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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Numerator
Net income attributable to RE/MAX Holdings, Inc.	$ 3,553	$ 9,173	$ 9,673	$ 22,152
Earnings per share of Class A common stock
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, basic	$ 0.20	$ 0.51	$ 0.53	$ 1.24
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, diluted	$ 0.19	$ 0.51	$ 0.53	$ 1.24
RMCO, LLC
Numerator
Net income attributable to RE/MAX Holdings, Inc.	$ 3,553	$ 9,173	$ 9,673	$ 22,152
Common Class A
Denominator for basic net income per share of Class A common stock
Weighted average shares of Class A common stock outstanding	18,196,454	17,826,332	18,098,227	17,803,708
Denominator for diluted net income per share of Class A common stock
Weighted average shares of Class A common stock outstanding	18,196,454	17,826,332	18,098,227	17,803,708
Add dilutive effect of the following:
Weighted average shares of Class A common stock outstanding, diluted	18,368,051	17,840,158	18,182,856	17,830,942
Earnings per share of Class A common stock
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, basic	$ 0.20	$ 0.51	$ 0.53	$ 1.24
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, diluted	$ 0.19	$ 0.51	$ 0.53	$ 1.24
Restricted stock
Add dilutive effect of the following:
Restricted stock	171,597	13,826	84,629	27,234