Non-controlling Interest - Net income reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Minority Interest [Line Items]
Income (loss) before provision for income taxes attributable to RE/MAX Holdings, Inc.	$ (168)	$ 2,485
Income (loss) before provision for income taxes: Non-controlling interest	(119)	1,665
Income (loss) before provision for income taxes	(287)	4,150
(Provision)/benefit for income taxes attributable to RE/MAX Holdings, Inc.	(503)	(1,034)
(Provision)/benefit for income taxes: Non-controlling interest	111	(171)
(Provision)/benefit for income taxes	(392)	(1,205)
Net income (loss) attributable to RE/MAX Holdings, Inc.	(671)	1,451
Net income (loss): Non-controlling interest	(8)	1,494
Net income (loss)	$ (679)	$ 2,945
RMCO, LLC
Minority Interest [Line Items]
Weighted average ownership percentage	100.00%		100.00%
RMCO, LLC | Weighted Average
Minority Interest [Line Items]
Weighted average ownership percentage attributable to RE/MAX Holdings, Inc.	58.80%	60.10%
Weighted average ownership percentage	100.00%	100.00%
RIHI | RMCO, LLC | Weighted Average
Minority Interest [Line Items]
Weighted average ownership percentage: Non-controlling interest	41.20%	39.90%