SERVICER ADVANCE INVESTMENTS - Schedule of Interest Income Related to Investments in Servicer Advances (Details) - Servicer Advance Investments - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Schedule of Equity Method Investments [Line Items]
Interest income, gross of amounts attributable to servicer compensation	$ 5,320	$ (1,426)	$ 26,664	$ 16,079
Amounts attributable to base servicer compensation	(367)	897	(2,673)	(849)
Amounts attributable to incentive servicer compensation	(4,436)	892	(16,620)	(8,144)
Interest income (expense) from servicer advance investments	$ 517	$ 363	$ 7,371	$ 7,086