Segment Information - Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Segment Reporting Information
Total revenue	$ 68,510	$ 72,750	$ 138,738	$ 147,217
Real Estate
Segment Reporting Information
Total revenue	48,824	50,836	99,380	103,312
Mortgage
Segment Reporting Information
Total revenue	2,899	3,641	5,705	6,768
Marketing Funds
Segment Reporting Information
Total revenue	16,787	18,273	33,653	37,137
Operating Segments \| Real Estate
Segment Reporting Information
Total revenue	48,824	50,836	99,380	103,312
Operating Segments \| Mortgage
Segment Reporting Information
Total revenue	2,899	3,641	5,705	6,768
Operating Segments \| Marketing Funds
Segment Reporting Information
Total revenue	16,787	18,273	33,653	37,137
Continuing franchise fees
Segment Reporting Information
Total revenue	25,693	28,992	51,484	58,343
Continuing franchise fees \| Operating Segments \| Real Estate
Segment Reporting Information
Total revenue	23,816	26,484	47,505	53,310
Continuing franchise fees \| Operating Segments \| Mortgage
Segment Reporting Information
Total revenue	1,877	2,508	3,979	5,033
Annual dues
Segment Reporting Information
Total revenue	7,360	7,693	14,918	15,482
Annual dues \| Operating Segments \| Real Estate
Segment Reporting Information
Total revenue	7,360	7,693	14,918	15,482
Broker fees
Segment Reporting Information
Total revenue	14,118	13,454	26,729	24,885
Broker fees \| Operating Segments \| Real Estate
Segment Reporting Information
Total revenue	14,118	13,454	26,729	24,885
Franchise sales and other revenue
Segment Reporting Information
Total revenue	4,552	4,338	11,954	11,370
Franchise sales and other revenue \| Real Estate
Segment Reporting Information
Total revenue	3,530	3,205	10,228	9,635
Franchise sales and other revenue \| Operating Segments \| Real Estate
Segment Reporting Information
Total revenue	3,530	3,205	10,228	9,635
Franchise sales and other revenue \| Operating Segments \| Mortgage
Segment Reporting Information
Total revenue	$ 1,022	$ 1,133	$ 1,726	$ 1,735