Segment Reporting - Services Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Total services revenue	$ 20,146	$ 37,773	$ 76,775	$ 90,132
Title
Segment Reporting Information [Line Items]
Total services revenue	4,714	12,927	16,012	30,383
Valuation
Segment Reporting Information [Line Items]
Total services revenue	6,731	8,435	23,732	19,835
Single family rental
Segment Reporting Information [Line Items]
Total services revenue	5,430	8,539	20,887	17,610
Real estate owned asset management
Segment Reporting Information [Line Items]
Total services revenue	750	571	2,302	1,738
Other real estate services
Segment Reporting Information [Line Items]
Total services revenue	78	67	83	143
Asset management technology platform
Segment Reporting Information [Line Items]
Total services revenue	1,134	1,199	3,740	4,225
Other technology services
Segment Reporting Information [Line Items]
Total services revenue	905	981	2,957	2,964
Mortgage
Segment Reporting Information [Line Items]
Total services revenue	404	5,027	7,062	13,110
All Other
Segment Reporting Information [Line Items]
Total services revenue	$ 0	$ 27	$ 0	$ 124