Quarterly report pursuant to Section 13 or 15(d)

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

v3.23.1
Revenue Recognition - Reconciliation of Revenue from Segments to Consolidated (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Disaggregation of Revenue [Line Items]    
Revenue, Net $ 63,489 $ 62,609
Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 48,340 48,432
Digital [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 10,510 10,300
Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 4,639 3,877
Broadcast Programming [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 19,543 19,232
Broadcast Programming [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 19,543 19,232
Broadcast Programming [Member] | Block Programming-National [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 13,526 13,059
Broadcast Programming [Member] | Block Programming-National [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 13,526 13,059
Broadcast Programming [Member] | Block Programming-Local [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 6,017 6,173
Broadcast Programming [Member] | Block Programming-Local [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 6,017 6,173
Broadcast Advertising Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 17,430 18,755
Broadcast Advertising Revenue [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 17,430 18,755
Broadcast Advertising Revenue [Member] | Spot Advertising-National [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 2,889 3,641
Broadcast Advertising Revenue [Member] | Spot Advertising-National [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 2,889 3,641
Broadcast Advertising Revenue [Member] | Spot Advertising-Local [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 9,427 10,283
Broadcast Advertising Revenue [Member] | Spot Advertising-Local [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 9,427 10,283
Broadcast Advertising Revenue [Member] | Network Advertising [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 5,114 4,831
Broadcast Advertising Revenue [Member] | Network Advertising [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 5,114 4,831
Other Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 2,178 2,239
Other Broadcast Revenue [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 2,178 2,239
Other Broadcast Revenue [Member] | Infomercials [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 183 191
Other Broadcast Revenue [Member] | Infomercials [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 183 191
Other Broadcast Revenue [Member] | Other Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 1,995 2,048
Other Broadcast Revenue [Member] | Other Revenue [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 1,995 2,048
Digital Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 19,699 18,506
Digital Revenue [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 9,189 8,206
Digital Revenue [Member] | Digital [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 10,510 10,300
Digital Revenue [Member] | Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 0 0
Digital Revenue [Member] | Digital Advertising [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 11,187 11,175
Digital Revenue [Member] | Digital Advertising [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 7,284 6,636
Digital Revenue [Member] | Digital Advertising [Member] | Digital [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 3,903 4,539
Digital Revenue [Member] | Digital Advertising [Member] | Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 0 0
Digital Revenue [Member] | Digital Streaming [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 2,380 2,091
Digital Revenue [Member] | Digital Streaming [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 1,519 1,190
Digital Revenue [Member] | Digital Streaming [Member] | Digital [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 861 901
Digital Revenue [Member] | Digital Streaming [Member] | Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 0  
Digital Revenue [Member] | Digital Downloads [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 1,766 1,707
Digital Revenue [Member] | Digital Downloads [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 25 43
Digital Revenue [Member] | Digital Downloads [Member] | Digital [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 1,741 1,664
Digital Revenue [Member] | Digital Downloads [Member] | Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 0  
Digital Revenue [Member] | Digital Subscriptions [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 4,196 3,409
Digital Revenue [Member] | Digital Subscriptions [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 213 257
Digital Revenue [Member] | Digital Subscriptions [Member] | Digital [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 3,983 3,152
Digital Revenue [Member] | Digital Subscriptions [Member] | Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 0  
Digital Revenue [Member] | Other Digital Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 170 124
Digital Revenue [Member] | Other Digital Revenue [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 148 80
Digital Revenue [Member] | Other Digital Revenue [Member] | Digital [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 22 44
Digital Revenue [Member] | Other Digital Revenue [Member] | Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 0  
Publishing Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 4,639 3,877
Publishing Revenue [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 0  
Publishing Revenue [Member] | Digital [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 0  
Publishing Revenue [Member] | Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 4,639 3,877
Publishing Revenue [Member] | Self-Publishing fees [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 1,846 1,727
Publishing Revenue [Member] | Self-Publishing fees [Member] | Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 1,846 1,727
Publishing Revenue [Member] | Book Sales [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 2,864 2,561
Publishing Revenue [Member] | Book Sales [Member] | Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 2,864 2,561
Publishing Revenue [Member] | Estimated Sales Returns And Allowances [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net (489) (835)
Publishing Revenue [Member] | Estimated Sales Returns And Allowances [Member] | Digital [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 0  
Publishing Revenue [Member] | Estimated Sales Returns And Allowances [Member] | Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net (489) (835)
Publishing Revenue [Member] | Net Book Sales [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 2,375 1,726
Publishing Revenue [Member] | Net Book Sales [Member] | Digital [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 0  
Publishing Revenue [Member] | Net Book Sales [Member] | Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 2,375 1,726
Publishing Revenue [Member] | EBook Sales [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 269 287
Publishing Revenue [Member] | EBook Sales [Member] | Digital [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 0  
Publishing Revenue [Member] | EBook Sales [Member] | Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 269 287
Publishing Revenue [Member] | Other Publishing Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 149 137
Publishing Revenue [Member] | Other Publishing Revenue [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 0  
Publishing Revenue [Member] | Other Publishing Revenue [Member] | Digital [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 0  
Publishing Revenue [Member] | Other Publishing Revenue [Member] | Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 149 137
Timing Of Revenue Recognition [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 455 605
Timing Of Revenue Recognition [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 455 605
Timing Of Revenue Recognition [Member] | Digital [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 0 0
Timing Of Revenue Recognition [Member] | Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 0 0
Timing Of Revenue Recognition [Member] | Transferred at Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 63,034 62,004
Timing Of Revenue Recognition [Member] | Transferred at Point in Time [Member] | Broadcast Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 47,885 47,827
Timing Of Revenue Recognition [Member] | Transferred at Point in Time [Member] | Digital [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net 10,510 10,300
Timing Of Revenue Recognition [Member] | Transferred at Point in Time [Member] | Publishing [Member]    
Disaggregation of Revenue [Line Items]    
Revenue, Net $ 4,639 $ 3,877