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COMMITMENTS AND CONTINGENCIES - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022
Unfunded Loan Commitments |  |  |
Lease liabilities | $ 16,233 |  |
Operating lease, right-of-use asset | $ 15,500 |  |
Operating Lease, Liability, Statement of Financial Position [Extensible List] | Other liabilities |  |
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Other assets |  |
Operating expenses | $ 500 | $ 300 |
Treasury bills traded and not yet settled | 109,717 | $ 0 |
Provision for loan losses |  |  |
Unfunded Loan Commitments |  |  |
Unfunded commitments of mortgage loan receivables held for investment | $ 289,800 |  | $ 321,800
Length of additional mortgage loan financing | 3 years |  |
Unfunded commitments of mortgage loan receivables held for investment, additional funds | 54.00% |  |
U.S. Treasury Securities Traded, Not Yet Settled |  |  |
Unfunded Loan Commitments |  |  |
Treasury bills traded and not yet settled | $ 109,700 |  |

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