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SALE OF COMMERCIAL REAL ESTATE BUSINESS - Carrying Value of Assets and Liabilities of CRE Business (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020 | [2]
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Disposal Group, Including Discontinued Operations, Assets [Abstract] |  |  |
Total assets of disposal group held for sale | [1] | $ 4,400,723 | $ 0
Disposal Group, Including Discontinued Operation, Liabilities [Abstract] |  |  |
Total liabilities of disposal group held for sale |  | 3,319,414 | $ 0
CRE Business | Discontinued Operations, Disposed of by Sale |  |  |
Disposal Group, Including Discontinued Operations, Assets [Abstract] |  |  |
Cash and cash equivalents |  | 8,944 |
Securities |  | 78,341 |
Loans, net |  | 522,126 |
Assets transferred or pledged to securitization vehicles |  | 3,123,451 |
Real estate, net |  | 617,216 |
Intangible assets, net |  | 16,503 |
Other assets |  | 34,142 |
Total assets of disposal group held for sale |  | 4,400,723 |
Disposal Group, Including Discontinued Operation, Liabilities [Abstract] |  |  |
Repurchase agreements |  | 292,168 |
Debt issued by securitization vehicles |  | 2,542,556 |
Mortgages payable |  | 426,064 |
Interest payable |  | 1,167 |
Other liabilities |  | 57,459 |
Total liabilities of disposal group held for sale |  | $ 3,319,414 |
[1] | Excludes $401.1 million at March 31, 2021 of commercial mortgage-backed securities in consolidated VIEs pledged as collateral and eliminated from the Company’s Consolidated Statements of Financial Condition.
[2] | Derived from the audited consolidated financial statements at December 31, 2020.

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