SERVICER ADVANCE INVESTMENTS - Schedule of Interest Income Related to Investments in Servicer Advances (Details) - Servicer Advance Investments - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Servicing Assets at Fair Value [Line Items]
Interest income, gross of amounts attributable to servicer compensation	$ 15,821	$ 12,501	$ 34,262
Amounts attributable to basic servicer compensation	(891)	(1,798)	(3,248)
Amounts attributable to incentive servicer compensation	27,075	(9,025)	(12,832)
Interest income from servicer advance investments	$ 42,005	$ 1,678	$ 18,182

Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.1-5)
-URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

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