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Stock-Based Payment Arrangements - Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Stock-Based Payment Arrangements
Total Stock-Based Compensation	$ 49,617	$ 19,912	$ 88,422	$ 50,414
RE/MAX Holdings, Inc
Stock-Based Payment Arrangements
Total Stock-Based Compensation	27,200		27,200
Stock-based compensation related to acceleration of certain equity awards following termination of certain employees	26,400		26,400
Employee Stock Option
Stock-Based Payment Arrangements
Total Stock-Based Compensation	(33)	233	235	823
Restricted Stock Units (RSUs)
Stock-Based Payment Arrangements
Total Stock-Based Compensation	49,650	19,679	88,187	49,591
Location, Statement of Income, Balance [Axis]: us-gaap:CostOfRevenue \| Agent
Stock-Based Payment Arrangements
Total Stock-Based Compensation	13,842	12,555	37,907	32,757
Location, Statement of Income, Balance [Axis]: us-gaap:CostOfRevenue \| Restricted Stock Units (RSUs) \| Agent
Stock-Based Payment Arrangements
Total Stock-Based Compensation	13,842	12,555	37,907	32,757
Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense \| FTE
Stock-Based Payment Arrangements
Total Stock-Based Compensation	29,727	3,040	34,587	6,059
Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense \| Employee Stock Option \| FTE
Stock-Based Payment Arrangements
Total Stock-Based Compensation	13	178	199	640
Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense \| Restricted Stock Units (RSUs) \| FTE
Stock-Based Payment Arrangements
Total Stock-Based Compensation	29,714	2,862	34,388	5,419
Location, Statement of Income, Balance [Axis]: us-gaap:MarketingExpense \| FTE
Stock-Based Payment Arrangements
Total Stock-Based Compensation	42	43	91	126
Location, Statement of Income, Balance [Axis]: us-gaap:MarketingExpense \| Agent
Stock-Based Payment Arrangements
Total Stock-Based Compensation	5,594	3,935	14,677	10,528
Location, Statement of Income, Balance [Axis]: us-gaap:MarketingExpense \| Employee Stock Option \| Agent
Stock-Based Payment Arrangements
Total Stock-Based Compensation	(28)	55	54	180
Location, Statement of Income, Balance [Axis]: us-gaap:MarketingExpense \| Restricted Stock Units (RSUs) \| FTE
Stock-Based Payment Arrangements
Total Stock-Based Compensation	42	43	91	126
Location, Statement of Income, Balance [Axis]: us-gaap:MarketingExpense \| Restricted Stock Units (RSUs) \| Agent
Stock-Based Payment Arrangements
Total Stock-Based Compensation	5,622	3,880	14,623	10,348
Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense \| FTE
Stock-Based Payment Arrangements
Total Stock-Based Compensation	412	339	1,160	944
Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense \| Employee Stock Option \| FTE
Stock-Based Payment Arrangements
Total Stock-Based Compensation	(18)		(18)	3
Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense \| Restricted Stock Units (RSUs) \| FTE
Stock-Based Payment Arrangements
Total Stock-Based Compensation	$ 430	$ 339	$ 1,178	$ 941