Goodwill and intangible assets - Schedule of Changes in the Carrying Amount of Goodwill (Details) $ in Thousands |
6 Months Ended |
|---|---|
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Jun. 30, 2026
USD ($)
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| Goodwill [Roll Forward] | |
| Goodwill at December 31, 2025 | $ 712,450 |
| Acquisitions | 0 |
| Sale of corporate-owned clubs | 0 |
| Foreign currency translation | (119) |
| Goodwill at June 30, 2026 | 712,331 |
| Franchise | |
| Goodwill [Roll Forward] | |
| Goodwill at December 31, 2025 | 16,938 |
| Acquisitions | 0 |
| Sale of corporate-owned clubs | 0 |
| Foreign currency translation | 0 |
| Goodwill at June 30, 2026 | 16,938 |
| Corporate-owned Clubs | |
| Goodwill [Roll Forward] | |
| Goodwill at December 31, 2025 | 602,846 |
| Acquisitions | 0 |
| Sale of corporate-owned clubs | 0 |
| Foreign currency translation | (119) |
| Goodwill at June 30, 2026 | 602,727 |
| Equipment | |
| Goodwill [Roll Forward] | |
| Goodwill at December 31, 2025 | 92,666 |
| Acquisitions | 0 |
| Sale of corporate-owned clubs | 0 |
| Foreign currency translation | 0 |
| Goodwill at June 30, 2026 | $ 92,666 |
| X | ||||||||||
- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) asset representing future economic benefit from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of decrease in goodwill acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized, from divestiture. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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