Non-controlling Interest - Net income reconciliation (Details) $ in Thousands		3 Months Ended						9 Months Ended
	Jul. 21, 2021 subsidiary	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2021
Minority Interest [Line Items]
Income (loss) before provision for income taxes attributable to RE/MAX Holdings, Inc.		$ (219)			$ (24,836)			$ 10,016	$ (17,208)
Income (loss) before provision for income taxes: Non-controlling interest		(138)			(16,735)			6,653	(11,578)
Income (loss) before provision for income taxes		(357)			(41,571)			16,669	(28,786)
(Provision)/benefit for income taxes attributable to RE/MAX Holdings, Inc.		359			(313)			(2,596)	(1,517)
(Provision)/benefit for income taxes: Non-controlling interest		(912)			(479)			(1,763)	63
(Provision)/benefit for income taxes		(553)			(792)			(4,359)	(1,454)
Net income (loss) attributable to RE/MAX Holdings, Inc.		140			(25,149)			7,420	(18,725)
Net income (loss): Non-controlling interest		(1,050)			(17,214)			4,890	(11,515)
Net income (loss)		$ (910)	$ 10,275	$ 2,945	$ (42,363)	$ 10,360	$ 1,763	$ 12,310	$ (30,240)
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.		59.80%			59.80%			60.00%	59.80%
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		40.20%			40.20%			40.00%	40.20%