Segment Reporting - Services Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Total services revenue	$ 10,984	$ 29,348
Title
Segment Reporting Information [Line Items]
Total services revenue	2,554	6,403
Valuation
Segment Reporting Information [Line Items]
Total services revenue	2,881	7,969
Single family rental
Segment Reporting Information [Line Items]
Total services revenue	2,435	7,230
Real estate owned asset management
Segment Reporting Information [Line Items]
Total services revenue	912	813
Other real estate services
Segment Reporting Information [Line Items]
Total services revenue	1	1
Asset management technology platform
Segment Reporting Information [Line Items]
Total services revenue	1,166	1,332
Other technology services
Segment Reporting Information [Line Items]
Total services revenue	699	1,048
Mortgage
Segment Reporting Information [Line Items]
Total services revenue	$ 336	$ 4,552