Acquisitions (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	6 Months Ended
	Feb. 26, 2018	Jun. 30, 2018	Jun. 30, 2018	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Purchase Price Allocation
Goodwill				$ 150,812		$ 150,684
Pro Forma Information
Total revenue		$ 73,055	$ 145,432
Net income attributable to RE/MAX Holdings, Inc.		$ 7,648	$ 11,640
Basic earnings per common share		$ 0.43	$ 0.66
Diluted earnings per common share		$ 0.43	$ 0.66
Booj Llc
Business Acquisition [Line Items]
Cash consideration	$ 26,300
Issuance of Class A common stock, equity-based compensation plans, value	10,000
Purchase Price Allocation
Cash	362
Other current assets	367
Property and equipment	625
Software	7,400
Trademarks	500
Non-compete agreement	1,200
Customer relationships	800
Other intangible assets	1,589
Other assets, net of current portion	336
Total assets acquired, excluding goodwill	13,179
Current portion of debt	(606)
Other current liabilities	557
Debt, net of current portion	(805)
Total liabilities assumed	1,968
Goodwill	15,039
Total purchase price	$ 26,250
Marketing funds
Purchase Price Allocation
Restricted cash					$ 28,495
Other current assets					8,472
Property and equipment					788
Other assets, net of current portion					126
Total assets acquired					37,881
Other current liabilities					37,881
Total liabilities assumed					$ 37,881