Earnings Per Share and Dividends - Reconciliation of the numerator and denominator used in basic and diluted EPS calculations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Numerator
Net income attributable to RE/MAX Holdings, Inc.	$ 8,570	$ 7,648	$ 12,979	$ 12,631
Common Class A
Denominator for basic net income per share of Class A common stock
Weighted average shares of Class A common stock outstanding	17,808,321	17,746,042	17,791,942	17,727,671
Denominator for diluted net income per share of Class A common stock
Weighted average shares of Class A common stock outstanding	17,808,321	17,746,042	17,791,942	17,727,671
Add dilutive effect of the following:
Weighted average shares of Class A common stock outstanding, diluted	17,833,958	17,769,641	17,825,880	17,763,592
Earnings per share of Class A common stock
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, basic	$ 0.48	$ 0.43	$ 0.73	$ 0.71
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, diluted	$ 0.48	$ 0.43	$ 0.73	$ 0.71
Restricted Stock Units (RSUs) | Common Class A
Add dilutive effect of the following:
Restricted stock units	25,637	23,599	33,938	35,921