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		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Numerator
Net income attributable to RE/MAX Holdings, Inc.	$ 9,173	$ 8,139	$ 22,152	$ 20,770
Common Class A
Denominator for basic net income per share of Class A common stock
Weighted average shares of Class A common stock outstanding	17,826,332	17,746,184	17,803,708	17,733,910
Denominator for diluted net income per share of Class A common stock
Weighted average shares of Class A common stock outstanding	17,826,332	17,746,184	17,803,708	17,733,910
Add dilutive effect of the following:
Weighted average shares of Class A common stock outstanding, diluted	17,840,158	17,771,212	17,830,942	17,767,638
Earnings per share of Class A common stock
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, basic	$ 0.51	$ 0.46	$ 1.24	$ 1.17
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, diluted	$ 0.51	$ 0.46	$ 1.24	$ 1.17
Restricted Stock Units (RSUs) | Common Class A
Add dilutive effect of the following:
Restricted stock units	13,826	25,028	27,234	33,728