Non-controlling Interest - Net income reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Minority Interest [Line Items]
Income (loss) before provision for income taxes attributable to RE/MAX Holdings, Inc.	$ 3,340		$ 7,750		$ 3,172	$ 10,235
Income (loss) before provision for income taxes: Non-controlling interest	2,326		5,126		2,207	6,791
Income (loss) before provision for income taxes	5,666		12,876		5,379	17,026
(Provision)/benefit for income taxes attributable to RE/MAX Holdings, Inc.	(1,330)		(1,921)		(1,833)	(2,955)
(Provision)/benefit for income taxes: Non-controlling interest	(1,092)		(680)		(981)	(851)
(Provision)/benefit for income taxes	(2,422)		(2,601)		(2,814)	(3,806)
Net income (loss) attributable to RE/MAX Holdings, Inc.	2,010		5,829		1,339	7,280
Net income (loss): Non-controlling interest	1,234		4,446		1,226	5,940
Net income (loss)	$ 3,244	$ (679)	$ 10,275	$ 2,945	$ 2,565	$ 13,220
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%		60.20%		58.90%	60.20%
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%		39.80%		41.10%	39.80%