SERVICER ADVANCE INVESTMENTS - Summary of Investments in Servicer Advances - Components of Funded Advances (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Servicing Assets at Fair Value [Line Items]
Total	$ 302,278	$ 339,646
Servicer Advance Investments | Servicer advance investments
Servicing Assets at Fair Value [Line Items]
Principal and interest advances	40,712	51,135
Escrow advances (taxes and insurance advances)	118,558	137,072
Foreclosure advances	105,651	110,738
Total	$ 264,921	$ 298,945