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SUBSEQUENT EVENTS (Details) - USD ($) $ in Thousands | Feb. 28, 2023 | Jan. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Subsequent Event [Line Items] |  |  |  |  |
Face value of financing receivable | [1] |  |  | $ 1,809,832 | $ 4,242,043
Mortgage Servicing Rights Committed Credit Facility | Line of Credit |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  |  | $ 500,000 |
Subsequent Event | Mortgage Servicing Rights Committed Credit Facility | Line of Credit |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Credit facility, maximum borrowing capacity, increase |  |  | $ 200,000 |  |
Subsequent Event | Mortgage Servicing Rights Incremental Facility | Line of Credit |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Credit facility, maximum borrowing capacity |  | $ 250,000 |  |  |
Residential mortgage loans | Consolidated VIEs | OBX 2022-NQM1 | Subsequent Event |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Face value of financing receivable |  |  | $ 405,200 |  |
[1] | (3) Includes $1.3 million and $2.3 million of residential mortgage loans held for sale at December 31, 2022 and 2021, respectively.

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