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Investments in Equity Affiliates - Narrative (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 30, 2024 USD ($) | Sep. 30, 2024 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($) investment | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($)
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Income (loss) from equity affiliates |  | $ 3,177 |  |  | $ 809 | $ 7,388 | $ 20,694 |
Indirect ownership percentage |  |  |  |  |  | 12.30% |  | 12.30%
Payments to acquire interest in newly formed entity |  |  |  |  |  | $ 17,845 | 1,029 |
Bridge loans, total UPB |  |  |  |  |  | 629,255 |  | $ 427,929
Number of investments purchased | investment |  |  |  | 4 |  |  |  |
Loans to affiliates, balance |  | 14,888 |  |  |  | 14,888 |  |
Distributions from equity affiliates |  |  |  |  |  | 11,224 | 15,552 |
Interest income |  | 286,522 |  |  | 336,474 | 905,002 | 1,000,159 |
Bridge loans |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Bridge loans, total UPB | $ 100,300 |  |  |  |  |  |  |
Houston Properties |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Proceeds from sale of real estate | $ 101,300 |  |  |  |  |  |  |
Houston Properties | Bridge loans |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Variable rate, spread | 3.00% |  |  |  |  |  |  |
Capital Partner | AWC Real Estate Opportunity Partners I LP |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Subsidiary, non-controlling limited partnership interest |  |  | 51.00% |  |  |  |  |
General partnership, ownership interest |  |  | 17.50% |  |  |  |  |
Unconsolidated VIEs | Houston Properties | Bridge loans |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Short-term debt | $ 95,300 |  |  |  |  |  |  |
AWC Real Estate Opportunity Partners I LP |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Real estate investments, commitment, amount |  | 9,400 |  |  |  |  |  |
Arbor Residential Investor LLC |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Income (loss) from equity affiliates |  | (1,000) |  |  | (1,300) | (100) | 1,300 |
Distribution received |  |  |  |  | 7,500 | $ 7,700 | 15,000 |
Indirect ownership percentage |  |  |  |  |  | 9.20% |  | 9.20%
Loans to affiliates, balance |  | 0 |  |  |  | $ 0 |  |
AMAC Holdings III LLC |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Distribution received |  |  |  |  |  |  | 1,100 |
Noncontrolling interest |  |  |  |  |  | 2,600 |  |
Loss on investment |  | 500 |  |  | 700 | 1,700 | 1,600 |
Loans to affiliates, balance |  | 0 |  |  |  | 0 |  |
Fifth Wall Ventures |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Income (loss) from equity affiliates |  | (300) |  |  | (800) | 100 | (1,000) |
Noncontrolling interest |  | 100 |  |  |  | 800 | 800 |
Loans to affiliates, balance |  | 0 |  |  |  | 0 |  |
AWC Real Estate Opportunity Partners I LP |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Income (loss) from equity affiliates |  | (200) |  |  |  | (400) |  |
Noncontrolling interest |  | 5,100 |  |  |  | 13,600 |  |
Real estate investments, commitment, amount |  |  |  | $ 24,000 |  |  |  |
Real estate investments funded |  |  |  | $ 13,000 |  |  |  | $ 13,000
Percentage of interest in real estate fund |  |  |  | 0.990 |  |  |  |
Loan to affiliate |  |  |  | $ 900 |  |  |  |
General partnership interest |  |  |  | 0.010 |  |  |  |
Loan to affiliate, funded amount |  | $ 300 |  |  |  | $ 300 |  |
Ownership interest, percentage |  | 49.00% |  |  |  | 49.00% |  |
Payments for investments, legal, and administrative expenses |  |  |  | $ 14,300 |  |  |  |
Loans to affiliates, balance |  | $ 13,200 |  | 13,200 |  | $ 13,200 |  | 13,200
Distributions from equity affiliates |  | 11,200 |  |  |  |  |  |
Interest income |  | 2,400 |  |  |  | 9,000 |  |
AWC Real Estate Opportunity Partners I LP | Federal National Mortgage Association (FNMA) |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Loans to affiliates, balance |  |  |  | 13,000 |  |  |  | $ 13,000
AWC Real Estate Opportunity Partners I LP | AWC Real Estate Opportunity Partners I LP |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Ownership interest, percentage |  |  | 49.00% |  |  |  |  |
AWC Real Estate Opportunity Partners I LP | Capital Partner |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Real estate investments, commitment, amount |  |  | $ 25,000 |  |  |  |  |
Loan to affiliate, funded amount |  | $ 16,300 |  |  |  | $ 16,300 |  |
Newly Formed Entity | AWC Real Estate Opportunity Partners I LP |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Ownership interest, percentage |  |  | 42.00% |  |  |  |  |
Payments to acquire interest in newly formed entity |  |  | $ 6,300 |  |  |  |  |
North Vermont Avenue | Newly Formed Entity |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Equity method investment, amount sold |  |  |  | $ 1,300 |  |  |  |
The Park at Via Terrossa |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Ownership interest, percentage |  | 4.96% |  |  |  | 4.96% |  |
Loans to affiliates, balance |  | $ 0 |  |  |  | $ 0 |  |
The Park at Via Terrossa | Other Related Party Transactions |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Distribution from investment classified as return capital |  |  |  |  |  | 600 |  |
Lexford Portfolio |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Distribution received |  | 4,900 |  |  |  | 9,000 | 7,200 |
Loans to affiliates, balance |  | $ 0 |  |  |  | $ 0 |  |
Equity Participation Interest |  |  |  |  |  |  |  |
Investment in Equity Affiliates |  |  |  |  |  |  |  |
Proceeds from sale |  |  |  |  | $ 3,500 |  | $ 14,500 |

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