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Goodwill and Other Intangible Assets - Additional Information (Detail)
 3 Months Ended 12 Months Ended
Jul. 01, 2024
Segment
Mar. 31, 2024
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Oct. 01, 2024
USD ($)
Goodwill [Line Items]            
Aggregate amortization expense     $ 2,700,000 $ 3,100,000 $ 3,100,000  
Number of operating segments | Segment 2          
Goodwill allocated to discontinued operations     4,600,000      
Goodwill allocated from advertising technology and services     2,800,000      
Impairment of goodwill     43,322,000      
Goodwill     7,352,000 $ 50,674,000 47,194,000  
Meta            
Goodwill [Line Items]            
Impairment charges related to intangible subject to amortization   $ 14,000,000        
Revenue | Meta | Customer Concentration Risk            
Goodwill [Line Items]            
Concentration risk percentage       53.00%    
Digital            
Goodwill [Line Items]            
Impairment of goodwill       $ 0 0  
Impairment charges related to intangible subject to amortization       $ 1,000,000    
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]       Asset Impairment Charges    
Digital | Meta            
Goodwill [Line Items]            
Impairment of goodwill     35,400,000      
Television            
Goodwill [Line Items]            
Impairment of goodwill       $ 0 0  
Television | FCC Licenses            
Goodwill [Line Items]            
Impairment charge related to indefinite life intangible assets         $ 900,000  
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]         Asset Impairment Charges  
Media            
Goodwill [Line Items]            
Impairment of goodwill     43,322,000      
Goodwill     $ 0 43,322,000 $ 43,322,000 $ 43,300,000
Goodwill, impaired, method for fair value determination     As of the annual goodwill testing date, October 1, 2024, there was $43.3 million of goodwill in the media reporting unit. Based on the assumptions and estimates in Note 2, the media reporting unit carrying value exceeded its fair value, resulting in a goodwill impairment charge of $43.3 million for the year ended December 31, 2024. This impairment charge was a result of the Company updating its internal forecasts of future performance based on lower than anticipated political revenue in the fourth quarter of 2024 and higher projected future costs due to planned investments in news programming and the sales and marketing teams. The calculation of the fair value of the reporting unit requires estimates of the discount rate and the long term projected growth rate. If that discount rate were to increase by 0.5%, the fair value of the media reporting unit would decrease by 6%. If the long term projected growth rate were to decrease by 0.5%, the fair value of the media reporting unit would decrease by 3%      
Media | FCC Licenses            
Goodwill [Line Items]            
Impairment charge related to indefinite life intangible assets     $ 17,900,000      
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]     Asset Impairment Charges      
Advertising Technology And Services            
Goodwill [Line Items]            
Impairment of goodwill     $ 0      
Goodwill     $ 7,352,000 7,352,000 3,872,000 $ 7,400,000
Goodwill, impaired, method for fair value determination     As of the annual goodwill testing date, October 1, 2024, there was $7.4 million of goodwill in the advertising technology & services reporting unit. Based on the assumptions and estimates in Note 2, the fair value of the advertising technology & services reporting unit exceeded its carrying value by over 100%, resulting in no impairment charge for the year ended December 31, 2024. The calculation of the fair value of the advertising technology & services reporting unit requires estimates of the discount rate and the long term projected growth rate. If that discount rate were to increase by 0.5%, the fair value of the advertising technology & services reporting unit would decrease by 2%. If the long term projected growth rate were to decrease by 0.5%, the fair value of the advertising technology & services reporting unit would decrease by 1%.      
Percentage of fair value of assets     100.00%      
Audio            
Goodwill [Line Items]            
Impairment of goodwill       0 0  
Audio | FCC Licenses            
Goodwill [Line Items]            
Impairment charge related to indefinite life intangible assets       $ 12,300,000 $ 700,000  
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]       Asset Impairment Charges Asset Impairment Charges