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, 2018	Mar. 31, 2017
Numerator
Net income attributable to RE/MAX Holdings, Inc.	$ 4,983	$ 4,540
Earnings per share of Class A common stock
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, basic		$ 0.26
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, diluted		$ 0.26
Common Class A
Denominator for basic net income per share of common stock
Weighted average shares of Class A common stock outstanding	17,709,095	17,662,842
Denominator for diluted net income per share of common stock
Weighted average shares of Class A common stock outstanding	17,709,095	17,662,842
Weighted average shares of Class A common stock outstanding, diluted	17,762,133	17,716,013
Earnings per share of Class A common stock
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, basic	$ 0.28	$ 0.26
Net income attributable to RE/MAX Holdings, Inc. per share of Class A common stock, diluted	$ 0.28	$ 0.26
Restricted Stock Units (RSUs) | Common Class A
Add dilutive effect of the following:
Dilutive effect	53,038	53,171