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SUBSEQUENT EVENTS (Details) - USD ($) $ in Thousands		Feb. 17, 2022	Jan. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Subsequent Event [Line Items]
Face value of financing receivable	[1]			$ 4,242,043	$ 3,083,821
Subsequent Event | Residential mortgage loans | Consolidated VIEs | OBX 2022-NQM1
Subsequent Event [Line Items]
Face value of financing receivable			$ 556,700
Subsequent Event | Residential mortgage loans | Consolidated VIEs | OBX 2022-INV1
Subsequent Event [Line Items]
Face value of financing receivable			$ 377,300
Subsequent Event | Residential mortgage loans | Consolidated VIEs | OBX 2022-INV2
Subsequent Event [Line Items]
Face value of financing receivable		$ 466,700
[1] (3) Includes $2.3 million and $47.0 million of residential mortgage loans held for sale at December 31, 2021 and 2020, respectively.

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- Definition

Amount excluding accrued interest, after allowance for credit loss, of financing receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

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- Definition

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