SERVICER ADVANCE INVESTMENTS - Summary of Investments in Servicer Advances - Components of Funded Advances (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Servicing Assets at Fair Value [Line Items]
Total	$ 398,820	$ 421,807
Servicer Advance Investments \| Servicer Advances
Servicing Assets at Fair Value [Line Items]
Principal and interest advances	66,892	67,014
Escrow advances (taxes and insurance advances)	155,438	174,681
Foreclosure advances	119,298	127,745
Total	$ 341,628	$ 369,440

Carrying value of servicer advance investments as of the balance sheet date. Servicer advances are generally reimbursable cash payments made by a servicer when the borrower fails to make scheduled payments due on a mortgage loan or when the servicer makes cash payments (i) on behalf of a borrower for real estate taxes and insurance premiums on the property that have not been paid on a timely basis by the borrower and (ii) to third parties for the costs and expenses incurred in connection with the foreclosure, preservation and sale of the mortgage property, including attorneys' and other professional fees.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant