Segment Reporting - Services Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Total services revenue	$ 29,348	$ 22,895
Title
Segment Reporting Information [Line Items]
Total services revenue	6,403	8,057
Valuation
Segment Reporting Information [Line Items]
Total services revenue	7,969	3,922
Single family rental
Segment Reporting Information [Line Items]
Total services revenue	7,230	3,449
REO asset management
Segment Reporting Information [Line Items]
Total services revenue	813	580
Other real estate services
Segment Reporting Information [Line Items]
Total services revenue	1	13
Asset management technology platform
Segment Reporting Information [Line Items]
Total services revenue	1,332	1,506
Other technology services
Segment Reporting Information [Line Items]
Total services revenue	1,048	964
Mortgage
Segment Reporting Information [Line Items]
Total services revenue	4,552	4,351
All Other
Segment Reporting Information [Line Items]
Total services revenue	$ 0	$ 53