SERVICER ADVANCE INVESTMENTS - Summary of Investments in Servicer Advances - Components of Funded Advances (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Total	$ 385,927	$ 398,820
Servicer advance investments | Servicer Advances
Schedule of Equity Method Investments [Line Items]
Principal and interest advances	60,545	66,892
Escrow advances (taxes and insurance advances)	146,201	155,438
Foreclosure advances	120,828	119,298
Total	$ 327,574	$ 341,628