Revenues - Disaggregated Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation Of Revenue [Line Items]
Total Revenue	$ 119,943	$ 62,968	$ 223,830	$ 121,627
Marketing Advertising Services And Sponsorship [Member]
Disaggregation Of Revenue [Line Items]
Total Revenue	87,134	36,335	159,417	69,816
Intelligence Subscription Services [Member]
Disaggregation Of Revenue [Line Items]
Total Revenue	19,682	19,178	38,528	37,870
Advisory Services [Member]
Disaggregation Of Revenue [Line Items]
Total Revenue	13,114	7,376	25,660	13,704
Exhibitor And Attendee [Member]
Disaggregation Of Revenue [Line Items]
Total Revenue	$ 13	$ 79	$ 225	$ 237

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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+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details