | Block Programming—Local [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     11,773 12,440
Broadcast [Member] | Spot Advertising—National [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     7,118 6,544
Broadcast [Member] | Spot Advertising—Local [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     19,441 19,145
Broadcast [Member] | Infomercials [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     462 536
Broadcast [Member] | Network [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     9,821 8,614
Broadcast [Member] | Digital Advertising [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     11,745 6,483
Broadcast [Member] | Digital Streaming [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     2,093 1,229
Broadcast [Member] | Digital Downloads and eBooks [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     200  
Broadcast [Member] | Subscriptions [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     562 573
Broadcast [Member] | Book Sales and e-commerce, net of estimated sales returns and allowances [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     197 1,663
Broadcast [Member] | Advertising—Print [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net       1
Broadcast [Member] | Other Revenue [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     4,097 3,618
Broadcast [Member] | Transferred at Point in Time [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     89,583 83,379
Broadcast [Member] | Rental Income [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     1,248 1,271
Digital [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     19,958 18,547
Digital [Member] | Digital Advertising [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     8,806 9,260
Digital [Member] | Digital Streaming [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     1,706 1,768
Digital [Member] | Digital Downloads and eBooks [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     3,173 3,047
Digital [Member] | Subscriptions [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     6,072 4,292
Digital [Member] | Book Sales and e-commerce, net of estimated sales returns and allowances [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     98 55
Digital [Member] | Other Revenue [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     103 125
Digital [Member] | Transferred at Point in Time [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     19,958 18,547
Publishing [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     12,346 7,924
Publishing [Member] | Digital Advertising [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     132 151
Publishing [Member] | Digital Downloads and eBooks [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     792 504
Publishing [Member] | Subscriptions [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     262 351
Publishing [Member] | Book Sales and e-commerce, net of estimated sales returns and allowances [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     7,502 3,861
Publishing [Member] | Self-Publishing fees [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     3,174 2,453
Publishing [Member] | Advertising—Print [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     122 193
Publishing [Member] | Other Revenue [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     362 411
Publishing [Member] | Transferred at Point in Time [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net     $ 12,346 $ 7,924