Non-controlling Interest - Net income reconciliation (Details) $ in Thousands		3 Months Ended				6 Months Ended
	Jul. 21, 2021 subsidiary	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021
Minority Interest [Line Items]
Income (loss) before provision for income taxes attributable to RE/MAX Holdings, Inc.		$ 7,750		$ 6,609		$ 10,235	$ 7,628
Income (loss) before provision for income taxes: Non-controlling interest		5,126		4,465		6,791	5,157
Income (loss) before provision for income taxes		12,876		11,074		17,026	12,785
(Provision)/benefit for income taxes attributable to RE/MAX Holdings, Inc.		(1,921)		(1,348)		(2,955)	(1,204)
(Provision)/benefit for income taxes: Non-controlling interest		(680)		634		(851)	542
(Provision)/benefit for income taxes		(2,601)		(714)		(3,806)	(662)
Net income (loss) attributable to RE/MAX Holdings, Inc.		5,829		5,261		7,280	6,424
Net income (loss): Non-controlling interest		4,446		5,099		5,940	5,699
Net income (loss)		$ 10,275	$ 2,945	$ 10,360	$ 1,763	$ 13,220	$ 12,123
RMCO, LLC
Minority Interest [Line Items]
Weighted average ownership percentage		100.00%				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.		60.20%		59.80%		60.20%	59.70%
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		39.80%		40.20%		39.80%	40.30%