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Equity Investments, at Fair Value - Schedule of Income (Loss) From Investments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Schedule of Equity Method Investments [Line Items] |  |  |  |
Unrealized (losses) gains, net | $ (67,694) | $ 23,854 | $ (151,353) | $ 50,020
Equity investments | Single-Family Equity Ownership Interests |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Change in fair value, gain (loss) | 1,772 | 4,271 | 1,800 | 2,171
Equity investments | Joint venture equity investments in multi-family properties |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Change in fair value, gain (loss) | 299 | 0 | 549 | 0
Morrocroft Neighborhood Stabilization Fund II, LP | Equity investments | Single-Family Equity Ownership Interests |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Change in fair value, gain (loss) | 22 | 998 | 50 | 2,186
Constructive Loans, LLC | Equity investments | Single-Family Equity Ownership Interests |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Change in fair value, gain (loss) | 1,750 | 0 | 1,750 | 0
Unrealized (losses) gains, net | 1,800 |  | 1,800 |
Headlands Asset Management Fund III (Cayman), LP (Headlands Flagship Opportunity Fund Series I) | Equity investments | Single-Family Equity Ownership Interests |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Change in fair value, gain (loss) | 0 | 3,273 | 0 | (15)
Headlands Asset Management Fund III (Cayman), LP (Headlands Flagship Opportunity Fund Series I) | Equity investments | Joint venture equity investments in multi-family properties |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Unrealized (losses) gains, net | 300 |  | 500 |
GWR Cedars Partners, LLC | Equity investments | Joint venture equity investments in multi-family properties |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Change in fair value, gain (loss) | 111 | 0 | 211 | 0
GWR Gateway Partners, LLC | Equity investments | Joint venture equity investments in multi-family properties |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Change in fair value, gain (loss) | $ 188 | $ 0 | $ 338 | $ 0

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