Goodwill and Other Intangible Assets - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2023 USD ($) Segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Oct. 01, 2023 USD ($)
Goodwill [Line Items]
Aggregate amortization expense	$ 12,600,000	$ 10,700,000	$ 8,900,000
Number of reporting segments | Segment	3
Goodwill	$ 90,672,000	$ 86,991,000	71,708,000
Revenue | Meta | Customer Concentration Risk
Goodwill [Line Items]
Concentration risk percentage	53.00%	49.00%
Digital
Goodwill [Line Items]
Impairment of goodwill	$ 0
Goodwill	$ 50,123,000	$ 46,442,000	31,159,000	$ 50,100,000
Goodwill, impaired, method for fair value determination	The Company conducted its annual review of the fair value of the digital reporting unit. As of the annual goodwill testing date, October 1, 2023, there was $50.1 million of goodwill in the digital reporting unit. Based on the assumptions and estimates in Note 2, the fair value of the digital reporting unit exceeded its carrying value by 28%, resulting in no impairment charge for the year ended December 31, 2023. The calculation of the fair value of the digital 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 digital reporting unit would decrease by 2%. If the long term projected growth rate were to decrease by 1%, the fair value of the digital reporting unit would decrease by 1%.
Percentage of fair value of assets	28.00%
Impairment charges related to intangible subject to amortization	$ 1,000,000		$ 1,300,000
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]	Asset Impairment Charges		Asset Impairment Charges
Digital | Revenue | Meta | Customer Concentration Risk
Goodwill [Line Items]
Concentration risk percentage	63.00%	63.00%
Television
Goodwill [Line Items]
Impairment of goodwill	$ 0
Goodwill	$ 40,549,000	$ 40,549,000	$ 40,549,000	$ 40,500,000
Goodwill, impaired, method for fair value determination	the television reporting unit fair value exceeded its carrying value by 36%, resulting in no impairment charge for the year ended December 31, 2023. 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 television reporting unit would decrease by 2%. If the long term projected growth rate were to decrease by 0.5%, the fair value of the television reporting unit would decrease by 2%.During the years ended December 31, 2022 and 2021, the Company concluded that the television reporting unit fair value exceeded its carrying value, resulting in no impairment charge.
Percentage of fair value of assets	36.00%
Impairment charges related to intangible subject to amortization			$ 300,000
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]			Asset Impairment Charges
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
Audio
Goodwill [Line Items]
Goodwill	$ 0	$ 0	$ 0
Impairment charges related to intangible subject to amortization			$ 1,300,000
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]			Asset Impairment Charges
Audio | FCC Licenses
Goodwill [Line Items]
Impairment charge related to indefinite life intangible assets	$ 12,300,000	$ 700,000	$ 100,000
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]	Asset Impairment Charges	Asset Impairment Charges	Asset Impairment Charges