SERVICER ADVANCE INVESTMENTS - Schedule of Servicer Advance Investments and Related Financing (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]
Principal and interest advances	$ 592,660	$ 616,801
Escrow advances (taxes and insurance advances)	1,283,083	1,442,697
Foreclosure advances	775,190	767,171
Total	2,650,933	2,826,669
Servicer advance investments
Schedule of Equity Method Investments [Line Items]
Principal and interest advances	54,452	57,909
Escrow advances (taxes and insurance advances)	145,846	149,346
Foreclosure advances	112,973	113,375
Total	$ 313,271	$ 320,630