Segments - Schedule of Financial Information for the Company's Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Segment Reporting [Line Items]
Total revenue	$ 365,223	$ 340,879	$ 702,459	$ 617,541
Segment Adjusted EBITDA	173,544	169,535	334,217	307,691
Franchise
Segment Reporting [Line Items]
Total revenue	135,778	119,658	270,245	234,838
Segment Adjusted EBITDA	91,737	86,502	186,458	171,367
Corporate-owned clubs
Segment Reporting [Line Items]
Total revenue	143,862	138,989	284,484	272,658
Segment Adjusted EBITDA	57,481	56,598	103,966	102,447
Equipment
Segment Reporting [Line Items]
Total revenue	85,583	82,232	147,730	110,045
Segment Adjusted EBITDA	$ 24,326	$ 26,435	$ 43,793	$ 33,877

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

- Definition

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