Segment Information - Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information
Total revenue	$ 70,272	$ 71,178
RE/MAX Franchising
Segment Reporting Information
Total revenue	49,905	49,824
Motto Franchising
Segment Reporting Information
Total revenue	1,458	959
Marketing Funds fees
Segment Reporting Information
Total revenue	17,522	18,772
Other
Segment Reporting Information
Total revenue	1,387	1,623
Continuing franchise fees
Segment Reporting Information
Total revenue	24,143	24,956
Continuing franchise fees | RE/MAX Franchising
Segment Reporting Information
Total revenue	22,877	24,117
Continuing franchise fees | Motto Franchising
Segment Reporting Information
Total revenue	1,266	839
Annual dues
Segment Reporting Information
Total revenue	8,921	8,854
Annual dues | RE/MAX Franchising
Segment Reporting Information
Total revenue	8,921	8,854
Broker fees
Segment Reporting Information
Total revenue	9,444	8,588
Broker fees | RE/MAX Franchising
Segment Reporting Information
Total revenue	9,444	8,588
Franchise sales and other revenue
Segment Reporting Information
Total revenue	10,242	10,008
Franchise sales and other revenue | RE/MAX Franchising
Segment Reporting Information
Total revenue	8,663	8,265
Franchise sales and other revenue | Motto Franchising
Segment Reporting Information
Total revenue	$ 192	$ 120