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Commitments and Contingencies (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Schedule of Equity Method Investments [Line Items] |  |
Total damages including punitive | $ 70,000 |
Damages sought by plaintiff | 700,000 |
Unfunded loan commitments | 1,952,887 | $ 1,095,598
Commercial Mortgage and Subordinated Portfolio Segment |  |
Schedule of Equity Method Investments [Line Items] |  |
Unfunded loan commitments | $ 2,000,000 |

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