Summary of Significant Accounting Policies - Services Provided to Marketing Funds by REMAX Franchising (Details) - Marketing funds - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Costs charged	$ 10,575	$ 20,952	$ 20,132
Technology - operating
Costs charged	4,676	14,436	13,396
Technology - capital
Costs charged	(203)	918	954
Technology - capital | Work in progress assets
Costs charged	200	500
Marketing staff and administrative services
Costs charged	$ 6,102	$ 5,598	$ 5,782