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Equity Investments, at Fair Value - Schedule of Income (Loss) From Investments (Details) - USD ($) | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Schedule of Equity Method Investments [Line Items] |  |
Unrealized gains (losses), net | $ 28,489,000 | $ (83,659,000)
Equity investments | Single-Family Equity Ownership Interests |  |
Schedule of Equity Method Investments [Line Items] |  |
Change in fair value, gain (loss) | (2,500,000) | 28,000
Equity investments | Joint venture equity investments in multi-family properties |  |
Schedule of Equity Method Investments [Line Items] |  |
Change in fair value, gain (loss) | 1,060,000 | 250,000
Constructive Loans, LLC | Equity investments | Single-Family Equity Ownership Interests |  |
Schedule of Equity Method Investments [Line Items] |  |
Change in fair value, gain (loss) | (2,500,000) | 0
Unrealized gains (losses), net | (3,200,000) | 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) | 0 | 28,000
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) | 413,000 | 100,000
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) | 647,000 | 150,000
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 gains (losses), net | $ 1,100,000 | $ 300,000

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- Definition For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123596393&loc=d3e14172-108612 + Details
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- Definition Amount of unrealized gain (loss) on investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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