Non-controlling Interest - Net income reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Minority Interest [Line Items]
Income (loss) before provision for income taxes attributable to RE/MAX Holdings, Inc.	$ (6,866)			$ (219)			$ (3,694)	$ 10,016
Income (loss) before provision for income taxes: Non-controlling interest	(22,126)			(138)			(19,919)	6,653
Income (loss) before provision for income taxes	(28,992)			(357)			(23,613)	16,669
(Provision)/benefit for income taxes attributable to RE/MAX Holdings, Inc.	(52,588)			359			(54,421)	(2,596)
(Provision)/benefit for income taxes: Non-controlling interest	(1,092)			(912)			(2,073)	(1,763)
(Provision)/benefit for income taxes	(53,680)			(553)			(56,494)	(4,359)
Net income (loss) attributable to RE/MAX Holdings, Inc.	(59,454)			140			(58,115)	7,420
Net income (loss): Non-controlling interest	(23,218)			(1,050)			(21,992)	4,890
Net income (loss)	$ (82,672)	$ 3,244	$ (679)	$ (910)	$ 10,275	$ 2,945	$ (80,107)	$ 12,310
RMCO, LLC
Minority Interest [Line Items]
Weighted average ownership percentage	100.00%						100.00%		100.00%
RMCO, LLC | Weighted Average
Minority Interest [Line Items]
Weighted average ownership percentage attributable to RE/MAX Holdings, Inc.	59.10%			59.80%			59.00%	60.00%
Weighted average ownership percentage	100.00%			100.00%			100.00%	100.00%
RIHI | RMCO, LLC | Weighted Average
Minority Interest [Line Items]
Weighted average ownership percentage: Non-controlling interest	40.90%			40.20%			41.00%	40.00%