Non-controlling Interest - Net income reconciliation (Details) $ in Thousands		3 Months Ended
	Jul. 21, 2021 subsidiary	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021
Minority Interest [Line Items]
Income (loss) before provision for income taxes attributable to RE/MAX Holdings, Inc.		$ 2,485	$ 1,019
Income (loss) before provision for income taxes: Non-controlling interest		1,665	692
Income (loss) before provision for income taxes		4,150	1,711
(Provision)/benefit for income taxes attributable to RE/MAX Holdings, Inc.		(1,034)	144
(Provision)/benefit for income taxes: Non-controlling interest		(171)	(92)
(Provision)/benefit for income taxes		(1,205)	52
Net income (loss) attributable to RE/MAX Holdings, Inc.		1,451	1,163
Net income (loss): Non-controlling interest		1,494	600
Net income (loss)		$ 2,945	$ 1,763
RMCO, LLC
Minority Interest [Line Items]
Weighted average ownership percentage		100.00%		100.00%
Number of corporate subsidiaries owned | subsidiary	2
Non-controlling interests income tax percent	100.00%
RMCO, LLC | Weighted Average
Minority Interest [Line Items]
Weighted average ownership percentage attributable to RE/MAX Holdings, Inc.		60.10%	59.60%
Weighted average ownership percentage		100.00%	100.00%
RIHI | RMCO, LLC | Weighted Average
Minority Interest [Line Items]
Weighted average ownership percentage: Non-controlling interest		39.90%	40.40%