Summary of Significant Accounting Policies - Services Provided to Marketing Funds by REMAX Franchising (Details) - Marketing funds - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Costs charged	$ 5,189	$ 4,646	$ 11,585	$ 9,544
Technology - operating
Costs charged	3,519	3,233	7,743	6,833
Technology - capital
Costs charged	530	224	1,161	404
Marketing staff and administrative services
Costs charged	$ 1,140	$ 1,189	$ 2,681	$ 2,307