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LOANS - Investment Loan Activity (Details) $ in Thousands | 9 Months Ended
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Sep. 30, 2022 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward] |  |
Beginning balance January 1, 2022 | $ 4,242,043 | [1],[2]
Ending balance September 30, 2022 | 1,551,707 | [2]
Transfer of residential loans to securitization vehicles, carrying value, noncash | 5,500,000 |
Total |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward] |  |
Beginning balance January 1, 2022 | 4,241,063 |
Purchases / originations | 5,193,659 |
Sales and transfers | (7,372,881) |
Principal payments | (317,519) |
Gains / (losses) | (189,431) |
(Amortization) / accretion | (3,254) |
Ending balance September 30, 2022 | 1,551,637 |
Residential |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward] |  |
Beginning balance January 1, 2022 | 2,272,072 |
Purchases / originations | 5,008,390 |
Sales and transfers | (5,470,437) |
Principal payments | (86,329) |
Gains / (losses) | (166,111) |
(Amortization) / accretion | (5,948) |
Ending balance September 30, 2022 | 1,551,637 |
Corporate Debt |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward] |  |
Beginning balance January 1, 2022 | 1,968,991 |
Purchases / originations | 185,269 |
Sales and transfers | (1,902,444) |
Principal payments | (231,190) |
Gains / (losses) | (23,320) |
(Amortization) / accretion | 2,694 |
Ending balance September 30, 2022 | $ 0 |
[1] | (1)Derived from the audited consolidated financial statements at December 31, 2021.
[2] | (4)Includes $1.4 million and $2.3 million of residential mortgage loans held for sale at September 30, 2022 and December 31, 2021, respectively.

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