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
	Mar. 31, 2021	Mar. 31, 2020
Numerator
Net income attributable to RE/MAX Holdings, Inc.	$ 1,092	$ 2,631
RMCO, LLC
Numerator
Net income attributable to RE/MAX Holdings, Inc.	$ 1,092	$ 2,631
Common Class A
Denominator for basic net income per share of Class A common stock
Weighted average shares of Class A common stock outstanding	18,496,532	17,974,264
Denominator for diluted net income per share of Class A common stock
Weighted average shares of Class A common stock outstanding	18,496,532	17,974,264
Add dilutive effect of the following:
Weighted average shares of Class A common stock outstanding, diluted	18,866,727	18,033,631
Earnings per share of Class A common stock
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, basic	$ 0.06	$ 0.15
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, diluted	$ 0.06	$ 0.15
Restricted stock
Add dilutive effect of the following:
Restricted stock	370,195	59,367