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, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Numerator
Net income attributable to RE/MAX Holdings, Inc.	$ 3,489	$ 8,570	$ 6,120	$ 12,979
Earnings per share of Class A common stock
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, basic	$ 0.19	$ 0.48	$ 0.34	$ 0.73
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, diluted	$ 0.19	$ 0.48	$ 0.34	$ 0.73
RMCO, LLC
Numerator
Net income attributable to RE/MAX Holdings, Inc.	$ 3,489	$ 8,570	$ 6,120	$ 12,979
Common Class A
Denominator for basic net income per share of Class A common stock
Weighted average shares of Class A common stock outstanding	18,123,963	17,808,321	18,049,114	17,791,942
Denominator for diluted net income per share of Class A common stock
Weighted average shares of Class A common stock outstanding	18,123,963	17,808,321	18,049,114	17,791,942
Add dilutive effect of the following:
Weighted average shares of Class A common stock outstanding, diluted	18,146,886	17,833,958	18,090,259	17,825,880
Earnings per share of Class A common stock
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, basic	$ 0.19	$ 0.48	$ 0.34	$ 0.73
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, diluted	$ 0.19	$ 0.48	$ 0.34	$ 0.73
Employee Stock Option | Common Class A
Denominator for basic net income per share of Class A common stock
Weighted average shares of Class A common stock outstanding	18,123,963	17,808,321	18,049,114	17,791,942
Denominator for diluted net income per share of Class A common stock
Weighted average shares of Class A common stock outstanding	18,123,963	17,808,321	18,049,114	17,791,942
Restricted Stock Units (RSUs)
Add dilutive effect of the following:
Restricted stock units	22,923	25,637	41,145	33,938
Restricted Stock Units (RSUs) | Common Class A
Add dilutive effect of the following:
Weighted average shares of Class A common stock outstanding, diluted	18,146,886	17,833,958	18,090,259	17,825,880