SUBSEQUENT EVENTS (Details) - USD ($) $ in Thousands		Apr. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	[2]
Subsequent Event [Line Items]
Face value of financing receivable	[1]		$ 2,603,343	$ 3,083,821
Subsequent Event | OBX 2021--J1 Trust | Consolidated VIEs
Subsequent Event [Line Items]
Face value of financing receivable		$ 353,800

[1] Includes $46.0 million and $47.0 million of residential mortgage loans held for sale at March 31, 2021 and December 31, 2020, respectively.

[2] Derived from the audited consolidated financial statements at December 31, 2020.