Non-controlling Interest - Net income reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Noncontrolling Interest
Weighted average ownership percentage of controlling interest	58.64%		58.56%		58.62%	58.53%
Weighted average ownership percentage of noncontrolling interest	41.36%		41.44%		41.38%	41.47%
Total (as a percentage)	100.00%		100.00%		100.00%	100.00%
Income before provision for income taxes attributable to RE/MAX Holdings, Inc.	$ 11,328		$ 10,367		$ 17,286	$ 16,820
Provision for income taxes attributable to RE/MAX Holdings, Inc.	(2,758)		(2,719)		(4,307)	(4,189)
Net income attributable to RE/MAX Holdings, Inc.	8,570		7,648		12,979	12,631
Income before provision for income taxes: Non-controlling interest	7,991		7,371		12,198	11,947
Provision for income taxes: Non-controlling interest	(428)		(428)		(787)	(820)
Net income: Non-controlling interest	7,563		6,943		11,411	11,127
Income before provision for income taxes	19,319		17,738		29,484	28,767
Provision for income taxes	(3,186)		(3,147)		(5,094)	(5,009)
Net income	$ 16,133	$ 8,257	$ 14,591	$ 9,167	$ 24,390	$ 23,758