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Segment Data - Additional Information (Detail)		12 Months Ended
	Jul. 01, 2024 Segment	Dec. 31, 2024 Station	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]		srt:ChiefExecutiveOfficerMember
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description		As a result of the sale of the Company's EGP business, effective July 1, 2024, the Company has realigned its operating segments into two segments – media and advertising technology & services – consistent with the Company's current operational and management structure, as well as the basis that is now used for internal management reporting and how the Company's CEO evaluates the business. The Company's reportable segments are the same as its operating segments. Prior periods have been recast to conform to this presentation.
Number of operating segments | Segment	2
Percentage of revenue generated from outside the United States		25.00%	27.00%	24.00%
Television
Segment Reporting Information [Line Items]
Number of stations owned		49
Radio
Segment Reporting Information [Line Items]
Number of stations owned		44

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Number of stations owned.

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Percentage of revenue generated from foreign countries.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Indicates title and position of individual or name of group identified as chief operating decision maker (CODM) for segment reporting.

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Description of how chief operating decision maker (CODM) uses reported segment profit (loss) measure to assess performance and allocate resource.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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