Non-controlling Interest - Net income reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Minority Interest [Line Items]
Income (loss) before provision for income taxes attributable to RE/MAX Holdings, Inc.	$ 11,090	$ (13,424)	$ 17,588
Income (loss) before provision for income taxes: Non-controlling interest	7,038	(8,737)	12,120
Income (loss) before provision for income taxes	18,128	(22,161)	29,708
(Provision)/benefit for income taxes attributable to RE/MAX Holdings, Inc.	(4,980)	(2,192)	(6,338)
(Provision)/benefit for income taxes: Non-controlling interest	(2,391)	(267)	(2,824)
(Provision)/benefit for income taxes	(7,371)	(2,459)	(9,162)
Net income (loss) attributable to RE/MAX Holdings, Inc.	6,110	(15,616)	11,250
Net income (loss): Non-controlling interest	4,647	(9,004)	9,296
Net income (loss)	$ 10,757	$ (24,620)	$ 20,546
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.	59.80%	59.80%	59.10%
Weighted average ownership percentage	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%	40.90%