SERVICER ADVANCE INVESTMENTS - Summary of Investments in Servicer Advances - Components of Funded Advances (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Servicing Assets at Fair Value [Line Items]
Total	$ 376,881	$ 398,820
Servicer Advance Investments | Servicer advance investments
Servicing Assets at Fair Value [Line Items]
Principal and interest advances	57,909	66,892
Escrow advances (taxes and insurance advances)	149,346	155,438
Foreclosure advances	113,375	119,298
Total	$ 320,630	$ 341,628